Results 31 to 40 of about 148,672 (304)

Lead “Contamination / Ligature” Threshold Evaluation in Copper-Based Alloys of the Golden Horde Monuments from the Lower Volga Region

Нижневолжский археологический вестник
The article presents a study of the Golden Horde copper-based alloys to evaluate the threshold that would allow separating contaminated copper and purposefully alloyed with lead.
Kseniya S. Kovaleva
doaj   +1 more source

An improved composition design method for high-performance copper alloys based on various machine learning models

AIP Advances, 2023
The preparation of high-performance copper alloys generally considers alloying approaches to solve the conflicting problems of high strength and high electrical conductivity.
Siyue Zhao, Na Li, Guangtong Hai, Zhigang Zhang   +3 more
doaj   +1 more source

Effect of copper-enriched layers on localized corrosion of aluminium-copper alloys

Revista Facultad de Ingeniería, 2018
Copper-enriched layers were developed onto aluminum-copper alloys using alkaline etching in sodium hydroxide, for both, sputter deposited and bulk conditions.
María Ángeles Arenas-Vara, Peter Skeldon, Sandra Judith García-Vergara   +2 more
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Review of nano-phase effects in high strength and conductivity copper alloys

Nanotechnology Reviews, 2019
Copper alloys and copper matrix composites have been attracting a lot of attention lately. Their composition design, preparation, and processing directly affect the final performance.
Zhang Xiaohui, Zhang Yi, Tian Baohong, Song Kexing, Liu Ping, Jia Yanlin, Chen Xiaohong, An Junchao, Zhao Zhuan, Liu Yong, Volinsky Alex A., Li Xu, Yin Ting   +12 more
doaj   +1 more source

Conservation of Heritage Sites in Kathmandu, Nepal: Assessing the Corrosion Threat from Pigeon Excreta on Metal Monuments

Conservation, 2022
Pigeons have long been a common nuisance at numerous cultural sites in the Kathmandu Valley. Besides the health, economic and aesthetic issues caused by the pigeon excreta, this waste may also result in damaging effects to the materials used in Nepalese ...
Saroj Shrestha, Laxman Khanal, Naresh Pandey, Randall C. Kyes   +3 more
doaj   +1 more source

Copper-acrylic enamel serves as lubricant for cold drawing of refractory metals [PDF]

, 1966
Acrylic enamel spray containing metallic copper pigment lubricates refractory metal tubing during cold drawing operations so that the tubing surface remains free from scratches and nicks and does not seize in the die.
Beane, C., Karasek, F.
core   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Studies of concentration and temperature dependencies of precipitation kinetics in iron-copper alloys using kinetic monte carlo and stochastic statistical simulations

, 2012
The earlier-developed ab initio model and the kinetic Monte Carlo method (KMCM) are used to simulate precipitation in a number of iron-copper alloys with different copper concentrations x and temperatures T.
A V Barashev, A Yu Stroev, C Wagner, F Soisson, F Soisson, F Soisson, F Soisson, F Soisson, I M Lifshitz, I. A. Zhuravlev, K Yu Khromov, K. Yu. Khromov, M H Mathon, M K Miller, M Nastar, R P Kolli, R P Kolli, R Shabadi, S R Goodman, V G Vaks, V G Vaks, V G Vaks, V Yu Dobretsov, V. G. Vaks   +23 more
core   +1 more source

Thermoreflectance Detection of Point Defects Resulting from Focused Ion Beam Milling

Advanced Engineering Materials, EarlyView.
Focused ion beam (FIB) milling is a common tool for nanoscale material processing, however irradiation damage, redeposition, and contamination can occur. We use several characterization tools to show FIB‐induced effects beyond 1 mm from the milled area.
Thomas W. Pfeifer, Eric R. Hoglund, Anton V. Ievlev, Patrick E. Hopkins   +3 more
wiley   +1 more source