Dissolution sélective de poudres d'oxydes de Terres Rares LnOx (Ln=Pr et Tb) dans une solution d'acide acétique : effets d'irradiations ultrasonores et émission acoustique

The leaching of the Rare Earth oxides as LnO x (Ln=Pr and Tb) in an acetic acid solution has been studied according to two completely new experimental procedures. The first is linked to ultrasonic radiation effects which strongly enhance the leaching. The second corresponds to an acoustic emission which occurs in the course of the dissolution (without ultrasonic radiation)