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研究了表面施加含有不同量Ｙ２Ｏ３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单一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的生长机制由阳离子向外扩散为主转变为阴离子向内扩散为主．通过表面施加含Ｙ的氧化物薄膜产生了全面的“活性元素效应”
The effect of surface Cr2O3 and Al2O3 films containing different amounts of Y2O3 on the oxidation of Cr2O3-forming alloy Fe25Cr at 1000 ℃ and 104PaO2 was studied. As a result, it was found that the Y oxide-containing thin film significantly reduced the growth rate of the Cr2O3 layer, and the effect of the Y-containing composite oxide thin film was greater than that of the single Y2O3 thin film. At this point, Cr2O3 layer surface morphology has undergone major changes. Indirect evidence indicates that the growth mechanism of Cr2O3 mainly changes from the outward diffusion of cations to the inward diffusion of anions. The overall “active element effect” results from the application of a Y-containing oxide film on the surface