The oxidation behavior of high-temperature aluminides

The kinetics and mechanisms of oxidelayer formation on Ti-Al-X alloys, specifically Ti-25Al-18Ta, Ti-30Al-2.7Nb, and Ti-43Al-11Nb have been studied. The activation energies for the oxide formation of each of the alloys used in this work were determined, and the values obtained were compared with those obtained by other researchers for identical alloys. Author’s Note: All compositions are given in atomic percent unless otherwise indicated. For more information, contact R.G. Reddy, University of Alabama, Department of Metallurgical and Materials Engineering, A129 Bevill Buiding, P.O. Box 870202, Tuscaloosa, Alabama 35487-0202; (205) 348-1740; fax (205) 348-2164.