Effect of braking speeds on the tribological properties of carbon/carbon composites
发布时间：2021-07-16
点击次数：
DOI码：10.2320/matertrans.M2009390
所属单位：中南大学
发表刊物：Materials Transactions
关键字：carbon/carbon composites，pyrolytic carbon，tribological property，braking speed，worn surface
摘要：This paper describes the tribological properties of carbon/carbon composites used as braking materials under various braking speeds, in which the materials with three kinds of microstructures were used: rough lamina (sample A), smooth lamina (sample B), and the mixture of rough lamina and smooth lamina (sample C), respectively. Friction tests were carried out through a laboratory dynamometer. Polarized optical microscopy (OM) and scanning electron microscopy (SEM) were used to characterize the microstructure and worn surface. Results indicated that the friction coefficient of sample A reached a peak value at braking speed lower than that in both sample B and sample C. However, when the friction coefficients reached to the peak values the temperature inside the worn surface was observed to be approximately 250 degrees C for all of the samples. The weight losses in all of the samples were observed to increase with increasing braking speed; however, the oxidation losses at speed of 28 m.s(-1) are higher than that of 30 m.s(-1) for all of the samples
论文类型：文章
学科门类：工学
一级学科：材料科学与工程
文献类型：J
卷号：51
期号：5
页面范围：1038-1043
ISSN号：1345-9678
是否译文：否
发表时间：2010-05-17
收录刊物：SCI