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首页> 外文期刊>Physical review, E. Statistical physics, plasmas, fluids, and related interdisciplinary topics >Concentration dependence of solution shear viscosity and solute mass diffusivity in crystal growth from solutions
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Concentration dependence of solution shear viscosity and solute mass diffusivity in crystal growth from solutions

机译：溶液中晶体生长中溶液剪切粘度和溶质质量扩散率的浓度依赖性

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摘要

The physical properties of a supersaturated binary solution such as its density D, shear viscosity r, and solute mass diffusivity D are dependent on the solute concentration c: p=p(c), n = n(c), and D =D(c). The diffusion boundary layer equations related to crystal growth from solution are derived for the case of natural convection with a solution density, a shear viscosity, and a solute diffusivity that are all dependent on solute concentration. The solution of these equations has demonstrated the following, (a) At the vicinity of the saturation concentration cs the solution shear viscosity 17 depends on p as 7n = 7f(ps )piy2(cs). This theoretically derived result has been verified in experiments with several aqueous solutions of inorganic and organic salts, (b) The maximum solute mass transfer towards the growing crystal surface can be achieved for values of c where the ratio of d ln[D(c)/dc] to d In [n(c)/dc)] is a maximum.
机译：过饱和二元溶液的物理性质（例如密度D，剪切粘度r和溶质质量扩散率D）取决于溶质浓度c：p = p（c），n = n（c）和D = D（ C）。对于自然对流的情况，导出了与溶液中晶体生长相关的扩散边界层方程，其中溶液密度，剪切粘度和溶质扩散率均取决于溶质浓度。这些方程式的解证明了以下内容：（a）在饱和浓度cs附近，溶液剪切粘度17取决于p，为7n = 7f（ps）piy2（cs）。从理论上得出的结果已在几种无机和有机盐水溶液的实验中得到验证，（b）对于c值，可以达到向生长晶体表面的最大溶质传质，其中d ln [D（c） / dc]至d In [n（c）/ dc）]为最大值。

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