Poster (Scientific congresses and symposiums)
Validation of a TEOS based sol-gel coating for the protection of carbon fibres against oxidation regarding their use in metal matrix composites
Montrieux, Henri-Michel; Lecomte-Beckers, Jacqueline; Halleux, Jacques et al.
201719th International Sol-Gel Conference
Peer reviewed
 

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Keywords :
carbon fibres; oxidation; MMC; sol-gel; TEOS
Abstract :
[en] The use of sol-gel coating on graphite substrates has sucessfuly been done. In particular, in the field of metal matrix composites, some authors state that the use and cure of TEOS sol-gel on carbon based fibres may improve the liquid magnesium infiltration. The described mechanism is the lowering of the liquid/solid contact angle under some specific conditions of time and temperature by the occurrence of a metal-oxide exothermal chemical reaction. Furthermore the application of silica based sol-gels on carbon fibres in order to control the medium to high temperature oxidation of fibres preforms is less investigated. The primary objective is to understand more deeply the oxidation of some uncoated fibres by the comparison of ESEM observations to TGA/ATD curves. The secondary objective is to formulate and coat a TEOS based sol-gel on T300 carbon fibres and to evaluate the new oxidation behaviour. The ternary objective is to measure in a simple way the gain of oxidation resistance of some coated fibres.
Disciplines :
Materials science & engineering
Author, co-author :
Montrieux, Henri-Michel ;  Université de Liège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Lecomte-Beckers, Jacqueline ;  Université de Liège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Halleux, Jacques;  Sirris > Materials Unit
Mertens, Anne  ;  Université de Liège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Language :
English
Title :
Validation of a TEOS based sol-gel coating for the protection of carbon fibres against oxidation regarding their use in metal matrix composites
Publication date :
07 September 2017
Number of pages :
A1
Event name :
19th International Sol-Gel Conference
Event place :
Liège, Belgium
Event date :
du 3 au 8 septembre 2017
Audience :
International
Peer reviewed :
Peer reviewed
Name of the research project :
Compomag
Funders :
Service public de Wallonie : Direction générale opérationnelle de l'économie, de l'emploi et de la recherche - DG06
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since 08 September 2017

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