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Effect of Temperature on Mo–C Blend Composite Coating for Piston Ring Applications

The Mo–C blend composite coating was effectively developed with good surface morphology and enriched tribological properties using APS coating procedure for piston ring applications. The surface roughness values of composite coating maximum at 450 °C. The experimental result
 of Mo–C based coating shows that as the temperature varies from 30 to 450 °, COF decreases from 0.6 to 0.3, while specific wear rate was increased from 0.2 to 0.5 mm3/Nm. The increase in specific wear rate and decrease in COF may be attribute due to tribofilm formation
 on Mo blend composite coating.