Phase equilibria in the P2O5-rich part of the system La2O3-CaO-P2O5

被引：6
|
作者：
Jungowska, W
Znamierowska, T
机构：
[1] Department of Inorganic Chemistry, Faculty of Engineering and Economics, Academy of Economics, 53345 Wrocław
来源：
MATERIALS CHEMISTRY AND PHYSICS | 1997年 / 48卷 / 03期
关键词：
phase equilibria; thermal analysis; X-ray powder diffraction; pseudobinary systems;
D O I：
10.1016/S0254-0584(96)01891-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The system La(PO3)(3)-Ca(PO3)(2)-P2O5 was investigated using the methods of thermal analysis and X-ray powder diffraction, and its phase diagram was obtained. The occurrence of a ternary compound CaLa(PO3)(5), which was peritectically formed at a temperature of 900 degrees C and, with respect to its stoichiometry, was situated in the system La(PO3)(3)-Ca(PO3)(2), was found. The phosphate CaLa(PO3)(5) with lanthanum ultraphosphate gives the pseudobinary system CaLa(PO3)(5)-LaP5O14. The related phase diagram, as well as a one for the side system La(PO3)(3)Ca(PO3)(2), was obtained.
引用
收藏
页码：230 / 233
页数：4
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