High-temperature friction and wear resistance of electrodeposited Ni-Co-SiC composite coatings
Ni-Co alloy and SiC micron particles were codeposited on 45 steel by electrodeposition for high temperature performance.The composition and microstructure of the composite coating were characterized.Meanwhile,the high temperature tribological characteristics were studied by use of a pin-on-disk method.The deposited composite coating shows dispersed SiC particles and continuous Ni-Co matrix,and there are no pores and cracks and other defects at the interface between the composite coating and the substrate.The results also reveal that the Ni-Co-SiC composite coating presents better wear resistance and lower friction coefficient at high temperature in comparison with that of Ni-Co coating and 45 steel substrate.The embedded SiC particles could strengthen the alloy coating by dispersion strengthening effect,changing the friction mechanism from adhesive wear to abrasive wear.
Electrodeposition Composite coatings Ni-Co-SiC High-tempreature wear resistance Friction
Fang Guo Wan-chang Sun Zongwei Jia Jiamin Xu Yuan Wang
College of Materials Science and Engineering,Xi”an University of Science and Technology,Xi”an,Shaanxi 710054,P.R.China
国内会议
杭州
英文
139-146
2017-10-01（万方平台首次上网日期，不代表论文的发表时间）