INFLUENCE OF CALCIUM-SULFATE MOLAR RATIO ON THE GROWTH-RATE OF CALCIUM-SULFATE DIHYDRATE AT CONSTANT SUPERSATURATION

被引：60
|
作者：
ZHANG, JW
NANCOLLAS, GH
机构：
[1] Department of Chemistry, State University of New York at Buffalo, Buffalo
来源：
JOURNAL OF CRYSTAL GROWTH | 1992年 / 118卷 / 3-4期
关键词：
D O I：
10.1016/0022-0248(92)90073-R
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The growth kinetics of calcium sulfate dihydrate (CSD) has been investigated using the constant composition method over a range of calcium/sulfate molar ratios, r, in supersaturated solutions (0.17 < r < 5.0, at ionic strength, I = 0.500m with potassium chloride as the supporting electrolyte and 0.08 < r < 10.0 at I = 1.00m in sodium chloride medium). In spite of constancy of ion activity product, the rate increases with decreasing Ca/SO4 molar ratio, indicating that the rate of crystal growth is not merely a function of the thermodynamic driving forces but also depends upon the relative concentrations and characteristics of individual lattice ions.
引用
收藏
页码：287 / 294
页数：8
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