Conference paper

Unstable flow and solidification speed due to the interaction of thermocapillary and solutocapillary forces in directional solidification


Authors listSchwabe, D; Da, XD; Scharmann, A

Publication year1996

Pages483-488

JournalJournal of Crystal Growth

Volume number166

Issue number1-4

ISSN0022-0248

DOI Linkhttps://doi.org/10.1016/0022-0248(96)00128-5

Conference11th International Conference on Crystal Growth

PublisherElsevier


Abstract
During floating zone growth from a melt with a surface active impurity with segregation coefficient k(eff) < 1, solutocapillary forces arise which counteract thermocapillary ones. A hydrodynamic instability of the surface-tension-driven flow (Marangoni effect) due to these counteracting forces has been found experimentally and its mechanism is discussed in this paper. In contrast to the well-known passive growth oscillations due to hydrodynamic instabilities in the melt, growth and remelting of the crystal actively participate in this instability.



Citation Styles

Harvard Citation styleSchwabe, D., Da, X. and Scharmann, A. (1996) Unstable flow and solidification speed due to the interaction of thermocapillary and solutocapillary forces in directional solidification, Journal of Crystal Growth, 166(1-4), pp. 483-488. https://doi.org/10.1016/0022-0248(96)00128-5

APA Citation styleSchwabe, D., Da, X., & Scharmann, A. (1996). Unstable flow and solidification speed due to the interaction of thermocapillary and solutocapillary forces in directional solidification. Journal of Crystal Growth. 166(1-4), 483-488. https://doi.org/10.1016/0022-0248(96)00128-5



Keywords


CONVECTION

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