Preparation of Composites from Al and Ti3AlC2 and Its Tribo-Chemistry Reactions Against Low Carbon Steel
Al/Ti3AlC2 composites containing 50vol% Al were prepared with high purity ofpolycrystalline Ti3AlC2 and aluminum powders by pressureless-sintering route at temperatures of 700℃~ 800℃ The tribological properties of the composites were investigated by sliding the composites block dryly against low carbon steel disk under high sliding speed.Before and after friction test,the morphology and phase analysis were observed by scanning electron microscope (SEM) and X-ray diffraction (XRD),separately.A definite tribo-glazing layer was found over the worn surface of the composite block,which was the results of tribo-chemical oxidation reaction and the cause forming it could be the high frictional temperature and the mechanical catabolism between the surface of Al/Ti3AlC2 and low carbon steel during sliding friction.The effect of Ti3AlC2 on tribological properties of Al/Ti3AlC2 composite and the possible tribo-chemical reaction mechanism on surface layer of Al/Ti3AlC2 were suggested.
Al/Ti3AlC2 composites tribo-chemical reaction
Zhang Zhili Zhai Hongxiang Zhou Yang Huang Zhenying Ai Mingxing
Institute of Materials Science and Engineering,Beijing Jiaotong University,Beijing,100044,China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
989-991
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）