DIFFUSION AND TRAPPING OF OXYGEN IN REFRACTORY-METAL ALLOYS

被引：51

作者：

LAUF, RJ

ALTSTETTER, CJ

机构：

[1] UNIV ILLINOIS,DEPT MET & MIN ENGN,URBANA,IL 61801

[2] UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801

来源：

ACTA METALLURGICA | 1979年 / 27卷 / 07期

关键词：

D O I：

10.1016/0001-6160(79)90133-0

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The diffusion coefficient of oxygen has been measured in niobium, vanadium and several dilute substitutional niobium alloys. Measurements were made over the range of 600-1150°C (873-1423 K) using a solid electrolytic cell technique. Oxygen diffusivity in the alloys was found to be less than in pure niobium. This is interpreted as being due to trapping of oxygen atoms by the substitutional solute atoms. The estimated substitutional-oxygen binding or 'trap' energies (in eV) for the solutes investigated are: Ta, 0.3 ± 0.1; V, 0.55 ± 0.05; Ti, 0.7 ±0.1; Zr, 0.7 ± 0.05. © 1979.

引用

页码：1157 / 1163

页数：7

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