Oxidation behavior of PAN-based carbon fibers and the effect on mechanical properties
LABRUGÈRE, Christine
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Centre de Caractérisation des Matériaux Avancés [CeCaMA]
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Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Centre de Caractérisation des Matériaux Avancés [CeCaMA]
LABRUGÈRE, Christine
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Centre de Caractérisation des Matériaux Avancés [CeCaMA]
< Réduire
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Centre de Caractérisation des Matériaux Avancés [CeCaMA]
Langue
en
Article de revue
Ce document a été publié dans
Oxidation of Metals. 2013, vol. 80, n° 3-4, p. 299-309
Springer Verlag
Résumé en anglais
PAN-based carbon fibers were oxidized both in dry air and wet air in the temperature range of 400-600 °C. Kinetic laws are established that follow an Arrhenius-type temperature dependence. Oxidised fiber surfaces were ...Lire la suite >
PAN-based carbon fibers were oxidized both in dry air and wet air in the temperature range of 400-600 °C. Kinetic laws are established that follow an Arrhenius-type temperature dependence. Oxidised fiber surfaces were investigated by SEM and AFM. Oxidation leads to the modification of surface morphology with the disappearance of the axial striations initially present. Then, residual properties were evaluated by failure tests in tension on single-filaments. Oxidation has a dramatic effect even for a low level of weight loss. The tensile failure stresses are reduced by 25-40 % for a mass loss of 2.5-5 %. This excessive embrittlement is more related to the creation of new defects by oxidation than a significant reduction in fiber cross-section area.< Réduire
Mots clés en anglais
Oxidation
PAN-based carbon fibers
Residual mechanical properties
Weibull statistics
Origine
Importé de halUnités de recherche