Abstract
Driving forces and diffusional mechanisms of a pore shrinkage in a crystal, containing other sources (sinks) of vacancies are considered. The finite length of a diffusional path of an excess vacancy in the bulk of a crystal and the difference in the atomic chemical potential on a plain surface and that on the considered sources in the bulk of a crystal are taken into account as is the finite rate of a formation of vacancies on the surface of a pore. An expression describing the duration of the shrinkage of a spherical pore is obtained. This interval is essentially (by 30 times and more) smaller than that for a pore in an ideal crystal.
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References
Y. E. Geguzin, “Fizika Spekaniya” (Nauka, Moscow, 1967).
G. C. Kuczynski andIchinose Hirouki, Z.Metallkde. 69 (1978) 635.
V. V. Slyozov,Fiz. Tverdogo Tela 9 (1967) 1187.
Y. V. Kornyushin, “Yavleniya Perenosa v Realnykh Kristallakh vo Vneshnikh Polyakh” (Naukova Dumka, Kiev, 1981).
J. V. Kornjušin, in “YII Intern. pulvermetallurgische Tagung in der DDR” (ZFW, Dresden, 1981) Bd 2, S. 139.
M. N. Belyakova, in “Fizika Protsessov Zalechivaniya Makroi Mikrodefektov v Kristallakh” (Preprint IMPh. N 9, Academy of Science of the Ukrainian SSR, Kiev, 1978) p. 14.
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Kornyushin, Y.V. On the theory of diffusional shrinkage of a pore in real crystals. J Mater Sci 17, 3423–3426 (1982). https://doi.org/10.1007/BF00752186
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DOI: https://doi.org/10.1007/BF00752186