Friction and Wear Behavior of Textured Al₂O₃/TiC Ceramic Surface Filled with MoS₂ Solid Lubricants

Abstract:

Three different textures were produced by Laser Surface Texturing (LST) on Al₂O₃/TiC ceramic surfaces. MoS₂ solid lubricants were filled into the textures. The friction and wear properties of textured and untextured surfaces were investigated by carrying out sliding tests against AISI440C stainless steel balls. Results showed that the textured surfaces filled with MoS₂ solid lubricants exhibited lower friction coefficient and excellent anti-wear properties compared with untextured surfaces. At the texture spacing of 100μm, 150μm and 200μm, wavy textured surface had the lowest friction coefficient, while it was the dimpled surface at the texture spacing of 250μm. MoS₂ film in the spaces between the textures was formed by mechanical engagement of particles in the rough surfaces and solid lubricants in textures. The friction coefficient and wear rates were reduced by supply of solid lubricants from the textures to the surfaces, bulges around the textures and TiO₂ formed after laser texturing.

• Periodical: Applied Mechanics and Materials (Volumes 229-231)
• Pages: 35-39
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.229-231.35
• Online since: November 2012
• Authors: You Qiang Xing, Jian Xin Deng, Ze Wu, Yun Song Lian
• Keywords: Al₂O₃ Ceramic, Friction, Laser Surface Texturing, MoS₂ Solid Lubricants, TiC Ceramic, Wear

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