Metastable phase relation and phase equilibria in the Cr2O3-Fe2O3 system |
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Authors: | Y Murakami A Sawata Y Tsuru K Akiyama |
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Affiliation: | (1) Advanced Technology Research Center, Mitsubishi Heavy Industries, Ltd., Sachiura 1-8-1, Kanazawa-ku, Yokohama, 236-8515, Japan |
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Abstract: | In order to ascertain the metastable phase relation in the Cr2O3-Fe2O3 system, the existing phases were investigated by X-ray analysis using samples obtained by heating the coprecipitated powders for 1 h at 600–1000°C. There was a metastable two-phase region of Cr2O3-rich (CC) and Fe2O3-rich (FC) phases below about 940°C. Equilibrium state of 1:1 composition at 600–900°C was considered to be a single phase of the corundum solid solution. The metastable two-phase CC + FC region was suggested to appear probably due to the compositional inhomogeneity in the coprecipitated powders. |
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