摘要
采用电镀方法在N80钢表面制备Ni-W合金镀层;经500℃热处理后镀层由非晶态转变为晶态,通过SEM,EDS和XRD等分析Ni-W镀层组织结构、元素能谱和物相组成,研究Ni-W镀层滑动磨损特性,测试其摩擦因数,用SEM观察试样磨损表面形貌,对磨损机理进行分析。研究结果表明:晶态Ni-W镀层为Ni基固溶体,表面显微硬度为1 100,粗糙度为454.41 nm,摩擦因数为0.52左右;Ni-W镀层具有较强的抗磨能力,磨损表面主要呈现轻微擦伤现象,镀层剥落而造成磨粒磨损,磨损率剧增。
Ni-W alloy coating was prepared on the N80 steel surface with electroplating method,its coating coating was changed from amorphous structure into crystalline structure after the heat treatment of 500 ℃,and the elements spectrums and phase compositions were analyzed by SEM,EDS and XRD,respectively.The sliding wear properties of Ni-W coating were researched;its friction coefficient was tested;the surface morphologies after wear were observed by SEM,and the wear mechanism was discussed.The results show that the crystalline Ni-W coating is composed of Ni-based solid solution,its surface microhardness is 1 100,the roughness is 454.41 nm,the friction coefficient is about 0.52,Ni-W coating has strong anti-wear ability,the coating surface after wear mainly presents minor scrape phenomenon,the particle attrition is mainly caused by coating spalling,and the wear rate increases obviously.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第9期3472-3477,共6页
Journal of Central South University:Science and Technology
基金
江苏省高校自然科学基础研究项目(08KJB430002)
常州市应用基础研究计划项目(CJ20110019)
关键词
Ni-W合金镀层
电镀
摩擦因数
磨损性能
Ni-W alloy coating
electroplating
fraction coefficient
wear property
