摘要
研究了纯 Ｃｏ、 Ｃｏ－２Ｃｅ及 Ｃｏ－５Ｃｅ合金在 ６００～８００ ℃（的温度下在）空气中的氧化行为．纯Ｃｏ的氧化基本符合抛物线规律．Ｃｏ－Ｃｅ合金的氧化过程近似由二个抛物线阶段组成．Ｃｏ－Ｃｅ合金表面的氧化膜由 Ｃｏ的氧化物和 ＣｅＯ２组成．含Ｃｅ氧化物继承了原始合金中的金属间化合物相Ｃｏ１７Ｃｅ２的分布形貌Ｃｏ-５Ｃｅ合金的氧化比 Ｃｏ-２Ｃｅ合金快合金内氧化严重还讨论了 Ｃｏ-Ｃｅ合金的氧化机制．
The oxidation of Co, Co-2Ce and Co-5Ce at 600-800 in air has been studied. The oxidation of pure Co followed the parabolic oxidation rate law at the three temperatures. The oxidation process for Co-Ce alloys consisted of two approximately parabolic stages. The oxide scale grown on the Co-Ce alloys was composed of Co oxides and CeO2. The Ce-containing oxides followed the distribution of the original intermetallic compound Co17Ce2 in the alloys. The Co-5Ce alloy was oxidized faster than the Co-2Ce alloy. The alloys suffered from serious internal oxidation. The oxidation mechanism of the Co-Ce alloys was also discussed.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2000年第B01期8-12,共5页
Chinese Journal of Materials Research
基金
国家自然科学基金!59571056
