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本研究所用的K_3镍基高温合金W5.1、Mo4.1、Ti 2.6、Al5.5、Cr11、Co5.5)铬的含量较低,虽然其抗氧化性能尚好,但对苛刻的热腐蚀较为敏感。为了提高抗腐蚀能力,以往国内采用料浆法或粉末包装法的渗铝工艺。为了改善铝化物渗层的抗热蚀能力,增高渗层中铬含量,我们对比了“一步
The K_3 nickel-base superalloys W5.1, Mo4.1, Ti 2.6, Al5.5, Cr11, Co5.5) used in this study have a relatively low chromium content. Although their oxidation resistance is still good, the severe hot corrosion sensitive. In order to improve the anti-corrosion ability, in the past using slurry method or powder coating method aluminizing process. In order to improve the anti-corrosion ability of the aluminized layer and increase the chromium content in the layer, we compared the ”one step