Multi-functional SiC/Al composites for aerospace applications

被引：138

作者：

National Key Laboratory of Advanced Composites, Beijing Institute of Aeronautical Materials, Beijing 100095, China ^{[1
]}

不详 ^{[2
]}

机构：

[1] National Key Laboratory of Advanced Composites, Beijing Institute of Aeronautical Materials

[2] Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences

来源：

Chin J Aeronaut | 2008年 / 6卷 / 578-584期

关键词：

Aerospace applications; Aluminum; Composites; Infiltration; Multi-function; Sic;

D O I：

10.1016/S1000-9361(08)60177-6

中图分类号：

学科分类号：

摘要：

Multi-functional Al-matrix composites with high volume fraction (55%-57%) of SiC particles are produced with the new pressureless infiltration fabrication technology. X-ray detection and microscopic observation display the composites which are macroscopically homogeneous without porosity. The investigation further reveals that the SiC/Al composites possess low density (2.94 g/cm 3), high elastic modulus (220 GPa), prominent thermal management function as a result of low coefficient of thermal expansion (8×10 -6 K-1) and high thermal conductivity (235 W/(m-K)) as well as unique preventability of resonance vibration. By adopting a series of developed techniques, the multi-functional SiC/Al composites have managed to be made into near-net-shape parts. Many kinds of precision components of space-based optomechanical structures and airborne optoelectronic platform have been turned out. Of them, several typical products are being under test in practices.

引用

页码：578 / 584

页数：6

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