Phase diagram of the Ba3Y(PO4)3-BaRbPO4 system and solid solutions with α-BaRbPO4 structure in the quasi-ternary system YPO4-Rb3PO4-Ba3(PO4)2

被引：3

作者：

Pelczarska, Aleksandra ^{[1
]}

Radominska, Ewa ^{[1
]}

Szczygiel, Irena ^{[1
]}

机构：

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

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 675卷

关键词：

Rare earth alloys and compounds; Phase diagrams; Thermal analysis; Solid solution; Phosphates; CRYSTAL-STRUCTURE; CA; ORTHOPHOSPHATE; LUMINESCENCE; EQUILIBRIA; PHOSPHATES; EMISSION; EU2+; SR; BA;

D O I：

10.1016/j.jallcom.2016.03.107

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The phase diagram of the Ba3Y(PO4)(3)-BaRbPO4 system has been determined experimentally using thermoanalytical, XRD and microscopic studies. There are two invariant points in the system: eutectic one with composition 48 mass% (70 mol%) BaRbPO4 melting at T = 1560 degrees C, and another eutectoid point at 1105 degrees C in the composition range of 90-95 mass% (96-98 mol%) BaRbPO4. The high-temperature solid solution of Ba3Y(PO4)(3) in alpha-BaRbPO4 (alpha(ss)) exists above 1105 degrees C. The maximum concentration of Ba3Y(PO4)(3) in this solution is about 5 mass%. The concentration ranges in which the high-temperature solid solution with the alpha-BaRbPO4 structure forms in the quasi-ternary YPO4-Rb3PO4-Ba-3(PO4)(2) system have been determined. The formation probability of this solution is related to the structure similarity of the initial phosphates constituting this phase. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：134 / 138

页数：5

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