Carbon electrodes impregnated with three different pitches have been studied and compared. The electrode samples were heated up to 893 K in a thermogravimetric analyser at different heating rates. The weight loss was recorded with respect to time and temperature. A special technique and a calculation procedure have been developed to handle the pitch dripping from the electrode at low temperatures. A kinetic model assuming a first order reaction rate was used to interpret the data. This paper presents the experimental technique and the results of the study. The model predictions are compared with the data which shows a good agreement.Nous avons analyst5 et compark le comportement d'klectrodes de carbone imprCgnCes avec trois brais diffkrents. Les Cchantillons ont Ctk chauffks jusqu'h 893 K dans un analyseur thermogravimktrique h diffkrentes vitesses de chauffe. Les pertes de poids ont ktk enregistrkes en fonction du temps et de la tempkrature. Une technique expkrimentale particulikre et une mkthode de calcul ont ktk dkvelopkes pour permettre de tenir compte du brai de ressuage qui coule le long de I'klectrode h basse tempkrature. L'analyse des rksultats nous a conduit h I'klaboration d'un modkle cinktique bas6 sur une rkaction du premier ordre. Nous prtsentons ici la technique expkrimentale utiliske et les rksultats de I'etude. Les prkdictions du modtle s'avtrent conformes aux rksultats exp6rimentaux.
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