摘要
在无润滑条件下测定了SiC(W)/ZrO2(P)协同复合MoSi2陶瓷的磨损特性曲线,并对其磨损特征进行了分析。结果表明,随着SiC晶须以及ZrO2纳米颗粒含量的提高,MoSi2-SiC(W)/ZrO2(P)复合陶瓷的磨损特性由单纯的磨粒磨损逐渐转变为磨粒磨损和粘着磨损的混合。ZrO2纳米颗粒的加入有利于提高复合陶瓷的韧性,SiC晶须的加入有利于提高复合陶瓷的硬度,复合陶瓷的整体耐磨性主要由硬度和韧性共同决定。SiC(W)/ZrO2(P)协同复合作用使得MoSi2复合陶瓷的耐磨性得以明显改善。
The wear behavior of MoSi2-SiC(w)/ZrO2(p) ceramic composite was studied. The results show that the wear characteristics changes from abrasive wear for MoSi2 to the combination of abrasive wear and adhesion wear for MoSi2-SiC(w)/ZrO2(p) composite with increasing addition of SiC whiskers and ZrO2 nanoparticles in the composite. The addition of ZrO2 nanoparticles is beneficial to improving wear resistance of the composite due to increasing toughness of the composite. SiC whiskers improve the wear resistance of the composite because of the increase of hardness. With the addition of SiC(w)/ZrO2(p), the wear resistance of MoSi2 ceramics can be improved obviously.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2006年第4期15-19,共5页
Transactions of Materials and Heat Treatment
基金
航空基础科学基金(04G56008)
关键词
SiC(W)/ZrO2(P)
协同复合
MoSi2陶瓷
磨损特性
Abrasives
Adhesion
Ceramic matrix composites
Composite materials
Hardness
Silicon carbide
Toughness
Wear resistance
Zirconia
