钛活化预制坯制备Al_2O_3p/45钢复合材料的摩擦磨损性能  

Friction and Wear Properties of Ti-activated Preform Al_2O_3p/45 Steel Matrix Composite

作　　者：王健[1] 卢德宏[1] 贺小刚[1] 蒋业华[1] 

机构地区：[1]昆明理工大学材料科学与工程学院,昆明650093

出　　处：《机械工程材料》2015年第1期77-81,85,共6页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(51265019)

摘　　要：研究了挤压铸造制备的5%Ti-Al2O3p/45钢复合材料和Al2O3p/45钢复合材料在不同转速和压力下的摩擦磨损性能。结果表明：两种复合材料的磨损量均随转速和压力的增加而增大,且前者的磨损量更低,其原因是钛在Al2O3颗粒表面生成TiC涂覆层,增强了Al2O3颗粒与45钢基体的界面结合性能,提高了复合材料的耐磨性能;两种复合材料的摩擦因数相当,在0.58~0.92之间,且均随转速和压力的增大而减小。The friction and wear properties of squeeze cast 5%Ti-Al2O3p/45 steel matrix composite and Al2O3p/45 steel matrix composite at different rotate speeds and pressures were studied.The results show that the wear loss of the two kinds of composites all increase with the increase of rotate speed and pressure,and the wear loss the the former is lower,because Ti particles on Al2O3 particles surface forming TiC coating layer,which enhance the interface bonding between Al2O3 particles and the matrix,as well as the wear resistance of the composite.The friction coefficients of the two kinds of composites,at the range of 0.58 and 0.92,are almost same and they all decrease with the increase of rotate speed and pressure.

关 键 词：Al2O3颗粒增强钢基复合材料 钛活化预制坯 耐磨性能 

分 类 号：TB331[一般工业技术—材料科学与工程]