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Kinetics and Mechanisms of Intermetallic Growth by Bulk Interdiffusion

Published online by Cambridge University Press:  10 February 2011

L.N. Paritskaya ,
Yu.S. Kaganovskii  and
V.V. Bogdanov
L.N. Paritskaya
Affiliation:
Department of Crystal Physics, Kharkov State University, 310077, Kharkov, Ukraine
Yu.S. Kaganovskii
Affiliation:
The Jack and Pearl Resnick Istitute of Advanced Technology, Department of Physics, Bar-Ilan University, Ramat-Gan 52900, Israel
V.V. Bogdanov
Affiliation:
Department of Crystal Physics, Kharkov State University, 310077, Kharkov, Ukraine
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Abstract

Kinetic properties of γ-phase (Cu5Zn8) growth in the binary system Cu-Zn were studied at 160-270°C. It has been found that γ-phase grows in diffusional-kinetic regime. Both kinetic coefficients of interfacial reaction rate β and diffusion coefficients D have been determined taking into account Kirkendall effect. Arrhenius equations for the kinetic and diffusion coefficients have been obtained, with the high values of “dynamic” diffusion coefficients and low activation energies for both diffusion (Q D) and interfacial reaction (Q β). The mechanism of Zn diffusion in non-stoichiometric Cu5Zn8 phase is discussed.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 527: Symposium Z – Diffusion Mechanisms in Crystalline Materials , 1998 , 233
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

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