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首页> 外文期刊>Boletin de la Sociedad Espanola de Ceramica y Vidrio >C/SiC composites for high temperature structural applications. Part I: thermodynamical and chemical stability
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C/SiC composites for high temperature structural applications. Part I: thermodynamical and chemical stability

机译：用于高温结构应用的C / SiC复合材料。第一部分：热力学和化学稳定性

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摘要

The development of aero-engine and aircraft industry is aimed to hypersonic technology efficiency enhancements and pollutant emission reductions. This objective can only be reached by increasing the operating temperatures, utilising new materials which mechanical proper-ties are retained up to high temperatures. SiC matrix composites reinforced with carbon fibres (C/SiC) are good examples with very good bending and thermal shock resistance at temperatures up to 1600 deg C as well as low density. However, the fact which currently inhibits the application of these materials is the high oxidation rate of carbon fibres at temperatures above 450 deg C. In the first part of the paper, a review of the most important properties and oxidation mechanisms of C and SiC has been carried out. The influence of each material disposition, individually and as composite, has been analysed.
机译：航空发动机和飞机工业的发展旨在提高超音速技术的效率并减少污染物排放。该目标只能通过使用新材料来提高工作温度来实现，这些新材料在高温下仍可保持机械性能。用碳纤维（C / SiC）增强的SiC基复合材料是很好的例子，在高达1600℃的温度下具有很好的抗弯曲性和抗热震性以及低密度。但是，目前阻碍这些材料应用的事实是碳纤维在450摄氏度以上的温度下具有很高的氧化速率。在本文的第一部分，对C和SiC最重要的性能和氧化机理的综述进行了。已经分析了每种材料配置的影响，这些影响分别是复合的。

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