溶胶-凝胶方法是一种制备氧化物涂层的简单方法.在不同基体上，采用溶胶-凝胶法可以制备连续的对基体起保护作用的SiO2、Al2O3、ZrO2及它们间复合的涂层.本文系统介绍了溶胶凝胶过程的特点、原理，着重介绍溶胶凝胶法制备抗氧化性涂层的工艺过程，分析了该方法存在的缺点，指出未来要解决的问题.并简单介绍了一种新型无氧溶胶-凝胶制备陶瓷涂层技术.
Sol-Gel processing is one of the simplest techniques for preparation of compound coatings.Continuous coatings of SiO2、Al2O3、 ZrO2 and their compounds can be prepared by Sol-Gel process on different substrates.In this paper,the characters and principle of Sol-Gel process and the technological process of the Sol-Gel derived high temperature oxidation resistant coatings have been introduced systemically,and the disadvantages of this technique have also been pointed out.It is suggested that the adherence strength betweenthe coatings and substrates and cracking of the coatings should be investigated emphatically in the future.And Si－C－N coating derived from a novel non-oxide Sol-Gel processing has been introduced briefly.
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