| 引用本文: | 许永平,程海峰,陈朝辉,等.一种新型CVD铁涂层吸波纤维.[J].国防科技大学学报,2004,26(2):21-24.[点击复制] |
| XU Yongping,CHENG Haifeng,CHEN Zhaohui,et al.New Microwave-absorbing Fibers with CVD Iron Coating[J].Journal of National University of Defense Technology,2004,26(2):21-24[点击复制] |
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| 一种新型CVD铁涂层吸波纤维 |
| 许永平, 程海峰, 陈朝辉, 唐耿平 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 利用Fe(CO)5受热分解，以CVD方法在SiC纤维表面涂覆单质铁的涂层。研究表明，涂层的引入对SiC纤维力学性能基本没有损伤；纤维依靠涂层导电，其电阻率显著降低；改变工艺条件，可以在较大范围内调节涂层纤维的介电常数，同时也引入了磁损耗机制；采用较低的沉积温度和较高的载气流速，可以提高介电常数和磁导率，同时有好的频散效应。 |
| 关键词: 碳化硅纤维 羰基铁 化学气相沉积法 涂层 电磁参数 |
| DOI： |
| 投稿日期：2003-09-20 |
| 基金项目:国防科技大学预研资金项目 |
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| New Microwave-absorbing Fibers with CVD Iron Coating |
| XU Yongping, CHENG Haifeng, CHEN Zhaohui, TANG Gengping |
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(College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Silicon carbide fibers were coated with iron (Fe) via the chemical vapor deposition (CVD) method. No obvious changes were observed for the silicon carbide fibers' tension while the coating process continued, but the strength of the iron-coated fiber declined accordingly as a result of the increased diameter. The resistivity decreased greatly. The dielectric constant of the iron-coated fibers could be adjusted in a wide range under different process conditions. Magnetic loss was introduced due to the inherent property of the iron. The dielectric constant and magnetic permeability could be improved under lower depositing temperature and higher flow rate of carrier gas. |
| Keywords: silicon carbide fiber carbonyl iron chemical vapor deposition method coating electromagnetic parameters |
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