Microstructures and properties of Cu-Cr-W composite coatings fabricated by surface mechanical alloying technique

作     者：Jia-Ping Zhang Xiao-Mei Feng Yi-Fu Shen Cheng Chen Cui-Yuan Duan Jia-Ping Zhang;Xiao-Mei Feng;Yi-Fu Shen;Cheng Chen;Cui-Yuan Duan

作者机构：College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第12期

页      面：4248-4256页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Nature Science Foundation of China (No.51475232) the Jiangsu Province Natural Science Foundation (No.BK20141411) a Project Founded by the Priority Academic Program Development of Jiangsu Higher Education Institution 

主　　题：Mechanical alloying Composite coating Powder ratio Processing parameter 

摘      要：Cu-Cr-W composite coatings were prepared by mechanical alloying(MA)method using different powder ratios,rotational speeds and milling *** micro structures and chemical compositions of as-synthesized coatings were analyzed by scanning electron microscopy(SEM)and energy-dispersive spectroscopy(EDS).Phases of ball-milled powders were identified by X-ray diffraction(XRD).The results indicate that the coating fabricated with powder ratio of 40 wt%Cu-Cr-W has better surface and cross-sectional microstructures and higher *** comparisons of cross-sectional micro structures of the coatings fabricated at different rotational speeds suggest that rotational speed of 300 r·min-1is the optimal for fabrication the coating,and the optimal milling time for the formation of coating is 7 *** results of microhardness test show that the hardness of the substrate is largely improved because of the as-fabricated *** results of the friction and wear tests indicate that the wear resistance of the copper substrate is improved after the deposition of Cu-Cr-W coating on *** coating fabricated for 7 h exhibits the lowest friction coefficient,indicating its favorable friction and wear *** formation mechanism of the coating was *** to the investigations in this work,the Cu-Cr-W coating fabricated by MA method is considered to be effective to reinforce the copper substrate.