Abstract
Etude du frottement interne dans des materiaux frittes a base d'aluminium contenant O, N, Cu entre 100 et 700 K a une frequence variant entre 0,5 et 10 Hz. Observation a 400 K d'un pic de relaxation due a l'activation thermique. Suggestion d'un mecanisme possible du pic: glissement des joints de grains des grains fins avec certaine contribution de la relaxation diffusionnelle le long des particules d'oxydes ou de nitrures. Comparaison des resultats avec les proprietes mecaniques de ces memes materiaux frittes
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