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Influence of Zirconia Interfacial Coating on Alumina Fiber‐reinforced Alumina Matrix Composites
Author(s) -
Licciulli Antonio,
Chiechi Antonio,
Fersini Maurizio,
Sanosh Kunjalukkal P.,
Balakrishnan Avinash
Publication year - 2012
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/j.1744-7402.2012.02854.x
Subject(s) - materials science , composite material , coating , cubic zirconia , flexural strength , thermal shock , ceramic , layer (electronics) , fiber , ceramic matrix composite , sintering
The present study demonstrates an approach for fabricating fiber‐reinforced ceramic matrix composites ( CMC s) involving the coating of 2‐dimensional woven alumina fibers with zirconia layer by sol gel, followed by impregnation of these coated fibers with alumina matrix and pressureless sintering. To emphasize the benefits of the zirconia coating on these CMC s, a reference sample without interfacial coating layer was prepared. The zirconia‐coated CMC s showed superior flexural strength and thermal shock resistance compared with their uncoated counterparts. Foreign object damage tests carried out on the ZrO 2 coated CMC s at high impact speed showed localized damage without any shattering.