A Study On The Wear And Friction Properties As Well As The Wear Mechanisms Of SiC/Fe-Based Composites

The wear resistance behaviors and other mechanical behaviors of the SiC particles/Fe-based composites were studied. The results were compared with those of the Fe-based alloy. When sintered at 1050C,the wear resistance of the composites were better than that of the ferroalloy under both low and heavy load without oil lubrication. The wear resistance,hardness,and other mechanical properties of the composites with nickel coated SiC were better than those of the composites with bare SiC particles. However,when sintered at 1100C,interfacial reaction became so acute that the properties of the composites with nickel coated SiC particles was worse than those of the composites with bare SiC particles. The proposed wear mechanisms of the materials without oil lubrication were the followings:the wear mechanisms of the ferroalloy are adhesive wear,abrasive wear,and some oxidation wear. The wear mechanisms of the composites are abrasive wear and the brittle peeling off. The abrasive wear and the brittle peeling off increased with the increase of SiC particles content in the composites.