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Microstructure of Silica in the Presence of Iron Oxide
Author(s) -
VLACK LAWRENCE H.
Publication year - 1960
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.1151-2916.1960.tb14328.x
Subject(s) - microstructure , materials science , oxide , magnetite , iron oxide , quartz , brick , phase (matter) , metallurgy , chemical engineering , mineralogy , composite material , chemistry , organic chemistry , engineering
The microstructures that are developed when iron oxide reacts with excess silica at elevated temperatures are described. Compacts of powdered quartz and iron oxide were heated to various temperatures and under selected conditions of oxidation to determine the effect of these parameters on microstructure. The results show that temperature has a small but measurable effect on the geometry of the silica and liquid phases. The oxidation level does not have an effect on the geometry of the phases in this system other than to reduce the liquid content by introducing magnetite as a secondary phase. The strength of silica brick in the presence of high liquid contents probably arises from the interfacial‐energy relations which maintain considerable solid‐to‐solid contact at elevated temperatures.