Table of Contents
International Journal of Metals
Volume 2014, Article ID 120840, 11 pages
http://dx.doi.org/10.1155/2014/120840
Research Article

A Numerical Formula for General Prediction of Interface Bonding between Alumina and Aluminum-Containing Alloys

1National Institute for Materials Science, 3-13 Sakura, Tsukuba 305-0003, Japan
2National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan

Received 19 June 2014; Accepted 9 November 2014; Published 24 December 2014

Academic Editor: Dina V. Dudina

Copyright © 2014 Michiko Yoshitake et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Interface termination between alumina and aluminum-containing alloys is discussed from a viewpoint of thermodynamics by extending the authors’ previous discussion on the interface termination between alumina and pure metal. A numerical formula to predict interface bonding at alumina-aluminum-containing alloys is proposed. The effectiveness of the formula is examined by extracting information on interface termination from experimental results and first-principle calculations in references. It is revealed that the prediction by the formula agrees quite well with the results reported in the references. According to the formula, a terminating species can be switched from oxygen to aluminum, which had been actually demonstrated experimentally. The formula uses only basic quantities of pure elements and the formation enthalpy of oxides. Therefore it can be applied for most of aluminum-containing alloys in the periodic table and is useful for material screening in developing interfaces with particular functions.