典型文献
Microstructures and properties of Cu-Cr-W composite coatings fabricated by surface mechanical alloying technique
文献摘要：
Cu-Cr-W composite coatings were prepared by mechanical alloying(MA)method using different powder ratios,rotational speeds and milling time.The microstructures and chemical compositions of as-synthe-sized coatings were analyzed by scanning electron micro-scopy(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 microhardness.The comparisons of cross-sectional microstructures of the coatings fabricated at different rotational speeds suggest that rotational speed of 300 r·min-1 is the optimal for fabrication the coating,and the optimal milling time for the formation of coating is 7 h.The results of microhardness test show that the hardness of the substrate is largely improved because of the as-fabri-cated coatings.The 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 it.The coating fabricated for 7 h exhibits the lowest friction coefficient,indicating its favorable friction and wear resistance.The formation mechanism of the coating was elucidated.According 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.
文献关键词：
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作者姓名：
Jia-Ping Zhang;Xiao-Mei Feng;Yi-Fu Shen;Cheng Chen;Cui-Yuan Duan
作者机构：
College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
文献出处：
引用格式：
[1]Jia-Ping Zhang;Xiao-Mei Feng;Yi-Fu Shen;Cheng Chen;Cui-Yuan Duan-.Microstructures and properties of Cu-Cr-W composite coatings fabricated by surface mechanical alloying technique)[J].稀有金属（英文版）,2022(12):4248-4256
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0.427141
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