Four-component reciprocal system Na,K∥F, CO3, WO4

被引：0
|
作者：
Zh. A. Kochkarov
机构：
[1] Kabardino-Balkar State University,
来源：
Russian Journal of Inorganic Chemistry | 2007年 / 52卷
关键词：
Differential Thermal Analysis; Vertical Section; Sodium Tungstate; Peritectic Point; Crystallization Path;
D O I：
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中图分类号：
学科分类号：
摘要：
The four-component reciprocal system Na,K∥F, CO3, WO4 has been studied using differential thermal analysis in combination with projective and differential geometry. The a priori prediction of the crystallization path (CP) shows six quaternary invariant points; of them, three are eutectics and the others are peritectics. The dominant exchange and complexing reactions have been recognized. The following four-component systems have been studied: (NaF)2-(KF)2-K2CO3-K3FWO4 (1), (NaF)2-K2CO3-K2WO4-K3FWO4 (2), (NaF)2-Na2CO3-Na2WO4-K2WO4 (3),, and (NaF)2-Na2CO3-K2CO3-K2WO4 (4); the coordinates of all quaternary invariant points have been determined.
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页码：448 / 454
页数：6
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