Study on Wear Mechanism of Chromium Carbide Coating Reinforced Cast Iron Cylinder Sleeve

Abstract:

In tribological system of internal combustion engine, cylinders and pistons were in high temperature, pressure and load working status. An SRV IV wear tester was used to measure dynamic coefficient of friction by simulating working condition of cylinder liner and piston ring. The worn surface topography was observed through scanning electron microscope and metallography. The results show that loads had little effect on the friction coefficient under oil lubrication. Cylinder with the high-chromium carburizing ring in pairs displayed wear in the form of plastic deformation, while cylinder with the phosphide cast iron ring in pairs displayed adhesive wear. The piston ring was subjected to shear stress and tensile force under dry friction condition and deformed into tapering burr. Lubricants played a bearer role under lubrication condition; therefore, surface borderline of piston ring was relatively flat.

• Periodical: Applied Mechanics and Materials (Volume 273)
• Pages: 124-128
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.273.124
• Online since: January 2013
• Authors: Zi Bo Ye, Sheng Guan Qu, Yong Hu, Guang Hong Wang
• Keywords: Adhesive Wear, Cermet Coating, Cylinder, Friction Coefficient (FC)

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