Tribological Properties of NiCr-Cr₃C₂ - Ni / MoS₂ Supersonic Plasma Sprayed Coating under Different Temperatures

Abstract:

NiCr-Cr₃C₂-Ni/MoS₂ composite coating was prepared by supersonic plasma spraying (S-PS) process. The tribological properties of the composite coating at 25°C, 300°C, 500°Cand 750°C were studied. The wear mechanism for the coating was discussed considering the microstructures, compositions and mechanical properties of the composite materials. Results show that the coating exhibits good tribological properties at 750°C, which was attributed to the compact and continuous Cr₃O₂ transfer film formed on the friction surface. The wear rate of the coating increases with the temperature increase, which was associated with the decrease of the mechanical strength and stress-resistance of the coatings.

• Periodical: Advanced Materials Research (Volumes 399-401)
• Pages: 2061-2066
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.399-401.2061
• Online since: November 2011
• Authors: Xu Qiang Li, Hai Jun Wang, Yong Ming Guo, Ming Liu, Ke Ke Zhao
• Keywords: MoS₂, NiCr-Cr₃C₂, Supersonic Plasma Spraying, Tribological Property

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