On the determination of diffusion coefficients in multi-phase ternary couples

Journal Article · Fri Mar 01 04:00:00 EST 1991 · Acta Metallurgica; (United States)

DOI:https://doi.org/10.1016/0956-7151(91)90309-O· OSTI ID:7030434

Jan, C H; Swenson, D; Zheng, X Y; Lin, J C; Chang, Y A ^[1]

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1. Dept. of Materials Science and Engineering, Univ. of Wisconsin-Madison, Madison, WI (US)

In this paper a methodology is presented for determining the interdiffusion coefficients of phases formed in a ternary diffusion couple using the measured growth rates and the concentration profiles across the couple. Using this methodology the interdiffusion coefficients of the T-Ni{sub 3}GaAs phase were obtained from several GaAs/Ni couples. Assuming the cross-intrinsic diffusion coefficients to be negligible, relationships between intrinsic diffusion coefficients and interdiffusion coefficients were derived, and values were obtained for the three intrinsic diffusion coefficients of the T-phase. The intrinsic diffusivity for Ni was the largest and that for arsenic the smallest. These data were rationalized in terms of the structure of the T-phase.

• OSTI ID: 7030434
• Journal Information: Acta Metallurgica; (United States), Journal Name: Acta Metallurgica; (United States) Vol. 39:3; ISSN 0001-6160; ISSN AMETA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
360606* -- Other Materials-- Physical Properties-- (1992-)
ARSENIC COMPOUNDS
ARSENIDES
DIFFUSION
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
MEASURING METHODS
NICKEL ARSENIDES
NICKEL COMPOUNDS
PHASE STUDIES
PNICTIDES
TRANSITION ELEMENT COMPOUNDS