Phase equilibria in the ternary system MgO-Na2O-P2O5.: The partial system MgO-Na3PO4-Na4P2O7

被引：0

作者：

Podhajska-Kazmierczak, T ^{[1
]}

机构：

[1] Univ Wroclaw Econ, Dept Inorgan Chem, Fac Engn & Econ, PL-53345 Wroclaw, Poland

来源：

POLISH JOURNAL OF CHEMISTRY | 2003年 / 77卷 / 03期

关键词：

phase equilibria; magnesium-sodium phosphates; DTA; solid solutions;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A partial system of MgO-Na3PO4-Na4P2O7 in the ternary system MgO-Na2O-P2O5 was investigated and its phase diagram was obtained. Thermal analysis (heating and cooling), powder X-ray diffraction, and optical microscopy using reflected light were applied. In the composition range of interest two ternary compounds occur, which melt congruently and have the formulae MgNa4(PO4)(2) (M.P. 1655degreesC) and MgNa6P2O9 (M.P. 1665degreesC). The phosphates compose a quasi-binary section with continuous solid solutions and exhibit a temperature minimum about 1520degreesC.

引用

页码：295 / 301

页数：7