| 化学气相沉积层状BCx/SiC涂层自愈合机制 |
| |
| 引用本文： | 张伟华,成来飞,张立同,刘永胜,杨文彬. 化学气相沉积层状BCx/SiC涂层自愈合机制[J]. 复合材料学报, 2013, 30(3): 125-132 |
| |
| 作者姓名： | 张伟华 成来飞 张立同 刘永胜 杨文彬 |
| |
| 作者单位： | 西北工业大学 超高温结构复合材料重点实验室, 西安 710072 |
| |
| 基金项目： | 高等学校学科创新引智计划(B08040);国家自然科学基金(51002120;51032006) |
| |
| 摘 要： | 采用化学气相沉积法(chemical vapor deposition, CVD)在SiC上制备了BCx涂层, 研究了静态空气条件下BCx的氧化行为, 并获得BCx氧化的动力学参数, 对裂纹的愈合时间进行了预测。采用压痕法, 在BCx/SiC层状结构中预制微裂纹, 以观察B2O3玻璃相对裂纹的愈合情况。通过扫描电镜(SEM)对裂纹的愈合情况进行观察, 结果表明, 理论预测结果与实验验证能够很好地吻合。
|
| 关 键 词： | 化学气相沉积 BCx 涂层 氧化行为 自愈合 机制 |
| 收稿时间： | 2012-06-11 |
Self-healing mechanics of layered BCx/SiC coating by CVD method |
| |
| ZHANG Weihua,CHENG Laifei,ZHANG Litong,LIU Yongsheng,YANG Wenbin. Self-healing mechanics of layered BCx/SiC coating by CVD method[J]. Acta Materiae Compositae Sinica, 2013, 30(3): 125-132 |
| |
| Authors: | ZHANG Weihua CHENG Laifei ZHANG Litong LIU Yongsheng YANG Wenbin |
| |
| Affiliation: | National Key Laboratory of Thermostructure Composites Materials, Northwestern Polytechnical University, Xi'an 710072, China |
| |
| Abstract: | BCx was prepared on SiC by chemical vapor deposition (CVD) method. Oxidation behavior of BCx was investigated and the kinetic parameters of BCx oxidation were obtained under static air. The self-healing time of the cracks pre-prepared in the layered BCx/SiC structure was predicted. SEM was used to observe the self-healing of the cracks. The results show that the predicted time is in good agreement with the experimental results. |
| |
| Keywords: | CVD BCx coating oxidation behavior self-healing mechanics |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《复合材料学报》浏览原始摘要信息 |
|
点击此处可从《复合材料学报》下载全文 |
|
