摘要
从提高陶瓷材料的力学性能出发,采用真空热压工艺,制备了混合稀土氧化物稳定的Y-Ce-ZrO2-TiC-Al2O3复合陶瓷材料。对复合陶瓷材料进行了摩擦磨损性能实验研究,采用扫描电镜对其磨损表面形貌进行了观察,对磨损表面物相进行了X射线衍射分析。并与单相ZrO2陶瓷作对比,探讨了复合陶瓷材料的磨损机理。研究表明,该复合陶瓷材料具有较高的综合力学性能,在法向载荷为140 N、转速为200 r/min干摩擦条件下,Y-Ce-ZrO2-TiC-Al2O3复合陶瓷摩擦系数为0.65,磨损率为2.88×10-7mm3/N.m,明显低于单相ZrO2陶瓷,其磨损机理为机械冷焊和粘着磨损。
In order to improve the mechanical properties,Y-Ce-ZrO2-TiC-Al2O3 composite ceramic material stabilized with the mixture of rare earth oxides was prepared by vacuum hot pressing technique.Friction and wear properties of the ZrO2 based composite ceramic material were investigated.Morphologies of the worn surfaces were observed by SEM and phase analysis was carried out by XRD.Wear mechanisms of the composite ceramic material were analyzed comparing with that of single phase ZrO2 ceramic.The results indicated that the developed composite ceramic material has higher mechanical properties.Under the normal load of 140 N and the rotational speed of 200 r/min,the coefficient of friction and wear rate of Y-Ce-ZrO2-TiC-Al2O3 composite ceramic material were 0.65 and 2.88×10-7 mm3/N·m,respectively,which were obviously lower than that of single-phase ZrO2 ceramic.Wear mechanisms of the composite ceramic material were mechanically cold welding and adhesive wear.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2011年第3期752-757,共6页
Journal of Synthetic Crystals
基金
教育部新世纪优秀人才支持计划(NCET-10-0866)
山东省自然科学杰出青年基金(JQ201014)
国家自然科学基金(51075248)
山东省自然科学基金(ZR2009FZ005)资助项目
关键词
复合陶瓷
ZRO2
摩擦磨损
磨损机理
composite ceramic
zirconia
friction and wear
wear mechanism
