H. Narayanan, G. Youngquist, J. Estrin
Feb 1, 1982
Citations
0
Influential Citations
10
Citations
Journal
Journal of Colloid and Interface Science
Abstract
Abstract Growth of potassium aluminum sulfate crystals from aqueous solution under nonuniform conditions was studied using an impinging jet technique. Variation of supersaturation along the crystal surface resulted in breakdown of uniform growth as predicted theoretically. Typically, a plateau was formed, with inclusions surrounding a central inclusion free region. The size of the inclusion free region, where growth is uniform, was determined by the jet Reynolds number, supersaturation, and temperature. The surface features of this region suggest growth by step propagation with the source of steps at the jet stagnation point. Data for the growth coefficient C were obtained from C = G/σmin, where G is the experimentally measured growth rate and σmin is the supersaturation at the breakdown point obtained from transport modeling. Good agreement with the results of others was obtained.