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美国NASA的Glenn太空中心开发了一种用于把等离子喷涂或物理汽相沉积热障涂层结合到高温合金上的优良结合层的生产方法,并申请了专利。该方法的成功在于使用几种比较便宜的封箱扩散步骤把铪(Hf)和硅(Si)结合到涂层中提高氧化抗力。采用这种方法时,首先通过在1080℃封箱扩散4h在
The NASA Glenn Space Center in the United States has developed and patented a method for producing an excellent bond layer for the plasma spray or physical vapor deposition thermal barrier coating on superalloys. The success of this method lies in the incorporation of hafnium (Hf) and silicon (Si) into the coating to increase the oxidation resistance using several cheaper sealing and diffusion steps. Using this method, the first by diffusion at 1080 ℃ sealing 4h in