Wearing of NiP electrolytic coatings at sliding friction

Aslanyan I.R., Schuster L.S.
UDC
УДК 629.7.023.222:620.178.162
DOI
10.18577/2307-6046-2015-0-3-8-8
Article PDF (Russian) (742.95 KB)
How to cite
Aslanyan I.R., Schuster L.S. Wearing of NiP electrolytic coatings at sliding friction // Proceedings of VIAM. 2015. No. 3. DOI: 10.18577/2307-6046-2015-0-3-8-8. URL: https://test.viam.ru/en/journal/2015/3/8
Abstract

An effect of reinforcing silicon carbide additives and heat treatment on the wear of nickel-phosphorous coatings (NiP) produced by electrodeposition was investigated. It was found that the wear of the investigated coatings could have an abrasive-oxidative nature: predominantly abrasive for NiP–SiC composite coatings and predominantly oxidative for NiP coatings accompanied by fatigue fracture of nickel oxides. Additives of SiC allow increasing the hardness of electrolytic coatings, but they prevent fixation of oxide films formed during friction on the contact surface. Heat treatment increases the hardness of the coatings due to deposition of the crystalline phase Ni3P, which reduces the wear rate of the coatings.

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