Oxidation protection for carbon fibre composites
Oxidation protection for carbon fibre composites
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DOI：
10.1007/bf00357844
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发表时间：
1996-03
影响因子：
4.5
通讯作者：
M. Westwood;James D. Webster;Richard J. Day;F. Hayes;R. Taylor
中科院分区：
文献类型：
--
作者：
M. Westwood;James D. Webster;Richard J. Day;F. Hayes;R. Taylor
碳纤维增强陶瓷基复合材料是燃气轮机叶片等高温结构应用中很有前途的候选材料。然而，在400°C以上的氧化环境中，碳纤维会迅速氧化。因此，需要涂覆复合材料以防止其氧化。本文综述了碳纤维增强陶瓷的有效氧化保护系统的要求，并总结了近50年来为实现这一目标所做的工作。最有前途的涂层是那些由几个陶瓷层组成的涂层，这些陶瓷层设计用于防止侵蚀，剥落和腐蚀，此外还具有通过在暴露于氧气时形成玻璃相而自我修复的能力。
Carbon fibre-reinforced ceramic matrix composites are promising candidate materials for high-temperature structural applications such as gas turbine blades. In oxidizing environments at temperatures above 400°C, however, carbon fibres are rapidly oxidized. There is, therefore, a need to coat the composite in order to protect it against oxidation. This review identifies the requirements of an effective oxidation protection system for carbon fibre-reinforced ceramics and summarizes the work which has been carried out towards this goal over the last 50 years. The most promising coatings are those composed of several ceramic layers designed to protect against erosion, spallation and corrosion, in addition to possessing a self-healing capability by the formation of glassy phases on exposure to oxygen.