| C/C复合材料SiC/ZrB_2-MoSi_2复合涂层的抗氧化机制 |
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| 引用本文： | 曾毅,张武装,熊翔.C/C复合材料SiC/ZrB_2-MoSi_2复合涂层的抗氧化机制[J].复合材料学报,2010,27(3):50-55. |
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| 作者姓名： | 曾毅 张武装 熊翔 |
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| 作者单位： | 中南大学,粉末冶金国家重点实验室,长沙,410083 |
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| 基金项目： | 国家自然科学基金创新群体基金 |
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| 摘 要： | 采用包埋法和刷涂法在C/C复合材料基体上制备SiC/ZrB2-MoSi2抗氧化涂层,并利用SEM和XRD等测试手段对抗氧化涂层的组织结构、抗氧化性能和抗氧化机制进行了研究。研究结果表明,SiC内涂层可有效解决外涂层ZrB2-MoSi2与C/C复合材料基体间热膨胀系数差异较大的难题。刷涂法制备的ZrB2-MoSi2外涂层虽然有大量的龟裂纹,但涂层试样在1500℃空气中氧化10 h,失重率仅为3.58%,涂层具有很好的自愈合能力,表现出优异的高温抗氧化性能和抗热震性能。
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| 关 键 词： | C/C 复合材料 刷涂法 SiC/ZrB2-MoSi2涂层 抗氧化 |
| 收稿时间： | 2009-06-26 |
| 修稿时间： | 2009-10-20 |
Anti-oxidation mechanisms of the SiC/ZrB_2-MoSi_2 coating on the carbon/carbon composites |
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| ZENG Yi,ZHANG Wuzhuang,XIONG Xiang.Anti-oxidation mechanisms of the SiC/ZrB_2-MoSi_2 coating on the carbon/carbon composites[J].Acta Materiae Compositae Sinica,2010,27(3):50-55. |
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| Authors: | ZENG Yi ZHANG Wuzhuang XIONG Xiang |
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| Affiliation: | (State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) |
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| Abstract: | The anti-oxidation coatings of SiC/ZrB2-MoSi2 on the carbon/carbon composites were prepared by pack cementation and slurry painting.The coating microstructure,performance and the anti-oxidation mechanisms were investigated by SEM,XRD,etc.The results show that the inner coating of SiC can eliminate the thermal expansion mismatch between carbon/carbon composites and the outer coating of ZrB2-MoSi2.The coating weight loss of ZrB2-MoSi2 prepared by slurry painting with a lot of craze cracks is 3.58% after 10 h ... |
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| Keywords: | C/ C composite slurry painting " target="_blank">2-MoSi2coating zz')" href="#"> SiC/ZrB2-MoSi2coating anti-oxidation |
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