摘要
Cu-based powder metallurgy brake materials are used for aircraft widely and successfully.The characteristics of worn surface of Cu-based powder metallurgy brake materials for aircraft after working under service condition were studied,and two main wear mechanisms were discussed.The results show that the main components of worn surface are graphite,SiO2,Fe,Cu and oxide of Fe(Fe3O4 and FeO);the worn surface can be divided into three zones:severe wear zone,mild wear zone,and low wear zone; fatigue wear and grain wear are the main wear mechanisms of Cu-based materials.Some debris kept between brake discs reduce the wear rate to a certain extent by taking part in the regeneration of friction film.
Cu-based powder metallurgy brake materials are used for aircraft widely and successfully. The characteristics of worn surface of Cu-based powder metallurgy brake materials for aircraft after working under service condition were studied, and two main wear mechanisms were discussed. The results show that the main components of worn surface are graphite, SiO2, Fe, Cu and oxide of Fe （Fe3O4 and FeO）; the worn surface can be divided into three zones： severe wear zone, mild wear zone, and low wear zone; fatigue wear and grain wear are the main wear mechanisms of Cu-based materials. Some debris kept between brake discs reduce the wear rate to a certain extent by taking part in the regeneration of friction film.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2007年第1期99-103,共5页
Transactions of Nonferrous Metals Society of China
基金
Project(2003AA305680)supported by the Hi-Tech Research and Development Program of China
关键词
粉末冶金
铜
航行器
耐磨机械装置
powder metallurgy brake materials
wear
copper matrix
aircraft
worn surface
