化学气相沉积碳／碳复合材料摩擦学行为研究

Study of Tribological Behavior Carbon-carbon Composite Prepared by CVD

研究了化学气相沉积碳／碳（Ｃ／Ｃ）复合材料的摩擦磨损性能。全尺寸Ｃ／Ｃ复合材料刹车盘在不同的比压、能载、环境条件下试验结果表明：Ｃ／Ｃ复合材料的摩擦系数随着比压、能载的增大以及环境湿度的提高而减小。Ｃ／Ｃ复合材料具有良好的自润滑性能，磨损率仅为９．５×１０－４ｍｍ／面·次。其磨损是由机械磨损和氧化磨损共同作用的结果，氧化磨损为根本原因。

The frictional and wear proerties of carbon-carbon(C/C)composite prepared by CVD was studied.Under different pressure,energy and environment conditions,the full scale brake discs of C/ C compositewere tested.The results showed that the friction factor of C/C composite decreased as pressure,energy andenvironmental dump increased.C/C composite has better self-lubrication properties.Its specific wearabilityis only 9.5×10-4mm per surface each time. The wear iS generated oxidatively and mechanically,and theoxidation plays the key role.