摘要
研究了纯Ｙ和两种Ｆｅ－Ｙ合金在６００～８００℃０．１ ＭＰａ 纯氧中的氧化．两种合金形成的外氧化膜包括Ｆｅ、Ｙ 的氧化物及其复合氧化物，并发生了Ｙ 的内氧化．内氧化区继承了原始合金的显微组织形貌，且内氧化区前沿无贫Ｙ现象．这些特点是Ｙ在基体金属中低的溶解度和合金中存在不同于基体金属α－Ｆｅ 的金属间化合物相的直接结果．
The oxidation of two iron\|based alloys containing 15wt% and 30wt% yttrium as well as pure yttrium has been studied in pure oxygen of 0.1 MPa.Both alloys formed an external scale containing a mixture of iron and yttrium oxides and double Fe\|Y oxides.A region of internal oxidation of yttrium was formed in the alloys.The microstructure of the internal oxidation region followed closely that of the original alloys and there was no any yttrium depletion in the internal oxidation region.These results are examined by taking into account the limited solubility of yttrium in iron and the presence of intermetallic compounds in the alloy.
出处
《腐蚀科学与防护技术》
CAS
CSCD
1999年第6期335-340,共6页
Corrosion Science and Protection Technology
基金
国家杰出青年科学基金
