Ni-P-Diamond Composite Coating on Friction Shims

Abstract:

Ni-P diamond particles (20μm) composite coating on friction shims were prepared by electroless plating. Morphology and phase composition of the composite coating were measured by SEM with EDS and XRD. The friction coefficient of the coating was test with scratch test. The results showed that diamond particles distribution was uniform and not stacked by two steps for 10 min. The diamond particles were half embedded in the Ni-P substrate. The element of the coating was Ni,P,C and the phase composition was Ni and diamond. Adhesion of the composite coating was higher than that of the Ni-P coating. Friction coefficients of the Ni-P coating and Ni-P composite coating were 0.47 and 0.18. Half –naked diamond particles played a pinning role and prevented from wear of the coating to get the big friction coefficient and good wear resistance. This Ni-P composite coating on friction shims would improve friction shims technology and realize the production of localization of friction shims.

• Periodical: Advanced Materials Research (Volumes 652-654)
• Pages: 1862-1865
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.652-654.1862
• Online since: January 2013
• Authors: Hua Chen, Hai Ying Sun, Su Qiu Jia
• Keywords: Diamond Particles, Electroless Composite Plating, Friction Coefficient (FC), Friction Shims, Ni-P

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