SiC涂层/B4C改性炭基复合材料的氧化行为研究

宇航材料工艺 , 1999, 29(2): 43-47. doi: 10.3969/j.issn.1007-2330.1999.02.011

SiC涂层/B4C改性炭基复合材料的氧化行为研究

郭全贵 ^1, , 宋进仁 ^2, , 刘朗 ^3, , 张碧江 ^4,

1.中国科学院山西煤炭化学研究所,太原,030001

2.中国科学院山西煤炭化学研究所,太原,030001

3.中国科学院山西煤炭化学研究所,太原,030001

4.中国科学院山西煤炭化学研究所,太原,030001

关键词： SiC , B4C , 复合材料 , 氧化行为

Oxidation Behavior of the Composites with SiC Coating and Carbon Substrates Internally Modified by B4C Additives

以Si和SiO为硅化蒸气源,用CVR和CVI工艺对两种基体材料(纯石墨和B4C粒子改性石墨)进行了高温硅化处理,得到了四种复合材料:SiC涂层/石墨(SC/G),梯度SiC涂层/石墨(GSC/G),SiC涂层/B4C改性石墨(SC/BG)和梯度SiC涂层/B4C改性石墨(GSC/BG).考察了四种复合材料在1200℃的恒温氧化行为.同时也考察了梯度SiC涂层/B4C改性石墨在1300℃及经历了10次(ΔT=1000℃)热冲击后的氧化行为.对复合材料的结构特征与其高温抗氧化的相关性进行了分析.

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材料期刊网

SiC涂层/B4C改性炭基复合材料的氧化行为研究

Oxidation Behavior of the Composites with SiC Coating and Carbon Substrates Internally Modified by B4C Additives

参考文献