基体改性碳／碳复合材料抗氧化影响规律探析  

EFFECT OF MATRIX MODIFICATION ON THE OXIDATION RESISTANCE OF CARBON/CARBON COMPOSITES

作　　者：朱小旗[1] 杨峥[1] 康沫狂[1] 张海涛 

机构地区：[1]西北工业大学材料科学与工程系

出　　处：《复合材料学报》1994年第2期107-111,共5页Acta Materiae Compositae Sinica

基　　金：国防科工委八.五计划;航空基金等资助

摘　　要：碳／碳复合材料（以下简称Ｃ／Ｃ）在空气中４００℃以上显著氧化，目前所采用的防氧化涂层不能很好地解决涂层与基体间热膨胀所带来的裂纹问题，我们认为，同时着重于Ｃ／Ｃ本身改性及其涂层的抗氧化性提高，是大大改善其抗氧化性能的有效途径。本论文就是基于这一出发，点，在Ｃ／Ｃ基体中加ＺｒＯ＿２、ＳｉＯ＿２、ＳｉＣ等玻璃陶瓷粉，并且将数学工具引入实验，得到了基体添加剂对Ｃ／Ｃ抗氧化性的影响规律，实验结果表明，ＳＩＯ＿２、Ｂ＿４Ｃ等玻璃陶瓷粉显著改善Ｃ／Ｃ的抗氧化性能，大大降低氧化烧蚀率。Carbon/carbon(C/C)composites can be oxidized in air above 400℃,The crack problem can't be solved because of the different thermal expansion coefficient between coating and matrix. Increasing the oxidation resistance of coating and the C/C itself at the same time is an effective method.In this paper, ZrO_2,SiO_2.SiC,B_4C powder were added into the C/C matrix and the effect of additives on the oxidation resistance was analysed. The results show that the additlves can increase the C/C oxidation resista-nce greatly and decrease the burning rate effectively. The method of matrix modification is effective.

关 键 词：碳/碳 复合材料 氧化 非金属 

分 类 号：TB332[一般工业技术—材料科学与工程]