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Behavior of Chromite Spinel as Related to Microstructure
Author(s) -
TREFFNER WALTER S.
Publication year - 1961
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1961.tb11663.x
Subject(s) - chromite , spinel , microstructure , metallurgy , materials science , mineralogy , magnesium , oxide , chemistry
The microstructure of massive, sugary, and mylonitic varieties of raw chrome ores has been examined with the aid of polished sections and the difference in the surface area and homogeneity of the natural chromite spinels has been noted. The behavior of the chromite spinels on oxidation, reduction, and with and without the additions of magnesia is illustrated in a series of photomicrographs; the complex reactions occurring are discussed briefly and their significance in the behavior of chrome ore‐containing refractories in slag‐free environments is indicated. The usefulness of reflected‐light techniques in studying diffusion phenomena is shown for several solid‐state reactions, including the formation of synthetic spinels, artificial modifications of a natural spinel, and iron oxide bursting.