Preparation of alumina particle suspension in liquid tin using a pre-coating process

Jean-Marc Auger (1, 2, 3) , Sylvain Martin (1, 2, 3) , Frédéric Gruy (1, 2, 3)

1 LGF-ENSMSE - Laboratoire Georges Friedel
2 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
3 PMMG-ENSMSE - Département Procédés de Mise en oeuvre des Milieux Granulaires

This paper presents a process and its variants to prepare alumina particle suspension in liquid tin alloy. Complication may arise due to the non-wettability of alumina by tin alloy. For this purpose, prior to introduce the powder into the liquid metal, the particles of alumina are covered by a thin layer of tin metal by using a controlled milling process. The operating conditions leading to an optimal coverage without particle damage and to a good dispersibility in the liquid metal have been searched.

Mots clés: alumina; milling; coating; wetting; liquid metal

Domaines: Génie des procédés

Jean-Marc Auger, Sylvain Martin, Frédéric Gruy. Preparation of alumina particle suspension in liquid tin using a pre-coating process. Metallurgical Research & Technology, 2019, 116 (5), pp.510. ⟨10.1051/metal/2019013⟩. ⟨hal-02277476⟩