| 引用本文: | 于海蛟,周新贵,黄伯云,等.SiC纤维表面CVD SiC涂层对其单丝强度的影响.[J].国防科技大学学报,2008,30(2):33-36.[点击复制] |
| YU Haijiao,ZHOU Xingui,HUANG Boyun,et al.Effect of CVD SiC Surface-coating on the Single Fiber Strength of SiC Fibers[J].Journal of National University of Defense Technology,2008,30(2):33-36[点击复制] |
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| SiC纤维表面CVD SiC涂层对其单丝强度的影响 |
| 于海蛟1, 周新贵1, 黄伯云2, 羊建高3, 黄泽兰3 |
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(1.国防科技大学 航天与材料工程学院，湖南 长沙 410073;2.中南大学 粉末冶金国家重点实验室，湖南 长沙 410083;3.章源钨业，江西 崇义 341300)
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| 摘要: |
| 采用化学气相沉积(CVD, Chemical Vapor Deposition)工艺在KD-I型SiC纤维表面制备了SiC涂层，选择2h、4h、6h和8h四个时间点研究了沉积时间对纤维性能的影响。结果表明：具有CVD SiC涂层的SiC纤维较无涂层的纤维来说强度有所下降；在所研究的沉积时间范围内，随着沉积时间的增加，涂层的厚度有所增加，涂层由不连续的岛状转变为连续层状，纤维的单丝强度出现了先升后降的趋势。 |
| 关键词: 化学气相沉积 碳化硅纤维 纤维涂层 |
| DOI： |
| 投稿日期：2007-11-20 |
| 基金项目:国家自然科学基金资助项目(50672128) |
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| Effect of CVD SiC Surface-coating on the Single Fiber Strength of SiC Fibers |
| YU Haijiao1, ZHOU Xingui1, HUANG Boyun2, YANG Jiangao3, HUANG Zelan3 |
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(1.College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;2.State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;3.Zhangyuan Tungsten Co. Ltd., Chongyi 341300, China)
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| Abstract: |
| The SiC coating was deposited on the SiC fiber through CVD routine, and the effect of deposition time on the fiber performances was investigated at initializations such as 2h, 4h, 6h and 8h. The results indicate that the fiber without coating showed better mechanical properties than those with coatings. The coating, of which the thickness increased with the lengthening of deposition time, altered from island appearance to continuous layer appearance at the same time. Furthermore, the single fiber strength displayed a raise-and-down tendency. |
| Keywords: chemical vapor deposition (CVD) silicon carbide (SiC) fiber fiber coating |
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