Author/Authors :
GOUIDER-KHOUJA، Neziha نويسنده Department of Child and Adolescent, Neurology and Movement Disorders and Botulinum Toxin Consultation, Mongi Ben Hmida Institute of Neurology, Tunis, , , Y Berthier، نويسنده , , P Jacquemard، نويسنده , , B Rousseau، نويسنده , , S. Bonnamy، نويسنده , , H Estrade-Szwarckopf، نويسنده ,
Abstract :
The friction of C/C composites has been studied using a pin-on-disc tester equipped with a mass spectrometer allowing the gas exchange analysis in the contact. An oxidation of the contact regions and/or wear particles is detected by a release of CO2 associated with a consumption of O2. It starts when a transition from low to high friction and dusting regime occurs. The water vapor role in this oxidation mechanism is more complex. The change of friction coefficient appears at a relatively low bulk temperature (<300 °C) and oxidation is maintained as long as friction and wear remain high.
Keywords :
friction , C oxidation , Wear , Tribology , C/C composite , mass spectrometry
