Published 1980 | Version v1
Journal article Metadata-only

Oxygen reactivity of La2O3-Cr2O3-CaO MHD-related materials

Creators

  • 1. Centre National de la Recherche Scientifique, Font-Romeu, France

Description

Reactions between oxygen and La2O3, CaO, and Cr2O3 oxide powder mixtures (perovskites) have been investigated. Phase relationships in these quaternary oxides system have been determined at various temperatures. Some crystallographic properties of solid solutions of La/sub 1-x/Ca/sub x/CrO3 that may be used to make heating elements for high temperature furnaces or MHD electrodes have been investigated as a function of x. Oxygen reactions lead to an important oxygen dissolution into La2O3, CaO, Cr2O3 mixtures with basic oxides of rich CaO and La2O3 composition. The moles of dissolved oxygen per mole of chromium present in the liquids have been determined for some compositions

Additional details

Publishing Information

Journal Title
High Temp. Sci.
Journal Volume
13
Journal Issue
1
Series
High Temp. Sci.
Journal Page Range
173-188
ISSN
0018-1536

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
12640144
Subject category
S30: DIRECT ENERGY CONVERSION; S36: MATERIALS SCIENCE;
Descriptors DEI
CALCIUM OXIDES; CHEMICAL REACTIONS; CHROMIUM OXIDES; CRYSTAL STRUCTURE; ELECTRODES; LANTHANUM OXIDES; MHD GENERATORS; MIXTURES; OXYGEN; PHASE DIAGRAMS; SOLID SOLUTIONS; VERY HIGH TEMPERATURE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; CHROMIUM COMPOUNDS; DIAGRAMS; DIRECT ENERGY CONVERTERS; DISPERSIONS; ELEMENTS; HOMOGENEOUS MIXTURES; INFORMATION; LANTHANUM COMPOUNDS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; SOLUTIONS; TRANSITION ELEMENT COMPOUNDS