微珠陶瓷材料的摩擦磨损性能  

WEAR RESISTANCE OF CERAMIC MICROBEADS

作　　者：乐明[1] 杨金龙[1] 席小庆[1] 黄勇[1] 

机构地区：[1]清华大学材料科学与工程系新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《硅酸盐学报》2006年第9期1106-1111,共6页Journal of The Chinese Ceramic Society

基　　金：国家863计划(2001AA337060和2004AA33G110)资助项目

摘　　要：由高温摩擦磨损试验研究了复合莫来石(22.6%硅酸锆,75%莫来石,2.4%碳酸钙,质量分数)、硅酸锆和氧化铝3种陶瓷微珠材料在干摩擦和水润滑条件下的摩擦磨损性能,并对其磨损机理进行了分析。结果表明:3种材料的磨损均随着负荷的增加而加剧;在同等载荷下,水润滑条件相对于干摩擦,复合莫来石和硅酸锆的磨损都有所降低,氧化铝磨损反而加剧。在低载荷下,微珠磨损机理主要是塑性变形和微裂纹,在较高载荷下,主要磨损机理是脆性剥落和磨粒磨损。The wear resistance and wear mechanism of three types of ceramic microbeads, mullite composite （22.6% zirconium silicate, 75% mullite, 2.4% calcium carbonate, in mass）, zirconium silicate and alumina, were studied by a wear test under both dry and water lubrication conditions. The results show that the wear extent of the ceramics increases with the increase of the applied load. For water lubrication conditions compared with dry friction under same load, the wear of the mullite composite and zirconium silicate is mitigated but that of alumina increases. The main wear mechanism of the ceramics is plastic deformation and microcracks at lower loads, and brittlement stripping and grains pulling out at higher loads.

关 键 词：复合莫来石 硅酸锆 氧化铝 耐磨性 陶瓷微珠 

分 类 号：TQ174[化学工程—陶瓷工业]