Effect of Oxidation on Fracture Toughness of a Carbon/Carbon Composite  

作　　者：张程煜 郭永 

机构地区：[1]Science and Technology on Thermostructural Composite Materials Laboratory,Northwestern Polytechnical University [2]School of Chemistry andChemical Engineering,Shanxi Datong University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2012年第5期944-947,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by National Natural Science Foundation of China(No.50702045);the Program for New Century Excellent Talents in University(No.NCET-08-0460);Basic Research Foundation of NWPU(No.JC20100227)

摘　　要：The fracture toughness of a carbon/carbon composites oxidized at different temperature for 1 h was measured. The fracture surfaces were examined by scanning electron microscopy （SEM）. The results indicate that oxidation temperature has significant effects on the fracture toughness. Fracture toughness decreases with the increase of the weight loss. The SEM images reveal that the decrease of fracture toughness was mainly attributed to the oxidation of the interface in the composite.The fracture toughness of a carbon/carbon composites oxidized at different temperature for 1 h was measured. The fracture surfaces were examined by scanning electron microscopy （SEM）. The results indicate that oxidation temperature has significant effects on the fracture toughness. Fracture toughness decreases with the increase of the weight loss. The SEM images reveal that the decrease of fracture toughness was mainly attributed to the oxidation of the interface in the composite.

关 键 词：C/C composite fracture toughness oxidation 

分 类 号：TB332[一般工业技术—材料科学与工程]