The Structure of Fusion-Cast High-Chrome Oxide Refractories in the Cr2O3 - MgO - Al2O3 System

The Structure of Fusion-Cast High-Chrome Oxide Refractories in the Cr2O3 - MgO - Al2O3 System The phase composition and structure of fusion-cast refractories composed of 57.0 – 84.2% Cr2O3, 4.3 – 36.1% MgO, 2.0 – 9.7% Al2O3, and 2.4 – 6.9% SiO2 have been studied by petrographic and x-ray spectral microprobe analysis methods. Refractories high in MgO with modulus M = (Cr2O3 +Al2O3)/MgO = 1.64 – 3.1 are shown to consist of spinel phase Mg(Cr, Al)2O4 and silicate glass. Refractory materials (80.8 – 84.2% Cr2O3, 4.3 – 4.7% MgO, 2.0 – 9.7% Al2O3, and 2.7 – 6.9% SiO2 with M = 18.7 – 20.2) are three-phase systems composed of spinel, escolaite, and glass phase. These materials, owing to their high corrosion resistance, have promising potentiality for practical applications. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

The Structure of Fusion-Cast High-Chrome Oxide Refractories in the Cr2O3 - MgO - Al2O3 System

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Publisher
Kluwer Academic Publishers-Consultants Bureau
Copyright
Copyright © 2005 by Springer Science+Business Media, Inc.
Subject
Materials Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Materials
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1007/s11148-005-0067-5
Publisher site
See Article on Publisher Site

Abstract

The phase composition and structure of fusion-cast refractories composed of 57.0 – 84.2% Cr2O3, 4.3 – 36.1% MgO, 2.0 – 9.7% Al2O3, and 2.4 – 6.9% SiO2 have been studied by petrographic and x-ray spectral microprobe analysis methods. Refractories high in MgO with modulus M = (Cr2O3 +Al2O3)/MgO = 1.64 – 3.1 are shown to consist of spinel phase Mg(Cr, Al)2O4 and silicate glass. Refractory materials (80.8 – 84.2% Cr2O3, 4.3 – 4.7% MgO, 2.0 – 9.7% Al2O3, and 2.7 – 6.9% SiO2 with M = 18.7 – 20.2) are three-phase systems composed of spinel, escolaite, and glass phase. These materials, owing to their high corrosion resistance, have promising potentiality for practical applications.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Sep 13, 2005

References

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