Influence of MoS₂ on the Microstructures and Properties of Ni-Based Alloying Coating

Abstract:

Ni/MoS₂ composite coatings with different content of MoS₂ were produced on the surface of 1045 steel by laser cladding technology. SEM and EPMA were used to analyze the microstructures and micro area compositions of the coatings. Dry friction and wear properties of the coatings were tested by friction and wear tester. The results indicate that the microstructures of Ni/MoS₂ composite coating are large quantities of different-form white silicides and black sulfides distributing on the substrate. The sulfides mainly consist of Cr_xS_y, MoS₂ and FeS. When the content of MoS₂ is 9%, Ni/MoS₂ composite coating exhibits best tribological properties.

• Periodical: Applied Mechanics and Materials (Volumes 130-134)
• Pages: 1276-1280
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.130-134.1276
• Online since: October 2011
• Authors: Bin Han, Min Peng Xue, Wang Yong, Meng Fei Yu
• Keywords: Friction, Laser Cladding, Microstructure, MoS₂, Self-Lubricating Coating, Wear

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