Phase Diagram and Metastable Phases in the LaPO4–YPO4–(H2O) System-Reference-Cited by-同舟云学术

Phase Diagram and Metastable Phases in the LaPO4–YPO4–(H2O) System

Published:2024-09-05 Issue:3 Volume:69 Page:422-432
ISSN:0044-457X
Container-title:Журнал неорганической химии
language:
Short-container-title:Žurnal neorganičeskoj himii

Author:

Enikeeva M. O.¹²,Proskurina O. V.¹²,Gusarov V. V.¹

Affiliation:

1. Ioffe Institute

2. Saint Petersburg State Institute of Technology

Abstract

Phase formation in the LaPO4-YPO4-(H2O) system was studied under hydrothermal conditions at T≈230°C and after thermal treatment in the temperature range 1000–1400°C. The phase equilibrium diagram was constructed for the LaPO4-YPO4 system. The regions of metastable binodal and spinodal phase transition monazite-structured with a critical point Tcr = 931°C have been calculated. The experimentally determined eutectic temperature of 1850±35°C is in good agreement with the calculated value Te=1820°C. The maximum solubility of YPO4 in LaPO4 at eutectic temperature obtained from the thermodynamic optimized phase diagram is 50.5 mol.%.

Publisher

The Russian Academy of Sciences

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