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. 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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Kluwer Academic Publishers-Consultants Bureau
Copyright © 2005 by Springer Science+Business Media, Inc.
Materials Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Materials
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