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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Veröffentlicht in:	IOP conference series. Materials Science and Engineering 2018-05, Vol.362 (1), p.12008
Hauptverfasser:	Guo, Fang, Sun, Wan-chang, Jia, Zong-wei, Liu, Xiao-jia, Dong, Ya-ru
Format:	Artikel
Sprache:	eng
Schlagworte:	Abrasive wear 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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Beschreibung
Zusammenfassung:	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