Diffusional Kinetics of Ordered V3Au and Disordered Au(V) Solid Solution Phases in a Binary V-Au System

IF 2 4区材料科学 Q4 CHEMISTRY, PHYSICAL

Journal of Phase Equilibria and Diffusion Pub Date : 2026-07-13 DOI:10.1007/s11669-026-01269-9

Sangeeta Santra

引用次数: 0

Abstract

Diffusion in the ordered V₃Au and disordered face-centred cubic solid-solution Au(V)_ss phases in the binary V-Au system is studied. Interdiffusion coefficients increase with increase in the Au content in Au(V)_ss due to increased pre-exponential factor and reduced migration barrier. Since the thermodynamic factor decreases with increasing Au content in Au(V)_ss, interdiffusion may likely be kinetically-driven. Integrated diffusion coefficients of V₃Au were determined with an activation energy of 87 ± 19 kJ/mol, indicating the possible dominance of grain boundary diffusion.

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二元V-Au体系中有序V3Au和无序Au(V)固溶相的扩散动力学

研究了二元V-Au体系中有序V3Au和无序面心立方固溶体Au(V)ss相的扩散。随着Au(V)ss中Au含量的增加，互扩散系数增大，这是由于指前因子的增加和迁移屏障的降低。由于热力学因素随着Au(V)ss中Au含量的增加而降低，相互扩散可能是动力学驱动的。测定了V3Au的积分扩散系数，活化能为87±19 kJ/mol，表明可能以晶界扩散为主。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Phase Equilibria and Diffusion 工程技术-材料科学：综合

CiteScore

2.50

自引率

7.10%

发文量

审稿时长

1 months

期刊介绍： The most trusted journal for phase equilibria and thermodynamic research, ASM International''s Journal of Phase Equilibria and Diffusion features critical phase diagram evaluations on scientifically and industrially important alloy systems, authored by international experts. The Journal of Phase Equilibria and Diffusion is critically reviewed and contains basic and applied research results, a survey of current literature and other pertinent articles. The journal covers the significance of diagrams as well as new research techniques, equipment, data evaluation, nomenclature, presentation and other aspects of phase diagram preparation and use. Content includes information on phenomena such as kinetic control of equilibrium, coherency effects, impurity effects, and thermodynamic and crystallographic characteristics. The journal updates systems previously published in the Bulletin of Alloy Phase Diagrams as new data are discovered.