Calculation of sublimation with allowance for impurity diffusion
- Авторы: Zhukov A.I.1, Kravchenko A.I.1
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Учреждения:
- Kharkiv Institute of Physics and Technology National Scientific Center
- Выпуск: Том 53, № 6 (2017)
- Страницы: 648-653
- Раздел: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/158242
- DOI: https://doi.org/10.1134/S0020168517060164
- ID: 158242
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Аннотация
We have calculated the impurity distribution in a spherical material during sublimation. The solutions found depend on two dimensionless parameters: separation factor β and diffusional Peclet number Pe = wR0/(ρ1D), where w is the mass vaporization rate, R0 is the initial sphere radius, ρ1 is the density of the material, and D is the impurity diffusion coefficient. For the limiting cases Pe ≫ 1 and Pe < 1, we derived analytical expressions for the impurity distribution in the subliming material and for the average impurity concentrations in the residue and condensate as functions of time t or the degree of sublimation g(t). The present results can be used to optimize the dimensions of subliming materials and sublimation conditions.
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Об авторах
A. Zhukov
Kharkiv Institute of Physics and Technology National Scientific Center
Email: alex@krawa.net
Украина, Akademicheskaya vul. 1, Kharkiv, 61108
A. Kravchenko
Kharkiv Institute of Physics and Technology National Scientific Center
Автор, ответственный за переписку.
Email: alex@krawa.net
Украина, Akademicheskaya vul. 1, Kharkiv, 61108
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