Internal Oxidation of Some Pd-40Ag-1RE Alloys
来源期刊：Rare Metals1990年第1期
论文作者：Ning Yuantao Li Yongnian Dai Hong Institute of Precious Metals.Kunming,China
文章页码：30 - 33
摘 要：<正> The internal oxidation behavior of Pd-40Ag-1RE（RE=Sin,Eu,Gd,Y）alloy wires has been studied in air at 800～1200℃The dependence of internal oxidation depth ξ on reaction time t can be expressed asξ=Ktn,the reaction index n=0.50～0.75.The higher the oxidation temperature is.the larger the n value is.It means that the internal oxidation of wire sampls at high tem-perature deviates from parabola rule observed on plate sample.The activation energies of the studied alloys range over 120～160kJ/mol.The internal,oxidation process is controlled by the bulk diffusion of oxygen.
Ning Yuantao Li Yongnian Dai Hong Institute of Precious Metals.Kunming,China
摘 要：<正> The internal oxidation behavior of Pd-40Ag-1RE（RE=Sin,Eu,Gd,Y）alloy wires has been studied in air at 800～1200℃The dependence of internal oxidation depth ξ on reaction time t can be expressed asξ=Ktn,the reaction index n=0.50～0.75.The higher the oxidation temperature is.the larger the n value is.It means that the internal oxidation of wire sampls at high tem-perature deviates from parabola rule observed on plate sample.The activation energies of the studied alloys range over 120～160kJ/mol.The internal,oxidation process is controlled by the bulk diffusion of oxygen.
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