| C/C复合材料SiC/mullite-Si-Al_2O_3复合涂层微观结构及防氧化性能研究 |
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| 引用本文： | 仝珂,李贺军,史小红,付前刚,李克智.C/C复合材料SiC/mullite-Si-Al_2O_3复合涂层微观结构及防氧化性能研究[J].固体火箭技术,2009,32(2). |
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| 作者姓名： | 仝珂 李贺军 史小红 付前刚 李克智 |
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| 作者单位： | 西北工业大学超高温复合材料重点实验室炭/炭复合材料工程技术研究中心,西安,710072 |
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| 摘 要： | 采用原位生成法在C/C复合材料SiC内涂层表面制备了mullite(莫来石)-Si-Al2 O3抗氧化涂层.采用XRD、SEM分析了涂层的物相组成和微观结构,并测试了SiC/mullite-Si-Al2 O3复合涂层的抗氧化性能.结果表明,外涂层主要由mullite、Si和Al2O3三相组成;涂层致密无裂纹;SiC/mullite-Si-Al2 O3复合涂层在1500℃静态空气中等温氧化75 h后,试样失重仅为4.6%,防氧化性能明显优于单一的SiC内涂层.
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| 关 键 词： | 炭/炭复合材料 涂层 氧化 原位法 |
Investigation on microstructure and oxidation resistance of SiC/mullite-Si-Al_2O_3 coating for carbon/carbon composites |
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| TONG Ke,LI He-Jun,SHI Xiao-Hong,FU Qian-Gang,LI Ke-Zhi.Investigation on microstructure and oxidation resistance of SiC/mullite-Si-Al_2O_3 coating for carbon/carbon composites[J].Journal of Solid Rocket Technology,2009,32(2). |
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| Authors: | TONG Ke LI He-Jun SHI Xiao-Hong FU Qian-Gang LI Ke-Zhi |
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| Institution: | TONG Ke,LI He-Jun,SHI Xiao-Hong,FU Qian-Gang,LI Ke-Zhi (C/C Composites Research Center,Key Laboratory of Superhigh Temperature Composites,Northwestern Polytechnical University,Xian 710072,China) |
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| Abstract: | Mullite-Si-Al_2O_3 oxidation protective coating was prepared on the surface of SiC coated carbon-carbon composites by in-situ formation method.Microstructure and composition of the prepared SiC/mullite-Si-Al_2O_3 coating were studied by means of XRD and SEM.Oxidation resistance of the coating was tested.The results show that the outer coating consists mainly of the mullite, Si and Al_2O_3,and it is dense without crack.Weight loss of SiC/mullite-Si-Al_2O_3 is only 4.6%after oxidized for 75 h in static air at... |
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| Keywords: | carbon/carbon composites coating oxidation in-situ formation method |
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