Document Type

Article

Publication Date

2-1991

Journal or Book Title

Metallurgical Transactions B

Volume

22

Issue

1

First Page

21

Last Page

26

DOI

10.1007/BF02672522

Abstract

A method for determination of liquid phase diffusion coefficients along the liquidus curve in a binary alloy is presented. The technique is similar to that proposed by Watson and Hunt [1] but is more applicable to a larger selection of alloy systems. The technique utilizes temperature gradient zone melting (TGZM) to produce compositional adjustments along the length of a stationary sample placed in a temperature gradient. Diffusion coefficients as a function of position and, hence, temperature in the sample are calculated from measurement of the compositional changes occurring during TGZM and the temperature profile in the alloy. Since coefficients can be measured over a wide range of temperatures, the activation energy for diffusion can also be determined. The technique is demonstrated for a Cu-85 wt pct Sn alloy.

Comments

Copyright 1991 ASM International. This paper was published in Metallurgical Transactions B 22 (1991): 21–26, and is made available as an electronic reprint with the permission of ASM International. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplications of any material in this paper for a fee or for commercial purposes, or modification of the content of this paper are prohibited.

Copyright Owner

ASM International

Language

en

File Format

application/pdf

Included in

Metallurgy Commons

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