Phase Equilibria in the YPO4 -- Ba3(PO4)2 System

• Autorzy: Szuszkiewicz W. , Radomińska E. , Znamierowska T.
• Języki publikacji: EN

Abstrakty

EN

The binary system YPO4 -- Ba3(PO4)2 has been examined by differential thermal analysis, X-ray and microscopy in reflected light. Its phase diagram has been proposed. The initial orthophosphates react at a 1:1 and 2:1 molar ratio to give two intermediate compounds: Ba3Y(PO4)3 and Ba3Y2(PO4)4. It has been established that Ba3Y(PO4)3 melts congruently at 1950 š 20°C. Ba3Y2(PO4)4 melts incongruently at 1800 _ 20_C and is stable at high temperature only; it decomposes into YPO4 and Ba3Y(PO4)3 at about 1150_C. Double orthophosphate, Ba3Y(PO4)3, has a cubic unit cell (eulytite structure) with the parameter a = 10.4655 A.

Słowa kluczowe

EN

phase diagram; DTA; X-ray analysis

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2002
• Tom: Vol. 76 / nr 1
• Strony: 23--27
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Szuszkiewicz W.

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

autor

Radomińska E.

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

autor

Znamierowska T.

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

Bibliografia

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