Multi-functional SiC/AI Composites f

Multi-functional SiC/AI Composites for Aerospace Applications

Multi-functional Al-matrix composites with high volume fraction (55%-57%) of SiC particles are produced with the new pres-sureless infiltration fabrication technology, X-ray detection and microscopic observation display the composites which are macroscopi-tally homogeneous without porosity. The investigation further reveals that the SiC/Al composites possess low density (2.94 g/cm3), high elastic modulus (220 GPa), prominent thermal management function as a result of low coefficient of thermal expansion (8 × 10-6 K-1) and techniques, the multi-functional SiC/Al composites have managed to be made into near-net-shape parts. Many kinds of precision com-ponents of space-based optomechanical structures and airborne optoelectronic platform have been turned out. Of them, several typical products are being under test in practices.

作 者： Cui Yan Wang Lifeng Ren Jianyue   作者单位： Cui Yan,Ren Jianyue(National Key Laboratory of Advanced Composites, Beijing Institute of Aeronautical Materials, Beijing 100095, China)

Wang Lifeng(Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China) 

刊 名： 中国航空学报（英文版）  ISTIC 英文刊名： CHINESE JOURNAL OF AERONAUTICS  年，卷(期)： 2008 21(6)  分类号： V2  关键词： composites   multi-function   infiltration   SiC   aluminum   aerospace applications  

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