High-temperature Friction and Wear Resistance of Ni-Co-SiC Composite Coatings

International Conference on Smart Engineering Materials 2018

Guo, Fang^1 ; Sun, Wan-Chang^1 ; Jia, Zong-Wei^1 ; Liu, Xiao-Jia^1 ; Dong, Ya-Ru^1

College of Materials Science and Engineering, Xi'An University of Science and Technology, Xi'an, Shaanxi

710054, China^1

关键词: After high temperature;    Ball-on-disk method;    Dispersion strengthening;    Field emission scanning electron microscopes;    Friction and wear resistance;    Friction coefficients;    High temperature performance;    Tribological characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/362/1/012008/pdf
DOI  :  10.1088/1757-899X/362/1/012008

来源: IOP

【 摘 要 】

Ni-Co alloy and SiC micro-particles were co-deposited on 45 steel by electrodeposition for high temperature performance. The high temperature tribological characteristics were studied by use of a ball-on-disk method. The micrographs and phase structure of the Ni-Co-SiC composite coatings after high-temperature friction were observed by using a field emission scanning electron microscope(FESEM). The results 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 and changing the friction mechanism from adhesive wear to abrasive wear.