Fe_3Al的抗高温氧化和耐热腐蚀性能

High Temperature Oxidation and Corrosion Resistance of Fe_3Al

在７００℃与８５０℃的高温下，Ｆｅ＿３Ａｌ金属间化合物表面形成了Ａｌ＿２Ｏ＿３保护膜，使其抗氧化性能远优于不妨钢，２％Ｃｒ（原子百分比）加入Ｆｅ＿３Ａｌ会导致氧化过程初期氧化速率的增高，在熔融的硫酸盐和高压锅炉的烟气中，Ｆｅ＿３Ａｌ的耐热腐蚀性能优于高温合金ＧＨ１３２．

At high temporature between 700℃ to 850℃,a protective film of Al2O3 forms at the sur-face of Fe3Al intermetallics, so that Fe3Al is more oxidation resistance than stainless steels,Additionof 2%Cr to Fe3Al results in the increase of oxidation rate at the initial stage of oxidation,In melted sulphates or smoke of high pressure boileres,Fe3Al has higher corrosion resistance than the superalloyGH132.