Functionally gradient ceramic coating for carbon-carbon antioxidation protection

Authors
Cairo, CAA Graca, MLA Silva, CRM Bressiani, JC
Citation
Caa. Cairo et al., Functionally gradient ceramic coating for carbon-carbon antioxidation protection, J EUR CERAM, 21(3), 2001, pp. 325-329
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN journal
09552219 → ACNP
Volume
21
Issue
3
Year of publication
2001
Pages
325 - 329
Database
ISI
SICI code
0955-2219(200103)21:3<325:FGCCFC>2.0.ZU;2-K
Abstract
Functionally gradient ceramic coating provides an effective antioxidant pro tection to carbon/carbon composites at intermediate temperatures (below 100 0 degreesC) by the formation of a B2O3 glass from the oxidation of boron ph ases. The glass flows and seals the cracks to prevent further oxygen penetr ation. A protection layer based on SiC, B4C and Al8B4C7 phases was obtained by carbon conversion of the composite using a pack cementation process wit h a powder mixture of the ZrB2-SiC-Al2O3, system. (C) 2001 Elsevier Science Ltd. All rights reserved.