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

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-...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2018-05, Vol.362 (1), p.12008
Main Authors: Guo, Fang, Sun, Wan-chang, Jia, Zong-wei, Liu, Xiao-jia, Dong, Ya-ru
Format: Article
Language:English
Subjects:
Abrasive wear
Adhesive strength
Adhesive wear
Cobalt
Coefficient of friction
Dispersion hardening alloys
Dispersion strengthening
Field emission microscopy
Friction
High temperature
Medium carbon steels
Nickel base alloys
Photomicrographs
Protective coatings
Silicon carbide
Solid phases
Substrates
Thermal stability
Tribology
Wear mechanisms
Wear resistance
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Summary: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.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/362/1/012008