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Mechanical Properties of Mullite–Corundum Composites Prepared from Bauxite
Author(s) -
Maldhure Atul V.,
Tripathi Himansu S.,
Ghosh Arup
Publication year - 2014
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12291
Subject(s) - mullite , corundum , materials science , thermal shock , flexural strength , composite material , bauxite , sintering , elastic modulus , atmospheric temperature range , phase (matter) , modulus , flexural modulus , ceramic , metallurgy , chemistry , physics , organic chemistry , meteorology
Mullite–corundum composites have been prepared by reaction sintering of Indian bauxite having considerable amount of impurities and silica sol. The effect of changing mullite phase proportion on the mechanical properties (i.e., flexural strength, elastic modulus, hot modulus of rupture, thermal shock resistance) of prepared composites has been studied. Flexural strength and elastic modulus increase with increasing free corundum phase content in the composites. Hot modulus of rupture for the sample containing only mullite phase increases with increasing test temperature over entire temperature range. Theoretical thermal shock resistance parameters R and R ‴ are well supported by experimental thermal shock data.