Mechanical Properties of Low-Density SiC-Coated Carbon-Bonded Carbon Fiber Composites

Carbon‐bonded carbon fiber (CBCF) composites are currently used for high‐temperature thermal insulation, but they can only be used under protective atmosphere or vacuum due to their limited oxidation resistance. High temperature stability may be improved by the addition of a protective coating of si...

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Published inInternational journal of applied ceramic technology Vol. 9; no. 2; pp. 401 - 412
Main Authors Ahmed, Asher S., Chlup, Zdenek, Dlouhy, Ivo, Rawlings, Rees D., Boccaccini, Aldo R.
Format Journal Article
LanguageEnglish
Published Malden, USA Blackwell Publishing Inc 01.03.2012
Subjects
Carbon fibers
Ceramics
Fracture toughness
Mechanical properties
Oxidation resistance
Protective coatings
Silicon carbide
Thermal insulation
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Summary:Carbon‐bonded carbon fiber (CBCF) composites are currently used for high‐temperature thermal insulation, but they can only be used under protective atmosphere or vacuum due to their limited oxidation resistance. High temperature stability may be improved by the addition of a protective coating of silicon carbide. The effect of this coating on key mechanical properties of CBCF composites, namely flexural and compressive strength, modulus, and fracture toughness, is reported here. The fracture toughness of coated and uncoated materials was also determined at elevated temperatures. A significant increase of all mechanical properties was found when the protective coating was present.
Bibliography:istex:336E2A67C2A48BB9B5704BCB598217DDC361885E
ark:/67375/WNG-D803BL6W-4
ArticleID:IJAC02658
†
*
aldo.boccaccini@ww.uni‐erlangen.de
Present address: Department of Engineering Materials, University of Sheffield, Sheffield, U.K.
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1546-542X
1744-7402
DOI:10.1111/j.1744-7402.2011.02658.x