Al_2O_3-TiC-Co复合材料的单磨粒摩擦和磨损

FRICTION AND WEAR OF ADVANCED Al_2O_3-TiC-Co COMPOSITE UNDER SINGLE ABRASIVE

用扫描电镜中的摩擦磨损原位观察装置研究Al2O3-TiC-Co复合材料在单磨粒作用下的摩擦磨损性能．

The friction and wear properties of hot-pressed Al2O3-TiC-Co advanced composites under single abrasive, which have been made by use of Al2O3 and TiC powders chemically coated with cobalt film on their surfaces, have been studied in this paper with the help of an in-situ observation apparatus in scanning election microscopes (SEM). The experiments show that the friction behaviors of Al2O3-TiC-Co vary with different wear environments. The experiments rates of Al2O3-TiC-Co materials parabolicly increase with wear load increasing. The results also indicate that the microcutting and brittle fractures are the dominant mechanisms.