Wear Property of Superfine Grained Si2N2O-Si3N4 Composites
Si3N4-Si2N2O composites were fabricated with amorphous nano-sized silicon nitride powders by the liquid phase sintering.The mass loss,relative density and average grain size increase with increasing sintering temperature.The average grain size is less than 500nm when the sintering temperature is lower than 1700℃.Friction coefficient is from 0.35 for sintering temperature 1650℃ to 0.74 for 1600℃ when the composites were worn by silicon nitride bearing ball.High hardness of 21.5GPa and relative wear resistance of 32 were observed at a sintering temperature of 1600℃.The wear surface are very smooth and no grooving and subsurface fracture,which indicates that they are worn slightly.
Superfine grain Si3N4-Si2N2O Wear property Relative wear resistance
Junting LUO Qing Zhang Hongbo Li
College of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China;State Key Laboratory o College of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,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
917-919
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）