研究了底温高活性（ＨＴＨＡ）Ｐｄ－Ｎｉ－Ａｌ涂层在１０５０℃人的循环氧化和Ｎａ２ＡＳＯ４熔盐中的热腐蚀结果表明，Ｐｄ－Ｎｉ－Ａｌ涂层表面生成一层致密的氧化膜，抗热腐蚀性能接近Ｐｔ－Ａｌ涂层，优于单渗铝涂层，初步分析了Ｐｄ－Ｎｉ－Ａｌ涂层的高温腐蚀机理。
The behavior of cyclic oxidation at 1323K and hgh temperature hot cormsion in NaZS4 melt at 1173K of Pd-Ni-A1 coatings was studied, The coating was prepared by lm-temperature-high-activitypack aluminizing technolcgy on nickel-based superalloy M.8 with a thin layer of pre-electroplated Pd-Ni alloy. The Pd-Ni-Al coating showed excellent perfmce in cyclic oxidation as well as in NaZS4 hot cormion tests. Palladium not only stabilizes the protective P-phase, but also btically increases the hot co~l~sion resistance of coatings.
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