热解碳基碳/碳复合材料的内耗特征与机制  

INTERNAL FRICTION CHARACTERS AND MECHANISM IN PYROLYTIC CARBON MATRIX CARBON-CARBON COMPOSITES

作　　者：侯向辉[1] 李贺军[2] 王灿[3] 朱震刚[3] 沈健[1] 

机构地区：[1]南京大学表面和界面化学工程技术研究中心,南京210093 [2]西北工业大学材料科学与工程学院,西安710072 [3]中国科学院固体物理所,合肥230031

出　　处：《复合材料学报》2001年第1期89-92,共4页Acta Materiae Compositae Sinica

基　　金：中国科学院固体物理所内耗与固体缺陷实验室开放基金资助

摘　　要：以高纯石墨为对照材料 ,初步研究了热解碳基碳 /碳复合材料的内耗行为 ,并根据实验结果提出了碳 /碳复合材料的内耗机制 :热滞弹性机制与静滞后型内耗机制。纤维 /基体的界面内耗效应对碳 /碳复合材料的内耗特性影响很大 ,它的存在使碳Compared with high purity graphite, the internal friction characteristics of pyrolytic carbon matrix carbon-carbon composites were studied. According to experimental results, two internal friction mechanisms were proposed, including thermoelastic and static hysteresis mechanism. The effect of the interface between carbon fiber and carbon matrix plays an important role on the internal friction characters of carbon-carbon composites, which produces some unique internal friction phenomena. The internal friction increases with the increase of temperature and the dynamic modulus decreases with the increase of temperature.

关 键 词：碳/碳复合材料 热解碳 内耗机制 

分 类 号：TB332[一般工业技术—材料科学与工程]