Internal Oxidation of Some Pd-40Ag-1RE Alloys

被引：0
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作者：
Ning Yuantao Li Yongnian Dai Hong Institute of Precious Metals.Kunming
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来源：
RareMetals | 1990年 / 01期
关键词：
Pd; Ag; RE;
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摘要：
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=Kt~n,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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页码：30 / 33
页数：4
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