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Diffusion Dominated Process for the Crystal Growth of a Binary Alloy by Wen-Rui Hu; Akira Hirata; Shin-ichi Nishizawa is a Engineering article available to read on EtoBox.

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The pure diffusion process has been often used to study the crystal growth of a binary alloy in the microgravity environment. In the present paper, a geometric parameter, the ratio of the maximum deviation distance of curved solidification and melting interfaces from the plane to the radius of the crystal rod, was adopted as a small parameter, and the analytical solution was obtained based on the perturbation theory. The radial segregation of a diffusion dominated process was obtained for cases of arbitrary Peclet number in a region of finite extension with both a curved solidification interface and a curved melting interface. Two types of boundary conditions at the melting interface were analyzed. Some special cases such as infinite extension in the longitudinal direction and special range of Peclet number were reduced from the general sohtion and discussed in detail.

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Author

Wen-Rui Hu; Akira Hirata; Shin-ichi Nishizawa

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-0248)

Published

1996

Language

EN

Field

Engineering (Physical Sciences)