Phase Equilibria in the Ternary System MgO-Na2O-P2O5. The Partial System Mgo-Na3PO4-Na4P2O7

• Autorzy: Podhajska-Kaźmierczak T.
• Języki publikacji: EN

Abstrakty

EN

Apartial 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. 1655°C) and MgNa6P2O9 (m.p. 1665°C). The phosphates compose a quasi-binary section with continuous solid solutions and exhibit a temperature minimum about 1520°C.

Słowa kluczowe

EN

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

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2003
• Tom: Vol. 77 / nr 3
• Strony: 295--301
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Podhajska-Kaźmierczak T.

• Faculty of Engineering and Economics, Department of Inorganic Chemistry, Wrocław University of Economics, Komandorska 118/120, 53-345 Wrocław, Poland

Bibliografia

• 1. Berak J. and Znamierowska T., Roczn. Chem., 46, 1967 (1972).
• 2. Podhajska-Kaźmierczak T., Prace Naukowe Akad. Ekonomicznej - Wrocław, 729,93 (1996) (in Polish).
• 3. Podhajska-Kaźmierczak T., Thermochim. Acta, 385, 163 (2002).
• 4. Podhajska-Kaźmierczak T. and Znamierowska T., Polish J. Chem., 73, 279 (1999).