摘要
为了提高Ti6A14V钛合金的摩擦学性能，以Ni60-hBN混合粉末为原料，对其表面进行激光熔覆，并与Ni60粉末激光熔覆层进行了对比，分析了2种熔覆层的物相组成、显微组织；在2，5，8N下测试了2种熔覆层的干滑动磨损性能。结果表明：在2-8N内，Ni60熔覆层和Ni60—10％hBN熔覆层的摩擦系数和磨损率均随载荷的增加先减小后升高，在5N时，Ni60—10％hBN熔覆层具有优异的自润滑耐磨效果。
In order to improve the tribological behavior of Ti6Al4 V alloy,Ni60 coating and Ni60-10% hB N coating were fabricated on substrate of Ti6Al4 V alloy with Ni60 powder and Ni60-10% hB N powder by laser cladding,and the phase compositions and microstructures of two kinds of coatings were investigated. Dry sliding wear tests of the Ni60 and Ni60-10% hB N coatings were evaluated at 2,5,8 N,respectively. Results indicated that both the friction coefficient and wear rate of the Ni60 and Ni60-10% hB N coatings decreased firstly and then slightly increased with the increase of load from 2 N to 8 N. The Ni60-10% hB N coating had excellent self-lubricating and anti-wear properties at the load of 5 N.
出处
《材料保护》
CAS
CSCD
北大核心
2015年第7期30-32,共3页
Materials Protection
基金
江苏省自然科学基金资助项目(BK20131155)
苏州市科技计划项目(SYG201349)
作者简介
[通信作者]吴少华（1966-），教授，主要从事机械制造和摩擦学等科研和教学工作，E—mail：wush@siit．edu．cn
