Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1625257 | Journal of Alloys and Compounds | 2008 | 4 Pages |
Abstract
The technical TiAl-alloy γ-MET (Ti–46.5Al–4(Cr, Nb, Ta, B)) was oxidised thermocyclically (24 h-cycle-test) at 900 °C in wet and dry air. In this paper results of untreated and fluorine treated TiAl-samples are presented. Their oxidation behaviour will be shown. Several methods were used to apply the halogens to the surface, e.g. beamline ion implantation, spraying of or dipping into a halogen containing liquid. A pure protective alumina scale was found, e.g. after treatment with a fluorine containing polymer and thermocyclic oxidation up to 1 year at 900 °C in laboratory air. On the other side thick fast growing and non-protective mixed oxide scales were found on the untreated samples.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
A. Donchev, E. Richter, M. Schütze, R. Yankov,