Temperature programmed desorption and thermogravimetric studies of outgassing of aluminium powder

Véronique Chiavazza (1, 2) , Isabelle Guillemin (1, 2) , René Lalauze (1, 2)

1 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
2 MICC-ENSMSE - Département Microsystèmes, Instrumentation et Capteurs Chimiques

In order to obtain high quality powder aluminum alloys, it is necessary to optimize the degassing of the powder before sintering. By means of the temperature desorption technique and the thermogravimetric method, water and hydrogen evolution has been studied on a 7091 aluminum alloy. Concerning hydrogen formation, experiments confirm the part of water vapor in the environment and the part of water liberated by dehydration of alumina on the reactional process.

Mots clés: aluminium alliages; degassing; sintering; Temperature Programmed Desorption; TPD; Thermogravimetry; hydrogen

Domaines: Génie des procédés

Véronique Chiavazza, Isabelle Guillemin, René Lalauze. Temperature programmed desorption and thermogravimetric studies of outgassing of aluminium powder. Journées de Calorimétrie d'Analyse Thermique et de Thermodymanique Chimique, Oct 1986, Ferrare, Italy. pp.110-113. ⟨hal-00785241⟩