Friction behaviors of carbon/carbon composites with different pyrolytic carbon textures
Friction behaviors of carbon/carbon composites with different pyrolytic carbon textures
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DOI：
10.1016/j.carbon.2005.08.022
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发表时间：
2006-03-01
期刊：
影响因子：
10.9
通讯作者：
Xu, HJ
中科院分区：
文献类型：
--
作者：
Xiong, X;Huang, BY;Xu, HJ
利用自制的实验室规模测功机模拟飞机正常着陆（NL）、过度着陆（OL）和拒绝起飞（RTO）工况，研究了具有光滑层状（SL）、中等织构粗糙层状（RL）和高织构RL热解碳织构的碳/碳（C/C）复合材料的摩擦磨损性能。用扫描电子显微镜观察不同制动水平下磨损表面的形貌。结果表明，添加RL的C/C复合材料在不同制动水平下具有接近恒定的摩擦系数、稳定的摩擦曲线和适当的磨损量，而添加SL热解碳的C/C复合材料在OL和RTO条件下摩擦系数急剧下降，氧化损失大幅增加。因此，具有高中织构RL热解碳的C/C复合材料可以满足飞机制动器的要求。含有RL的C/C复合材料具有良好的摩擦磨损性能，这是由于RL的特性导致摩擦表面形成均匀的摩擦膜。 (C) 2005 年，爱思唯尔有限公司出版。
Friction and wear properties of carbon/carbon (C/C) composites with a smooth laminar (SL), a medium textured rough laminar (RL) and a high textured RL pyrolytic carbon texture were investigated with a home-made laboratory scale dynamometer to simulate airplane normal landing (NL), over landing (OL) and rejected take-off (RTO) conditions. The morphology of worn surfaces at different braking levels was observed with scanning electron microscopy. The results show that C/C composites with RL have nearly constant friction coefficients, stable friction curves and proper wear loss at different braking levels, while friction coefficients of C/C composites with SL pyrolytic carbon decrease intensely and their oxidation losses increase greatly under OL and RTO conditions. Therefore, C/C composites with a high and medium textured RL pyrolytic carbon may satisfy the requirements of aircraft brakes. The good friction and wear properties of C/C composites with RL are due to the properties of RL, which leads to a uniform friction film forming on the friction surface. (C) 2005 Published by Elsevier Ltd.