Materials Science › Materials Chemistry

Corrosion Behavior of Nickel-Aluminium Bronze Alloys

Works Count: 42545

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Description

This cluster of papers focuses on the corrosion behavior, microstructure, cavitation erosion, and tribocorrosion of nickel-aluminium bronze alloys. It also explores the effects of surface modification, friction stir processing, and the machinability of lead-free brass alloys.

Keywords

Nickel-Aluminium Bronze; Corrosion; Microstructure; Cavitation Erosion; Friction Stir Processing; Machinability; Lead-Free Brass; Surface Modification; Tribocorrosion; Wear Behavior

A revolution in manufacturing : the SMED system

1985-01-01

重夫新郷

Publisher's Preface Foreword Introduction PART ONE: THEORY AND PRACTICE OF THE SMED SYSTEM 1. The Structure of Production 2. Setup Operations in the Past 3. Fundamentals of SMED 4. Techniques … Publisher's Preface Foreword Introduction PART ONE: THEORY AND PRACTICE OF THE SMED SYSTEM 1. The Structure of Production 2. Setup Operations in the Past 3. Fundamentals of SMED 4. Techniques for Applying SMED 5. Applying SMED to Internal Operations 6. Basic Examples of SMED 7. Effects of SMED PART TWO: THE SMED SYSTEM -- CASE STUDIES 8. Implementing SMED Matsushita Electric Industrial Co., Ltd., Washing Machine Division (Mikuni Plant) 9. Setup Improvements Based on the Toyota Production System Toyoda Gosei Co., Ltd. 10. A Quick-Setting (Q-S) Campaign Nippon Kogaku K.K. (Oi Plant) 11. Using SMED on a Farm Machinery Processing Line Kubota, Ltd. (Sakai Plant) 12. Setup Improvements Based on Shop Circle Activities Toyota Auto Body Co., Ltd. 13. Comprehensive Development of the SMED Concept to Include Affiliated Plants Arakawa Auto Body Industries K.K. 14. SMED Developments in Producing Slide Bearings T.H. Kogyo K.K. 15. Examples and Effects of the SMED System Glory Industries K.K. 16. Achievement of SMED Through Company-Wide Activities Kyoei Kogyo K.K. 17. SMED in Tire Manufacturing Processes Bridgestone Tire Co., Ltd. 18. Using SMED for Aluminum Die-Casting Dies Tsuta Machine and Metals Co., Ltd. 19. The Shingo One-Touch Die Exchange System: The Boltless Method Postscript About the Author Index

The biology of Tribolium, with special emphasis on genetic aspects.

1972-01-01

A. Sokoloff

Equine Nutrition and Feeding

2004-08-06

David L. Frape

Equine nutrition and feeding , Equine nutrition and feeding , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی Equine nutrition and feeding , Equine nutrition and feeding , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی

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Nickel and Chromium Plating

1986-01-01

J. K. Dennis , T. E. Such

Segregation of Solute Atoms to Stacking Faults

1962-02-01

Hideji Suzuki

An experimental evidence was given for the segregation of solute atoms to stacking faults in alpha-brass. The stacking fault energy in an alpha-phase solid solution with face-centered cubic structure usually … An experimental evidence was given for the segregation of solute atoms to stacking faults in alpha-brass. The stacking fault energy in an alpha-phase solid solution with face-centered cubic structure usually decreases continuously with the increasing concentration of solute atoms. The solute atoms in that alloy tend to segregate to the stacking faults due to chemical interaction. A simple calculation indicates that the solute atoms segregate to such a high concentration as the stacking fault energy becomes a negative value with considerable magnitude, provided that the concentration of solute atoms is in thermal equilibrium at rather low temperature. The width of an extended dislocation should increase indefinitely if the stacking fault energy becomes lower than a negative value. Alpha-brass with 30% zinc, which was annealed at 120°C and 150°C for a week and two days, respectively, after cold-work reveals extended dislocations with extremely wide stacking faults of the order of several microns. Meanwhile, the width of a dislocation in alpha-brass is usually less than 100Å without low temperature annealing.

Interstitial Diffusion of Copper and Silver in Lead

1966-05-01

B. F. Dyson , T. Anthony , David Turnbull

The diffusivities D of copper and silver in high-purity lead have been measured by a radioactive tracer technique. They are described by DCu/Pb = 7.9×10−3e−(8020/RT) cm2 sec−1, DAg/Pb = 4.6×10−2e−(14 … The diffusivities D of copper and silver in high-purity lead have been measured by a radioactive tracer technique. They are described by DCu/Pb = 7.9×10−3e−(8020/RT) cm2 sec−1, DAg/Pb = 4.6×10−2e−(14 440/RT) cm2 sec−1. These results, in combination with those of Seith and Keil and Ascoli et al., show that the rates of diffusion of the noble metals in lead are several orders of magnitude greater than the self-diffusion rate of lead DPb. We have found that DPb is not measurably affected by the dissolution of either gold, in agreement with Seith and Keil, or of copper. The results indicate that neither the vacancy, interstitialcy, nor exchange mechanisms are predominant in the diffusion of these solutes. It is concluded that the noble metals are dissolved in lead at least partially in the interstitial state and that they diffuse almost wholly by an interstitial mechanism.

Stacking faults in cold worked alpha-brass

1955-09-01

Β. E. Warren , E. P. Warekois

The role of microstructure of nickel–aluminium–bronze alloy on its cavitation corrosion behavior in natural seawater

2002-02-01

Abdulhameed Al-Hashem , W.T. Riad

Microstructural modification of as-cast NiAl bronze by friction stir processing

2004-09-01

Keiichiro Oh‐ishi , Terry R. McNelley

The influence of nickel–aluminium bronze microstructure and crevice solution on the initiation of crevice corrosion

2007-12-04

J.A. Wharton , K.R. Stokes

Wear resistance and microstructure of Zn-Al-Si and Zn-Al-Cu alloys

1987-06-01

Pekwah Pearl Lee , Temel Savaşkan , Emmanuel Laufer

The corrosion of nickel-aluminium bronzes in seawater—I. Protective layer formation and the passivation mechanism

1993-11-01

Andreas Schüßler , Hans Eckart Exner

Erosion and erosion–corrosion performance of cast and thermally sprayed nickel–aluminium bronze

2005-05-11

Rakesh Chandra Barik , J.A. Wharton , R.J.K. Wood +2 more

The corrosion of nickel–aluminium bronze in seawater

2005-09-27

J.A. Wharton , Rakesh Chandra Barik , G. Kear +3 more

Unstable Dislocations in Anisotropic Crystals

1967-01-01

A. K. Head

Abstract In an elastically anisotropic crystal, the energy of a dislocation depends on the crystallographic direction of the dislocation line. A straight dislocation which is in a high energy direction … Abstract In an elastically anisotropic crystal, the energy of a dislocation depends on the crystallographic direction of the dislocation line. A straight dislocation which is in a high energy direction may be unstable with its energy decreasing if it changes to a zig‐zag shape. The relation between two different criteria of instability is clarified. The theory is used to examine seven possible slip systems in three metals. Instabilities are predicted for six systems in β‐brass, two in iron, and none in niobium. Tables are given of the predicted instabilities for the 〈110〉 {111} f.c.c. system and the 〈111〉 {110} b.c.c. system for a range of elastic constants. A preliminary report is given of the observation of this phenomenon in β‐brass.

Intergranular cavitation in stressed metals

1954-03-01

John Greenwood , David R. Miller , J. Suiter

Solid State Diffusion

1977-08-01

J. P. Stark , Steven J. Rothman

Further Studies on the Leakage Between Resin Material and Gold Alloy in Resin Faced Gold Cups

1963-01-01

Bo Bergman , B Hedegård , Rune Söremark

Stress corrosion in brass considered against the background of potential/pH diagrams

1961-01-01

Einar Mattsson

Microstructural development in complex nickel-aluminum bronzes

1983-10-01

A. Jahanafrooz , F. Hasan , G. W. Lorimer +1 more

Microstructural characterization of cast nickel aluminium bronze

1978-08-01

Emrullah Culpan , G. R. F. Rose

The morphology, crystallography, and chemistry of phases in as-cast nickel-aluminum bronze

1982-08-01

F. Hasan , A. Jahanafrooz , G. W. Lorimer +1 more

Long-Range Order in Beta-Brass and Cu3Au

1951-03-01

D. T. Keating , Β. E. Warren

Measurements have been made on single crystals of CuZn and Cu3Au held at various temperatures below Tc to decide whether there is a single-ordered phase whose order changes with temperature, … Measurements have been made on single crystals of CuZn and Cu3Au held at various temperatures below Tc to decide whether there is a single-ordered phase whose order changes with temperature, or whether there is an ordered and a disordered phase the relative amounts changing with temperature. Precision measurements were made of the position and width of the (222) CuZn and (400) Cu3Au reflections. The disordered phase has a larger cell dimension, so that reflections from the ordered and disordered phases are slightly displaced from one another. For both materials, a single peak was observed which was too narrow to correspond to the existence of two phases. At the stoichiometric compositions, it is concluded that below Tc there is only an ordered phase whose long-range order varies with temperature. Measurements of the long-range order in Cu3Au have been made on briquets of filings, using quenched samples, and on a sample held at temperature.

Corrosion properties of friction–stir processed cast NiAl bronze

2010-02-17

D.R. Ni , B.L. Xiao , Z.Y. Ma +2 more

Fabricating Superior NiAl Bronze Components through Wire Arc Additive Manufacturing

2016-08-03

Donghong Ding , Zengxi Pan , Stephen van Duin +2 more

Cast nickel aluminum bronze (NAB) alloy is widely used for large engineering components in marine applications due to its excellent mechanical properties and corrosion resistance. Casting porosity, as well as … Cast nickel aluminum bronze (NAB) alloy is widely used for large engineering components in marine applications due to its excellent mechanical properties and corrosion resistance. Casting porosity, as well as coarse microstructure, however, are accompanied by a decrease in mechanical properties of cast NAB components. Although heat treatment, friction stir processing, and fusion welding were implemented to eliminate porosity, improve mechanical properties, and refine the microstructure of as-cast metal, their applications are limited to either surface modification or component repair. Instead of traditional casting techniques, this study focuses on developing NAB components using recently expanded wire arc additive manufacturing (WAAM). Consumable welding wire is melted and deposited layer-by-layer on substrates producing near-net shaped NAB components. Additively-manufactured NAB components without post-processing are fully dense, and exhibit fine microstructure, as well as comparable mechanical properties, to as-cast NAB alloy. The effects of heat input from the welding process and post-weld-heat-treatment (PWHT) are shown to give uniform NAB alloys with superior mechanical properties revealing potential marine applications of the WAAM technique in NAB production.

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Marine wear and tribocorrosion

2017-04-01

R.J.K. Wood

The role of nickel in mechanical performance and corrosion behaviour of nickel-aluminium bronze in 3.5 wt.% NaCl solution

2018-05-21

Fenfen Yang , Huijun Kang , Enyu Guo +4 more

Corrosion Resistance of Zinc and Zinc Alloys

1994-06-29

F. C. Porter

Cohesion in Metals, Transition Metal alloys, F.R.de Boer,R.Boom,W.C.M.Mattens,A.R.Miedema,A.K.Niessen(共著), F.R de boer,D.G.pettifor編Cohesion and Structure Vol.1, 1989年, North-Holland発行, 23×15.5cm, 758ページ, Dfl.250

1990-11-15

潮美菊池

The Ecology of the Wash. III. Density-Related Behaviour and the Possible Effects of a Loss of Feeding Grounds on Wading Birds (Charadrii)

1977-12-01

J. D. Goss‐Custard

ASM specialty handbook: nickel, cobalt, and their alloys

2001-07-01

ASM specialty handbook: nickel, cobalt, and their alloys , ASM specialty handbook: nickel, cobalt, and their alloys , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی ASM specialty handbook: nickel, cobalt, and their alloys , ASM specialty handbook: nickel, cobalt, and their alloys , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی

The Chemistry of Ruthenium

1984-01-01

Elaine A. Seddon , Kenneth R. Seddon

Metallurgical Transactions A

1985-11-01

Patrick Brennet , 甲一新井

Heavy metals removal by chemical coagulation and precipitation

1999-05-01

Lertchai Charerntanyarak

Synthetic wastewater of pH 1.9, consisted of Zn, Cd, Mn and Mg at concentrations of 450, 150, 1,085 and 3,154 mg/l respectively. It was found that the optimum pH for … Synthetic wastewater of pH 1.9, consisted of Zn, Cd, Mn and Mg at concentrations of 450, 150, 1,085 and 3,154 mg/l respectively. It was found that the optimum pH for chemical coagulation and precipitation by lime treatment was more than 9.5, which could decrease the concentration of heavy metals pertinent to the Wastewater Standard of the Ministry of Industry. Moreover, if 0.5 mg/l of polymer was added, it could decrease the concentration of heavy metals further. In addition when sodium sulphide solution was used in secondary treatment, it was also found that the optimum pH by lime in primary treatent was more than 9.5 and the optimum concentration of sodium sulphide was more than 250 mg/l.

Nickel and Chromium Plating

1993-01-01

J. K. Dennis , T. E. Such

Copper and Copper Alloys

2001-12-01

Abstract This article discusses the composition, properties, and behaviors of copper and its alloys. It begins with an overview of the characteristics, applications, and commercial grades of wrought and cast … Abstract This article discusses the composition, properties, and behaviors of copper and its alloys. It begins with an overview of the characteristics, applications, and commercial grades of wrought and cast copper. It then discusses the role of alloying, explaining how zinc, tin, aluminum, silicon, and nickel affect the physical and mechanical properties of coppers and high-copper alloys as well as brasses, bronzes, copper-nickels, and nickel silvers. It also explains how alloying affects electrical conductivity, corrosion resistance, stress-corrosion cracking, and processing characteristics.

Environmental fate and effects of pulp and paper mill effluents

1996-07-01

Autecology of the copperhead

1960-01-01

Henry S. Fitch

Kupfer und Kupferlegierungen in der Technik

1967-01-01

Kurt Dies

Nickel, cobalt, and their alloys

2000-01-01

Joseph R. Davis

This book is a comprehensive guide to the compositions, properties, processing, performance and applications of nickel, cobalt, and their alloys. It includes all of the essential information contained in the … This book is a comprehensive guide to the compositions, properties, processing, performance and applications of nickel, cobalt, and their alloys. It includes all of the essential information contained in the 20-volume ASM Handbook series. Includes new or updated coverage in the following areas: Expanded corrosion coverage including guidelines for selecting the best alloy for specific environments or applications Data sheets covering the compositions, specifications, applications and properties for dozens of the most commercially important heat, corrosion and wear-resistant nickel and cobalt alloys Recent advances in superalloy development, including coatings to extend high-temperature service life Unique characteristics of nickel and cobalt which allow them to be used in special-purpose applications, e.g., magnets, controlled-expansion devices, electronics, and implants for the human body Engineering applications for nickel and cobalt coatings produced by electroplating, electroforming, electroless coating, thermal spraying, and weld surfacing. Contents include: Nickel and Its Alloys: The Nickel Industry, occurrence, recovery and consumption Uses of nickel Wrought and Cast Corrosion-Resistant Alloys Cast Heat-Resistant Ni-Cr and Ni-Cr-Fe alloys Superalloys Special-Purpose Alloys Nickel Coatings Corrosion Behavior, including performance in specific environments, Stress-Corrosion Cracking and Hydrogen Embrittlement, and High-Temperature Corrosion Fabrication and Finishing, including forming, forging, powder metallurgy, heat treating, machining, welding and brazing, cleaning and finishing, and high-temperature coatings for superalloys Metallography, Microstructures, and Phase Diagrams Cobalt and Its Alloys: The Cobalt Industry, occurrence, recovery and consumption Uses of cobalt Cobalt-base alloys Wear behavior Corrosion Behavior Fabrication Characteristics Metallography, Microstructures and Phase Diagrams.

Induction of Embryonic Primordia by Implantation of Organizers from a Different Species

2024-06-01

Hans Spemann , Hilde Mangold

Effect of heat treatment on microstructure evolution and erosion–corrosion behavior of a nickel–aluminum bronze alloy in chloride solution

2015-06-01

Zhong Wu , Y. Frank Cheng , Lei Liu +2 more

Study on Introduction of CO2 Free Energy to Japan with Liquid Hydrogen

2015-01-01

Shoji Kamiya , Motohiko Nishimura , E. Harada

In Japan, both CO2(Carbon dioxide) emission reduction and energy security are the very important social issues after Fukushima Daiichi accident. On the other hand, FCV (Fuel Cell Vehicle)using hydrogen will … In Japan, both CO2(Carbon dioxide) emission reduction and energy security are the very important social issues after Fukushima Daiichi accident. On the other hand, FCV (Fuel Cell Vehicle)using hydrogen will be on the market in 2015. Introducing large mass hydrogen energy is being expected as expanding hydrogen applications, or solution to energy issues of Japan.And then,the Japanese government announced the road map for introducing hydrogen energy supply chain in this June,2014. Under these circumstances, imported CO2 free hydrogen will be one of the solutions for energy security and CO2 reduction, if the hydrogen price is affordable. To achieve this, Kawasaki Heavy Industries, Ltd. (KHI) performed a feasibility studyon CO2-free hydrogen energy supply chainfrom Australian brown coal linked with CCS (Carbon dioxide Capture and Storage) to Japan. In the study, hydrogen production systems utilizing brown coal gasificationandLH2 (liquid hydrogen)systems as storing and transporting hydrogen are examined.This paper shows the possibilityof realizingthe CO2 free hydrogen supply chain, the cost breakdown of imported hydrogen cost, its cost competitiveness with conventionalfossil, andLH2systems as key technologies of the hydrogen energy chain.

Gigantische Stahlbleche im Walzwerk konservieren

2025-06-26

| JOT Journal für Oberflächentechnik

Jernverkets havn

2025-06-25

Håkon Haugland , Kristoffer Vadum | Heimen

Optimal Planning for Municipal Solid Waste Utilization

2025-06-24

José María Ponce‐Ortega , Rogelio Ochoa-Barragán , César Ramírez‐Márquez +2 more | CRC Press eBooks

Enhancing erosion-corrosion resistance of cupronickel alloys via Al-addition on microstructure and mechanistic

2025-06-24

Yuan Fu Yi , Zhao Yizhi , Wenjing Zhang +7 more | Materials & Design

Effect of 0.40 % and 0.20 % Titanium Addition on Microstructure Properties and Corrosion Behavior of CuAl10Ni5Fe4 Alloy

2025-06-19

Abubaker J. Amir Irhayim , İsmail Esen , Selami Sağiroğlu +3 more | Materials Science

This study examined how post-casting heat treatment (solution treatment and tempering) and forging affected the corrosion and microstructural properties of the nickel aluminium bronze (CuAl10Ni5Fe4) with 0.20 % and 0.40% … This study examined how post-casting heat treatment (solution treatment and tempering) and forging affected the corrosion and microstructural properties of the nickel aluminium bronze (CuAl10Ni5Fe4) with 0.20 % and 0.40% titanium addition. Heat-treated CuAl10Ni5Fe4 alloy microstructures showed copper-rich α-solid solution, martensitic β-phase, and intermetallic κ-phases, such as flake-shaped κI, fine κIII, and black globular κIV. Adding 0.20 % and 0.40 % titanium to CuAl10Ni5Fe4 alloys reduced dendritic arm thickness and increased κ phase abundance. Additionally, significant κIV and κII precipitations were observed in the tempered β phase. Tempering β may cause martensitic β to split into tiny α and κIII phases. The grain refinement of the CuAl10Ni5Fe4, CuAl10Ni5Fe4-0.20 % Ti, and CuAl10Ni5Fe4-0.40 % Ti alloys was significantly noticeable after forging. The alloys retained the same α, β, and κ phases seen in the heat-treated alloys after forging. Titanium's refining effect increased the hardness of the alloy into which it was incorporated. Increased stiff phases, such as tempered β and fine κIV, contribute to increased hardness. The forging process enhanced the hardness of all three alloys. Forged and heat treated CuAl10Ni5Fe4-0.40 % Ti alloy had the highest hardness with 243.50 HB and 256.18 HB, respectively. The microstructural phases α, β, and κ significantly impact the corrosion behaviour of CuAl10Ni5Fe4 alloy. The CuAl10Ni5Fe4-0.40 % Ti alloy after forging had the lowest 24-hour weight loss of 0.003326 mg/dm2. The CuAl10Ni5Fe4 alloy loses the most weight (0.013659 mg/dm²) following heat treatment (S.T.+T) after 24 hours. The minimal corrosion rate for the CuAl10Ni5Fe4-0.40 % Ti alloy after forging was 0.003916 mg/(dm2·day) after 72 hours. Due to stratification, corrosion creates craters. Pitted or porous structures and craters are common. All alloys show a decrease in these structures after forging. The formation of the CuCl2 phase is believed to occur in regions experiencing pitting corrosion.

Metalcasting Industry Research

2025-06-19

| International Journal of Metalcasting

Impact of surface post-treatments on corrosion resistance in heat-treated laser-powder bed fused Nickel Aluminum Bronze

2025-06-18

Khashayar Morshed-Behbahani , Nika Zakerin , Addison J. Rayner +2 more | CIRP journal of manufacturing science and technology

Microstructure Evolution and Properties of Fe-Containing Free-Cutting Brass Ingots After Ti Addition

2025-06-16

Jianyu Zhang , Yinghui Wei , Wei Liu +1 more | International Journal of Metalcasting

[Comparative study on implantation safety and stability of S

2025-06-15

Qun Chen , Feng Ji , Q. S. Yin +2 more | PubMed

To explore the differences in the implantation safety and stability of a S 1 alar-iliac screw (S1AIS) or S2AIS for sacroiliac joint fixation, providing reference for selecting appropriate internal fixation … To explore the differences in the implantation safety and stability of a S 1 alar-iliac screw (S1AIS) or S2AIS for sacroiliac joint fixation, providing reference for selecting appropriate internal fixation in clinical practice. Patients who underwent pelvic CT examination between January 2024 and December 2024 were selected. CT data from 80 patients with normal pelvic structure who met the selection criteria were included in a 1∶1 male to female ratio. CT digital reconstruction technology was used to measure the transverse and longitudinal diameters of the S1AIS and S2AIS insertable ranges, as well as the length, width, and sacral side length of the screw trajectory. The pelvic CT data from 30 patients were randomly selected based on a 1∶1 male to female ratio for three-dimensional (3D) printing of pelvic samples. The S1AIS/S2AIS with a diameter of 6.5 mm and 8.0 mm were implanted at the optimal entry/exit points on the left and right sides, respectively, to observe the perforation of the screw trajectory. The pelvic CT data from 1 patient was randomly selected for 3D printing of 10 pelvic samples to simulate Tile C2 fracture. They were divided into S1AIS group ( n=5) and S2AIS group ( n=5), with one S1AIS and one S2AIS fixation used for posterior sacroiliac joint separation, and the specimen stiffness and maximum load were measured by using an electric tension torsion dual axis universal mechanical tester. The anatomical parameter measurement showed that there was no significant difference in the length and width of the screw trajectory between S1AIS and S2AIS ( P>0.05), but the transverse and longitudinal diameters of the insertable ranges, as well as the sacral side length of the screw trajectory, were all greater than those of S2AIS, with significant differences ( P<0.05). After simulating the implantation of S1AIS and S2AIS with a diameter of 6.5 mm in pelvic specimens, no screw penetration was observed. Both S1AIS and S2AIS with a diameter of 8.0 mm showed screw penetration, with S2AIS having a higher incidence of posterior lateral sacral cortical penetration (46.7%) than S1AIS (3.3%) ( P<0.05). The biomechanical test showed that the stiffness and maximum load of S2AIS were significantly lower than those of S1AIS ( P<0.05). As a method to fix the sacroiliac joint, the S1AIS has a larger insertable range, a longer sacral side length of the screw trajectory, a lower incidence of posterior lateral cortical rupture of the sacrum, and a greater fixation strength than S2AIS. Therefore, the implantation safety and fixation stability of the S1AIS are superior to S2AIS, and a diameter less than 8.0 mm screws should be selected as S2AIS for Chinese people.

COPYRIGHT PROTECTION IN CONNECTION WITH THE CIRCULATION OF NON-FUNGIBLE TOKENS

2025-06-15

Olena Nihreieva | Constitutional State

The article is dedicated to copyright protection in the context of commercialization of the circulation of non-fungible tokens (NFT). The emergence of NFTs is a natural consequence of the rapid … The article is dedicated to copyright protection in the context of commercialization of the circulation of non-fungible tokens (NFT). The emergence of NFTs is a natural consequence of the rapid development of digital technologies, which cannot be stopped. The possibility of their commercial circulation, facilitated by the conclusion of smart contracts, and their high value cause significant interest in the creation of these tokens, which, however, may be based on dishonest intentions of NFT developers who, accelerating the creation process, use the works of other authors. The main characteristics of this type of tokens, the particularities of their creation and sale are determined in the article. It is emphasized that the defining feature of NFT is their uniqueness, which is achieved by including information about the author in the blockchain. It is emphasized that the transfer of rights to NFTs mainly occurs under smart contracts, which, however, are not able to regulate in detail all the conditions of the transfer of rights to tokens and their further use. It is emphasized that the rights to NFTs are not equal to the rights to the original work that was tokenized by the creator of the NFT. The simple possession of an NFT gives only the right to claim ownership of the token itself, as for the copyright to the original object, it usually remains with its author, unless its transfer is provided for by an additional agreement. In this regard, for more effective protection of copyright, it is recommended to conclude additional agreements, which would clarify the conditions of copyright transfer and NFT further use. As a result, the process of concluding transactions with non-fungible tokens requires the introduction of a mechanism, possibly based on human intervention, that would allow identifying the originality of the corresponding digital works. As for the bona fide authors of NFTs, they are also recommended to verify the copyright to the objects they use in the token issuance process.

Synergistic Effect between Corrosion and Wear for Nickel-Aluminium Bronze Sliding against Si3N4 Ceramic Ball in Artificial Seawater

2025-06-14

Di He , Ying Lian , Yang Li | Tribology online

Effect of ultrasonic surface rolling process on microstructure and surface properties of Cu-8 wt.% Al alloy

2025-06-13

Xiaoxian Li , Xiang Wang , Lingling Liu +4 more | Materials Science and Technology

The gradient nanostructured surface layer of Cu-8 wt.% Al alloy was obtained by surface ultrasonic rolling treatment (USRT). The microstructure and surface properties of the alloy surface before and after … The gradient nanostructured surface layer of Cu-8 wt.% Al alloy was obtained by surface ultrasonic rolling treatment (USRT). The microstructure and surface properties of the alloy surface before and after treatment were systematically investigated. The results revealed that USRT could refine grain effectively. The surface microhardness reached a maximum of 213.8 HV 0.2 with an increase of 102.5% and progressively decreased from the surface into the matrix. The friction coefficient and the wear scar width were notably reduced, while the wear resistance was significantly enhanced. The corrosion resistance was greatly improved and the sample with a rolling reduction of 0.15 mm was the best.

Retraction notice to "Sources and types of plastic caps and properties characterization of plastic ropes produced from different types of plastic caps" [Heliyon 10 (2024) e34471]

2025-06-01

Molla Rahman Shaibur , Sabiha Sarwar , Balram Ambade | Heliyon

Effect of further precipitate refinement on mechanical properties and corrosion behavior of additively manufactured nickel aluminum bronze

2025-06-01

Zhiyuan Jia , Rui Li , Mingzhi Chen +3 more | Corrosion Science

Afroming dierproductierechten meststoffenwet: de finale (?)

2025-06-01

H.A. van Bommel | Tijdschrift voor Agrarisch Recht

Corrigendum to <’HVOF spray of Cr3C2-NiCr coating for enhancing the corrosion resistance of nickel aluminium bronze in 3.5% NaCI solution with different sulphide concentrations’>

2025-06-01

Ziyu Wei , Dandong Cui , Zheng Wei +1 more | Journal of Materials Research and Technology

Ultrasonic fatigue of wire arc additive manufactured (WAAM) nickel-Aluminum bronze (NAB): ex-situ corrosion

2025-06-01

MohammadBagher Mahtabi , M.R. Roshan , Wiktor Bednarczyk +1 more | Engineering Failure Analysis

Projects of Local Hydrogen Production and Consumption in Miyako Island

2025-05-31

Mina NISHI | The Journal of the Institute of Electrical Engineers of Japan

1,2,4-Triazole and Its Derivatives as Corrosion Inhibitors for Aluminum Brass (HAl77-2) in 3.5 wt.% NaCl Solution

2025-05-29

Di Zhu , Hong Ju , Hanzhi LI +1 more | Materials Science

In this work, the 1,2,4-triazole and its derivatives were used as target corrosion inhibitors, the corrosion inhibition of 1,2,4-triazole (TAZ), 3-amino-1,2,4-triazole (ATA) and 3,5-diamino-1,2,4-triazole (DAT) in 3.5 wt.% NaCl solutions … In this work, the 1,2,4-triazole and its derivatives were used as target corrosion inhibitors, the corrosion inhibition of 1,2,4-triazole (TAZ), 3-amino-1,2,4-triazole (ATA) and 3,5-diamino-1,2,4-triazole (DAT) in 3.5 wt.% NaCl solutions for aluminum brass (HAl77-2) are reported. The inhibition properties and mechanism were investigated by weight loss tests, electrochemical tests (electrochemical impedance spectroscopy and linear polarization resistance tests), surface characteristic analysis (scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) tests), and quantum chemistry calculations. The results showed that TAZ, ATA, and DAT effectively inhibited the corrosion of HAl77-2. The maximum inhibition efficiencies of the three corrosion inhibitors were 84.4 %, 86.4 %, and 87.1 %, respectively. The adsorption processes followed the Langmuir adsorption isotherm model and were of mixed type, i.e., both physisorption and chemisorption. SEM and EDS tests confirmed the effective adsorption of the TAZ, ATA, and DAT on the HAl77-2 surface. The results of quantum chemistry calculations were consistent with the electrochemical test results.

Current situation and prevention strategies of paper mills

2025-05-29

Tian Zhang | Editing Practice

In recent years, there has been a sharp increase in the retraction of academic papers due to issue of "paper mills". Multiple pieces of evidence indicate that papers produced by … In recent years, there has been a sharp increase in the retraction of academic papers due to issue of "paper mills". Multiple pieces of evidence indicate that papers produced by paper mills have infiltrated academic papers, posing a huge challenge to academic publishing integrity. This article summarizes the definition and specific manifestations of paper mills, the harm they cause, as well as the preventive and response strategies carried out by stakeholders. In addition, it puts forward suggestions and areas for improvement for the Chinese academic community in preventing paper mill issues. It provides a reference for strengthening the awareness and attention of researchers and journal editors to the problems of paper mills, promoting the implementation of more effective countermeasures, and maintaining research integrity.

Exploring the effect of Ti on He clustering in CuZr metallic alloy

2025-05-28

Dhrubanka Sarma , Debamoy Pegu , Ujjal Saikia +1 more | Physica Scripta

Abstract In this paper, we explored the role of doping and vacancy (V) in Helium(He) trapping within structural materials, using first-principles approaches. He trapping is a major concern for the … Abstract In this paper, we explored the role of doping and vacancy (V) in Helium(He) trapping within structural materials, using first-principles approaches. He trapping is a major concern for the stability and performance of structural materials used in nuclear fusion reactors, as it can lead to the formation of He bubbles. Doping with specific elements with and without vacancy defect has emerged as a potential strategy to mitigate He-induced damage, and first-principles calculations serve as an essential tool for understanding these phenomena at the atomic scale. We doped Titanium (Ti) in CuZr B2 phase alloy and analyzed behaviour of He at single Ti doping. Our results reveal that presence of Ti inhibits formation of He bubbles more than that of pure CuZr bulk. This research highlights the effectiveness of the strategy in reducing He bubble nucleation and growth and aims to provide researchers with a clear understanding of doping, vacancy defects, and He trapping in structural materials, thus contributing to the development of more resilient materials for nuclear applications.

On the Microstructure and Mechanical Behavior of As-Cast, Wire-Arc, and Laser Additively Manufactured Nickel-Aluminum-Bronze Alloy

2025-05-28

M. K. Mishra , A. Gourav Rao , Abhishek Dutt Tripathi +2 more | Metallography Microstructure and Analysis

Biogas and nutrient recovery potential: A spatially explicit analysis of China’s county-level livestock and poultry manure

2025-05-26

Hao Phu Dong , Meng Yang , Xiangyun Hu +2 more

Study on the Accumulation and Leaching of Heavy Metals in the Bottom Ash Samples from Municipal Solid Waste Incinerators

2025-05-22

Luong Thi Thu Trang , Nguyễn Thị Thanh Ngân , Nguyen Q. Minh +4 more

Recently, incineration is a popular treatment method for municipal solid waste, which generates a large amount of ash containing toxic heavy metal components, causing environmental pollution. Therefore, this study aimed … Recently, incineration is a popular treatment method for municipal solid waste, which generates a large amount of ash containing toxic heavy metal components, causing environmental pollution. Therefore, this study aimed to evaluate the accumualtion and leaching of heavy metals in the bottom ash samples collected from municipal solid waste incinerators in Vinh Phuc and Hung Yen under different pH conditions. In addition, some of the physicochemical properties (pH, EC, moisture, volatile solid…) of bottom ash were also determined. The results indicated that Cu and Zn are the most common elements existed in the bottom ash samples. The total contents of Sb in both bottom ash samples were higher than the allowable limit for hazardous waste (QCVN 07:2009/BTNMT). However, the low mobility of the heavy metals was observed.

DESIGN OF A 1 KG GOLD SMELTING FURNACE USING PERTALITE FUEL

2025-05-20

Darmawan Darmawan , Mujiarto Mujiarto , Acep Wagiman | TOPLAMA

The objective of this study is to design and test a small-scale gold melting furnace with a capacity of 1 kg that is capable of producing high enough temperatures to … The objective of this study is to design and test a small-scale gold melting furnace with a capacity of 1 kg that is capable of producing high enough temperatures to melt gold efficiently. The gold smelting process requires a significant amount of energy, making the selection of the appropriate furnace type and accurate temperature control crucial for optimizing energy efficiency and smelting results. This study involves the design of an induction heating-based smelting furnace, chosen for its efficiency in rapid and uniform heating. The melting process was carried out by heating the gold ore until it reached the melting point of gold at approximately 1064°C, while measuring the energy required during the process. The results of the study indicate that the total energy required to melt 1 kg of gold is approximately 197,531 joules.

Metalcasting Industry Research

2025-05-19