Solute Field in Liquid Ahead of the Solid-Liquid Interface during Dendritic Solidification Incorporating Relaxation Effect

Xiang Zhong Jin; Hong Yang Wang; Ning Wang; Xiao Guang Lan; Shu Li

doi:10.4028/www.scientific.net/AMR.981.867

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The Preparation of Alq₃/CuPc Heterojunction Organic Electroluminesence Diodes
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Solute Field in Liquid Ahead of the Solid-Liquid Interface during Dendritic Solidification Incorporating Relaxation Effect
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 981Solute Field in Liquid Ahead of the Solid-Liquid...

Solute Field in Liquid Ahead of the Solid-Liquid Interface during Dendritic Solidification Incorporating Relaxation Effect

Abstract:

Through solving an extended Fick’s diffusion equation for the solidification front of a paraboloid of revolution, a generalized Ivantsov function is obtained. The relaxation effect of nonequilibrium liquid diffusion is taken into account. The solute profile in the interfacial region and in the bulk liquid during steady-state dendritic solidification is uniquely determined. It is concluded that the consideration of the relaxation effect and the diffuse interface of finite thickness which decreases with increasing of velocities are necessary for achieving the good model predictions.