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为了提高燃气涡轮发动机中涡轮部件在高温、长时间及腐蚀性气氛中工作的性能,国内外广泛采用渗铝防护的方法来提高耐热合金零件的抗高温氧化及抗燃气腐蚀能力。渗铝所用的工艺过去大多采用“固渗法”,是粉尘作业,劳动条件很差,生产效率也较低,而且不容易在零件的选择部位进行局部渗铝。为此,普遍开展了改进渗铝工艺的研究。新的渗铝方法很多,如料浆法、电泳法、真空蒸镀法、汽渗法、熔融铝液浸法、熔融盐电解法等等。其
In order to improve the performance of turbine components in gas turbine engines operating at high temperature, long time and corrosive atmosphere, aluminizing protection is widely used at home and abroad to improve the high temperature oxidation resistance and gas corrosion resistance of heat resistant alloy components. Alumina used in the past, most of the technology used in the “solid infiltration method” is dust operations, poor working conditions, production efficiency is low, and not easy to select part of the parts of the local aluminization. To this end, the general study of improving the aluminizing process. New aluminizing many ways, such as slurry method, electrophoresis, vacuum evaporation, gas seepage, molten aluminum immersion, molten salt electrolysis and so on. its