等离子熔覆(CuCoCrFeNi)95B5高熵合金涂层研究  

(CuCoCrFeNi)_(95)B_5 High-Entropy Alloy Coatings Prepared by Plasma Transferred Arc Cladding Process

作　　者：张保森[1,2] 程江波[3,2] 徐滨士 

机构地区：[1]南京工程学院,江苏南京211167 [2]再制造技术国家重点实验室,北京100072 [3]河海大学,江苏南京210098

出　　处：《稀有金属材料与工程》2014年第5期1128-1132,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51105129,51205183);江苏省自然科学基金(BK2012475)

摘　　要：系统研究了等离子熔覆技术制备(CuCoCrFeNi)95B5高熵合金涂层的组织和力学性能。结果表明:等离子熔覆过程中的快速凝固条件有利于抑制涂层中金属间化合物的析出,涂层具有fcc和bcc有序固溶体结构。涂层的硬度为6.53GPa,弹性模量为213 GPa。(CuCoCrFeNi)95B5高熵合金涂层具有良好的耐磨性,其相对耐磨性为Q235钢的2.3倍;其主要磨损机理为切削与犁沟机制。Plasma transferred arc cladding process was used to fabricate （CuCoCrFeNi）95B5 multi-element alloy coating. Themicrostructure, nano-mechanical properties and wear behaviors of the coating were investigated. The results indicate that the precipitationof intermetallic compounds in the coating is effectively inhibited by plasma transferred arc cladding with rapid solidification. The coatinghas simple ordered bcc and fcc solid solution phases. The nano-hardness and elastic modulus of the coating are 6.53 GPa and 213 GPa,respectively. In addition, the （CuCoCrFeNi）95B5 high entropy alloy coating has better wear resistance. The relative wear resistance of thecoating is about 2.3 times higher than that of Q235 steel substrate under the same wet sand rubber wheel abrasion testing condition. Themain failure mode of the coating is cutting and plowing mechanism.

关 键 词：高熵合金 等离子熔覆 涂层 

分 类 号：TG174.4[金属学及工艺—金属表面处理]