研究了表面施加含有不同量Ｙ２Ｏ２的Ｃｒ２Ｏ３和Ａｌ２Ｏ３薄膜对Ｃｒ２Ｏ３形成合金Ｆｅ２５Ｃｒ在１０００℃、１０４ＰａＯ２环境中高温氧化的作用。结果发现含Ｙ氧化物薄膜明显降低了Ｃｒ２Ｏ３层的生长速度，而且含Ｙ复合氧化物薄膜的作用大于 Ｙ２Ｏ３薄膜，此时，Ｃｒ２Ｏ３层表面形貌发生了较大的变化，间接证据表明Ｃｒ２Ｏ３的生长机制的由阳离子向外扩散为主转变阴离子向内扩散为 主，通过表面施加含Ｙ的氧化物薄膜产生
The effects of surface-applied CrzOJ and AlZOS thin oxide films containing vari- ous concentrations of Y20s on the high-temperature oxidation behaviour of an ordinary CrzOB former, FeZSCr, have been studied at lOOOC in 10' Pa oxygen. The thin oxide films with Y20, gave rise to a great decrease in the growth rate of the Cr,OS scale and the effect of mul- ti-component films was stronger than the single YIOS film. The morphology of Cr,O, scales changed apparently. The indirect evidences showed that the growth mechnism of the Cr,03 scale converted from predominantly cation diffusing outwards to predominantly anion diffus- ing inwards. A full reactive element effect(REE1 has been developed by the surface-applied thin oxide films with yttrium.
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