摘要
选择不同的基体(LD31、LY12)和不同的增强体颗粒大小(3.5、10、20μm),对铝基复合材料在汽车制动过程中的摩擦磨损机理进行了研究,包括汽车制动盘在制动过程中复合材料表面转移膜的形成机制、转移膜的作用及制动过程中复合材料的磨损机制。研究结果表明,在制动过程中,复合材料的摩擦表面迅速形成对磨材料的转移膜,并且该转移膜均匀牢固,不易剥落,对复合材料的摩擦因数和磨损量起着非常重要的作用。现制造出的铝基复合材料制动盘实用件已经进入相关的台架试验,为指导汽车制动盘用非连续增强铝基复合材料的设计和优化提供了重要的理论依据。
By choosing different kinds of aluminum alloy matrixes(LD31,LY12)and reinforcing particle sizes(3.5,10,20μm),some researches are done on the mechanism of friction and wear for SiCp/Al composites,composites show its own characteristic during the braking:transfer layer which is uniform and fastness can quickly form from counterpart material on the friction surface of composites,which makes a great effect on friction efficient and wear amount of composites.Forming mechanism of transfer layer and its effect,wear mechanism of composites are studied in this article,which provides a significant theory base for designing and optimizing composites for brake discs.Finally,brake discs are made from aluminum matrix composites and ready for further test.
出处
《汽车工艺与材料》
2004年第7期37-39,42,共4页
Automobile Technology & Material
关键词
铝基复合材料
摩擦
磨损
应用
aluminum matrix composites
friction
wear
application
