Study of the Structure of Oxide Interface in the Pt-Rh Alloy by AP-FIM
来源期刊：Rare Metals1992年第1期
论文作者：任大刚
文章页码：34 - 38
摘 要：<正> This paper reports the study of structure of oxide interface in Pt-Rh alloy by atom probe field ion micro-scope （AP-FIM） which is well suited for the study of atom distribution with atomic scale at the surface and in-terface of alloy. AP depth profiles show that oxide interface exist in the Pt-Rh alloy which consists of PtO,RhO, PrO2 and RhO2 . The mechanism of oxidation of the alloy is considered as that first oxygen moleculesadsorbed on-to the surface of alloy then dissociate into oxygen atoms （02→2O）. Consequently oxygen atomsdiffuse into interior through grain boundary forming oxide （M+O→MO）. When the concentration of oxygencontinuously increases the dioxide （MO+O→-MO2） forms.
任大刚
摘 要：<正> This paper reports the study of structure of oxide interface in Pt-Rh alloy by atom probe field ion micro-scope （AP-FIM） which is well suited for the study of atom distribution with atomic scale at the surface and in-terface of alloy. AP depth profiles show that oxide interface exist in the Pt-Rh alloy which consists of PtO,RhO, PrO2 and RhO2 . The mechanism of oxidation of the alloy is considered as that first oxygen moleculesadsorbed on-to the surface of alloy then dissociate into oxygen atoms （02→2O）. Consequently oxygen atomsdiffuse into interior through grain boundary forming oxide （M+O→MO）. When the concentration of oxygencontinuously increases the dioxide （MO+O→-MO2） forms.
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