Investigation of Phase Equilibria in the System Nd2O3–Na2O–P2O5: The Partial System NdPO4–Na3PO4–Na4P2O7

• Autorzy: Znamierowska T. , Bandrowski Sz.
• Języki publikacji: EN

Abstrakty

EN

The NdPO4–Na3PO4–Na4P2O7 portion of the oxide Nd2O3–Na2O–P2O5 system was investigated using thermoanalytical, X-ray powder diffraction and light microscopy techniques, and its phase diagram has been proposed. In the composition range of interest one ternary compound occurs, Na3Nd(PO4)2, which melts incongruently at 1485C and exhibits a polymorphic transition at about 1040C. Two subsystems: NdPO4–Na4P2O7 and Na3Nd(PO4)2–Na4P2O7, which are quasi-binary only in the subsolidus regions, i.e. 944C and 967C, respectively, have been found. It has been shown that a ternary peritectic (tP = 967C) and a ternary eutectic (t = 961C) occur in the quasi-ternary NdPO4–Na3PO4–Na4P2O7 system.

Słowa kluczowe

EN

phase diagram; DTA; TG; DTG; X-ray powder diffraction; neodymium sodiumorthophosphates

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2007
• Tom: Vol. 81, nr 4
• Strony: 485--492
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Znamierowska T.

autor

Bandrowski Sz.

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

Bibliografia

• 1. Znamierowska T. And Bandrowski Sz., Polish J. Chem., 77, 1131 (2003).
• 2. Znamierowska T. And Bandrowski Sz., Polish J. Chem., 78, 771 (2004).
• 3. Znamierowska T. And Bandrowski Sz., Polish J. Chem., 80, 1731 (2006).
• 4. Turkdogan E.T. And Maddocks W.R., J. Iron Steel Inst., 172, 1 (1952).
• 5. Znamierowska T. And Mizer D., Polish J. Chem., 78, 195 (2004).