| 硅钽含量对C/C复合材料SiC/TaSi_2复合涂层结构和抗氧化性能的影响 |
| |
| 引用本文： | 侯党社,李克智,李贺军,付前刚,张雨雷,李新涛. 硅钽含量对C/C复合材料SiC/TaSi_2复合涂层结构和抗氧化性能的影响[J]. 稀有金属材料与工程, 2009, 38(Z1) |
| |
| 作者姓名： | 侯党社 李克智 李贺军 付前刚 张雨雷 李新涛 |
| |
| 作者单位： | 西北工业大学,超高温结构复合材料国防科技重点实验室,陕西,西安,710072 |
| |
| 基金项目： | 国家重点基础研究发展规划(973计划) |
| |
| 摘 要： | 采用包埋技术在C/C复合材料表面制备SiC/TaSi2抗氧化复合涂层,通过恒温氧化实验以及X射线衍射分析、扫描电镜观察,研究了包埋粉料中硅钽含量对复合涂层微观结构和高温抗氧化性能的影响.结果表明,随着硅钽比的减小,复合涂层的厚度先增大后减小;硅钽比为5:1所制备的复合涂层具有相对较大的厚度和较为致密的结构,且TaSi2含量相对较高,体现出优良的抗氧化和抗热震性能,在1500℃氧化241.8 h和经过18次1500℃←室温急冷急热后,带有该涂层的C/C试样失重仅为1.04%.穿透性裂纹的形成是长时间氧化后涂层失效的主要原因.
|
| 关 键 词： | C/C复合材料 涂层 抗氧化 |
Effect of Si/Ta Ratio on the Microstructure and High Temperature Anti-Oxidation Property of SiC/TaSi_2 Coating for Carbon/Carbon Composites |
| |
| Hou Dangshe,Li Kezhi,Li Hejun,Fu Qiangang,Zhang Yulei,Li Xintao. Effect of Si/Ta Ratio on the Microstructure and High Temperature Anti-Oxidation Property of SiC/TaSi_2 Coating for Carbon/Carbon Composites[J]. Rare Metal Materials and Engineering, 2009, 38(Z1) |
| |
| Authors: | Hou Dangshe Li Kezhi Li Hejun Fu Qiangang Zhang Yulei Li Xintao |
| |
| Affiliation: | Hou Dangshe,Li Kezhi,Li Hejun,Fu Qiangang,Zhang Yulei,Li Xintao (National Key Laboratory of Thermostructure Composite Materials,Northwestern Polytechnical University,Xi'an 710072,China) |
| |
| Abstract: | A SiC/TaSi2 multilayer oxidation protective coating for carbon/carbon (C/C) composites was prepared by pack cementation. Effect of the content of Si and Ta in the second-step pack powders on the microstructure and high temperature anti-oxidation property of the multi-coating was studied by XRD,SEM and isothermal oxidation test. The results show that with the ratio of Si and Ta decreasing,the as-received multi-coating thickness first increases and then decreases. The multi-coating prepared at the ratio of 5:... |
| |
| Keywords: | C/C composites coating oxidation resistance |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
