MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Wetting, Adhesion and Adsorption in Al-Si/(0112) α-Alumina System at 1723 K
Ping ShenHidetoshi FujiiKiyoshi Nogi
Author information
JOURNALS FREE ACCESS

2004 Volume 45 Issue 9 Pages 2857-2863

Details
Abstract

The wetting of (0112) α-Al2O3 single crystals by Al-Si alloys in the full composition range was studied by an improved sessile drop method in a reducing Ar-3%H2 atmosphere at 1723 K. The wettability and the adhesion are significantly enhanced when a small amount of Al is added to Si. In turn, the effect is less pronounced when Si is added to Al. Based on the Gibbs adsorption isotherm equation and a statistic thermodynamic model, the adsorptions of Si and Al at the liquid surface and the solid-liquid interface were determined, and the experimental results were explained by the fact that Si is a surface tensioactive element while Al is an interface tensioactive element in the Al-Si/(0112) α-Al2O3 system.

Information related to the author
© 2004 The Japan Institute of Metals and Materials
Previous article Next article
feedback
Top