| C/C-SiC梯度基复合材料氧化行为研究 |
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| 引用本文： | 邓景屹,刘文川,杜海峰,成会明,李依依.C/C-SiC梯度基复合材料氧化行为研究[J].硅酸盐学报,1999,27(3):357-361. |
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| 作者姓名： | 邓景屹 刘文川 杜海峰 成会明 李依依 |
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| 作者单位： | 中国科学院金属研究所 |
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| 基金项目： | 国家863计划新材料领域资助 |
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| 摘 要： | 研究比较了Ｃ／Ｃ－ＳｉＣ梯度基复合材料和Ｃ／Ｃ复合材料的氧化行为．实验结果表明：ＳｉＣ通过占据表面活性点提高了共沉积基体的氧化起始温度；由于减少了碳与氧的接触面积，阻挡氧化凹坑的扩展，降低了材料的氧化质量损失速率．利用ＳＥＭ观察了梯度基复合材料微观氧化过程
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| 关 键 词： | 碳/碳 梯度基复合材料 共沉积 氧化防护 |
OXIDATION BEHAVIOR OF C/C-SiC GRADIENT MATRIX COMPOSITES |
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| Deng Jingyi,Liu Wenchuan,Du Haifeng,Cheng Huiming,Li Yiyi.OXIDATION BEHAVIOR OF C/C-SiC GRADIENT MATRIX COMPOSITES[J].Journal of The Chinese Ceramic Society,1999,27(3):357-361. |
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| Authors: | Deng Jingyi Liu Wenchuan Du Haifeng Cheng Huiming Li Yiyi |
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| Abstract: | The oxidation behavior of C/C and C/C-SiC gradient matrix composites were compared. The research results show that oxidation threshold of C-SiC co_deposited matrix increases through surface active sites occupied by SiC particles. Because of existence of SiC in carbon matrix, contact area between C and O2 decreases and oxidized pits are prevented from growing, resulting in decrease of oxidation mass loss. The micro_oxidation process was observed by SEM. |
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| Keywords: | carbon/carbon gradient matrix composites co_deposition oxidation resistance |
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