Graphite protection against high temperature oxidation
Description
The aim of this work was to protect graphite against oxidation at high temperatures. A bibliographic study provides an overview of graphite oxidation and the possibilities of protection. The second chapter presents the experimental techniques used to prepare and characterize the protective coatings, then to follow their oxidation resistance. In preliminary work, metals were found which make a dense carbide coating oriented on the graphite. Titanium, niobium and tungsten were selected and their carbides were tested for oxidation at different temperatures. Since aluminium carbide was found to be the most interesting compound, so a large part of this work concerns it. It was prepared and exposed to air, both in bulk form and as a coating. (author)
Abstract (French)
L'objectif de ce travail est de proteger le graphite contre l'oxydation a haute temperature. Une etude bibliographique fait le point sur l'oxydation du graphite et sur les possibilites de protection de ce materiau. Le second chapitre presente les techniques experimentales utilisees pour elaborer, caracteriser et suivre la resistance a l'oxydation des revetements. Une etude preliminaire a permis de determiner les metaux formant un revetement de carbure couvrant, dense et, dans certains cas, oriente par rapport aux plans graphitiques. Le titane, le niobium et le tungstene ont ete retenus et les carbures correspondants ont fait l'objet de tests d'oxydation a differentes temperatures. Le compose le plus interessant etant le carbure d'aluminium, une grande partie de ce travail lui a ete consacree. Il a ete prepare et soumis a l'oxydation sous forme massive, puis de revetement. (auteur)Files
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Additional details
Additional titles
- Original title (French)
- Protection du graphite contre l'oxydation a haute temperature
Publishing Information
- Imprint Pagination
- 249 p.
- Report number
- FRNC-TH--11122
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 51097794
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- ALUMINIUM CARBIDES; CATHODE SPUTTERING; CHEMICAL REACTION KINETICS; GRAPHITE; MANGANESE CARBIDES; NIOBIUM CARBIDES; NIOBIUM OXIDES; OXIDATION; PROTECTIVE COATINGS; PYROLYTIC CARBON; SCANNING ELECTRON MICROSCOPY; TANTALUM CARBIDES; TITANIUM CARBIDES; TITANIUM OXIDES; TUNGSTEN CARBIDES
- Descriptors DEC
- ALUMINIUM COMPOUNDS; CARBIDES; CARBON; CARBON COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; COATINGS; ELECTRON MICROSCOPY; ELEMENTS; KINETICS; MANGANESE COMPOUNDS; MICROSCOPY; MINERALS; NIOBIUM COMPOUNDS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; REACTION KINETICS; REFRACTORY METAL COMPOUNDS; SPUTTERING; TANTALUM COMPOUNDS; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TUNGSTEN COMPOUNDS
Optional Information
- Notes
- 149 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses