纯Ce及Fe-Ce合金在低氧压下的氧化

OXIDATION OF PURE Ce AND Fe-Ce ALLOY UNDER LOW OXYGEN PRESSURES

研究了纯Ｃｅ 和含１５％ Ｃｅ（ 质量分数，下同）的ＦｅＣｅ 合金在６００ ～８００ ℃低氧分压下的氧化．纯Ｃｅ 氧化后形成ＣｅＯ２ 的外氧化膜．而Ｆｅ１５Ｃｅ 则产生快速Ｃｅ 的内氧化， 且内氧化区的显微组织保持了原始合金的显微组织，在内氧化区的前沿没有观察到Ｃｅ 的贫化．

The oxidation of pure Ce and Fe\|Ce alloy containing 15%Ce(mass fraction) at low oxygen pressures was studied at 600～800℃. After oxidation pure Ce produced outer CeO 2 scale, but Fe\|15Ce alloy produced rapidly internal oxidation of Ce .The microstructures of the regions of internal oxidation followed closely those of the original alloys,while no cerium depletion was observed around the internal oxidation front.