Published June 1999 | Version v1
Journal article Metadata-only

Phase equilibrium in the BaF2-SrF2-LaF3 system

Creators

  • 1. Inst. Kristallografii im. A.V. Shubnikova RAN, Moscow (Russian Federation)

Description

Polythermal cross sections (Ba1-ySry)F2 - LaF3 (y = 0.1, 0.2, 0.34) in the system BaF2-SrF2-LaF3 at temperatures of 1400-1460 deg C are studied by the method of differential thermal analysis. It is ascertained that there is a saddle-shaped point on the solid solution liquidus surface. It position on phase diagram is as follows: 30±2 mol.% LaF3, 16±2 mol.% SrF2 at a temperature of 1455±3 deg C. Coordinates of the saddle-shaped point are refined by approximation and mathematical description of the liquidus surface in the vicinity of the point

Abstract (Russian)

Методом дифференциального термического анализа изучены политермические разрезы (Ba1-ySry)F2 - LaF3 (y = 0.1, 0.2, 0.34) в системе BaF2-SrF2-LaF3 при температурах 1400-1460 град. С. Установлено, что в данной системе существует седловидная точка на поврехности ликвидуса твердого раствора. Ее положение на фазовой диаграмме следующее: 30±2 мол.% LaF3, 16±2 мол.% SrF2 при температуре 1455±3 град. С. Координаты седловидной точки уточнены путем аппроксимации и математического описания поверхности ликвидуса в окрестности этой точки

Additional details

Additional titles

Original title (Russian)
Изучение фазовых равновесий в системе BaF

Publishing Information

Journal Title
Doklady Akademii Nauk - Rossijskaya Akademiya Nauk
Journal Volume
366
Journal Issue
4
Journal Page Range
p. 500-502
ISSN
0869-5652
CODEN
DAKNEQ

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
32042357
Subject category
S36: MATERIALS SCIENCE; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
BARIUM FLUORIDES; CHEMICAL COMPOSITION; DIFFERENTIAL THERMAL ANALYSIS; EQUILIBRIUM; LANTHANUM FLUORIDES; MELTING POINTS; PHASE DIAGRAMS; SOLID SOLUTIONS; STRONTIUM FLUORIDES; TEMPERATURE RANGE 1000-4000 K
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; DIAGRAMS; DISPERSIONS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; HOMOGENEOUS MIXTURES; INFORMATION; LANTHANUM COMPOUNDS; MIXTURES; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SOLUTIONS; STRONTIUM COMPOUNDS; TEMPERATURE RANGE; THERMAL ANALYSIS; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE

Optional Information

Notes
10 refs.; 2 figs.