English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/11302
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Physicochemical properties of debris ejected from C/C brakes with different structural orders

AuthorsPevida García, Covadonga ; Jacquemard, P.; Joly, J.-P.
KeywordsCarbon-carbon composites
Temperature-programmed desorption
Activated Carbon
Aircraft brakes
Surface oxides
Issue Date16-Mar-2008
CitationCarbon 46(7): 994-1002 (2008)
AbstractDebris samples from braking tests carried out with carbon/carbon discs, mounted in a reduced-scale bench, have been studied by X-ray diffraction, thermogravimetry coupled with mass spectrometry, and N2 physisorption at −196°C. The tests were carried out at low temperature with a high friction coefficient. Two materials with different structural orders (d(002) = 338 and 344 nm, respectively) were studied. Debris samples from both materials are similar: they are essentially amorphous and contain up to 10% of oxygen. The specific surface areas are about 180 m2/g. However, a careful examination of the experimental results clearly shows some differences depending on the starting materials. Debris from the less ordered material contains fewer carboxylic groups, the specific surface areas of debris obtained from the more ordered material are systematically larger, and debris samples from both materials may be differentiated by the XRD pattern of the small fraction of starting material they contain. Thus, materials with different structural orders yielded similar debris resulting from the severe mechanico-chemical processes involved but retained a slight but clear memory of the material from which they came.
Description9 pages, 6 figure, 4 tables.-- Printed version published Jun 2008.
Publisher version (URL)http://dx.doi.org/10.1016/j.carbon.2008.03.008
Appears in Collections:(INCAR) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.