Tribological Properties of Ni-Base Alloy Coatings Reinforced by SiC Particles

Abstract:

Ni-Co/SiC composite coatings embedded with different sizes of micron-Sic particles were prepared on the surfure of 45 carbon steel through electrochemical deposition. The effects of size of SiC particles on the microstructure, the hardness and tribological properties of the composite coatings were investigated. The results show that the decrease of the size may increase the hardness, make microstructure closer and greatly improve their wear resistance. The Ni-Co/SiC(W7) coating exhibit better integrated properties, its hardness was HV505, 20 percent higher than Ni-Co alloy coating, and its wear rate was only 1/5 of the Ni-Co/SiC(W40) coating. The wear mechanisms of the coatings are mainly plastic deformation with slight adhesive wear.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 181-185
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.181
• Online since: June 2012
• Authors: Ting Xu, Ye Fa Tan, Bin Liu
• Keywords: Composite Coating, SiC Particles, Size, Tribological Property

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