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李智龙,侯利锋,卫欢,李永刚,王海洋,卫英慧.基于Cu表面原位制备高熵合金涂层的研究[J].稀有金属材料与工程(英文),2018,47(1):305~310.[Li Zhilong,Hou Lifeng,Wei Huan,Li Yonggang,Wang Haiyang,Wei Yinghui.In-situ synthesis high entropy alloy coating on copper surface using mechanicalSalloying method[J].Rare Metal Materials and Engineering,2018,47(1):305~310.]
In-situ synthesis high entropy alloy coating on copper surface using mechanicalSalloying method
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Received:November 26, 2015  Revised:January 18, 2016
DOI:
Key words: mechanical alloying  high entropy alloy  coating
Foundation item:国家自然科学基金资助(51374151);山西省科技重大专项资助项目(20111101053);2014年度山西省煤基重点科技攻关项目(MC2014-02)
Author NameAffiliationE-mail
Li Zhilong College of Materials Science and Engineering,Taiyuan University of Technology lizhilong90@126.com 
Hou Lifeng College of Materials Science and Engineering,Taiyuan University of Technology houlifeng@tyut.edu.cn 
Wei Huan College of Materials Science and Engineering,Taiyuan University of Technology  
Li Yonggang College of Materials Science and Engineering,Taiyuan University of Technology  
Wang Haiyang College of Materials Science and Engineering,Taiyuan University of Technology  
Wei Yinghui College of Materials Science and Engineering,Taiyuan University of Technology  
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Abstract:
      NiCoFeCuCr high entropy alloy coatings were in-situ synthesis on the cooper surface using mechanical alloying(MA) method. The phase composition and microstructure of the coatings were characterized using X-ray diffraction(XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy(EDS). The microstructure and the formation mechanism of the coatings were studied. It is revealed that increasing of milling time can enhance the thickness and densification of the coating. The most dense and uniform coating, with an average thickness of 40μm, were synthesized after MA for 5h, which metallurgically bonding with the copper substrate. The formation of the coating can be simpli?ed as follows:(1)Particles hammered into substrate. (2)Powder deposited on substrate through cold welding. (3)Diffusion between theScoating andSthe substrate. (4)Work hardening leading to spalling fatigue.