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1 PublikationOptimization of the fluorine effect for improving the oxidation resistance of TiAl alloys
Donchev, A.; Schütze, M.; Kolitsch, A.; Yankov, R.
Abstract
The oxidation resistance of TiAl-alloys can be improved drastically by treating the surface of the components with small amounts of fluorine. The oxidation mechanism is changed. Hence, the formation of a fast growing mixed oxide scale on untreated alloys is suppressed. Instead a thin protective alumina scale is formed on samples after fluorine treatment. The different methods only influence the surface region of the components so that the bulk properties are not affected. Recent results achieved with F-containing inorganic compounds showed that the fluorine effect can be improved even further. TiAl-specimens were treated only with fluorine and with F-containing compounds in several ways and their performance during high temperature oxidation tests in air was investigated. Results of isothermal and thermocyclic oxidation tests are presented. The results are discussed in terms of a later use of the fluorine effect for technical applications.
Keywords: TiAl; fluorine treatment; oxydation resistance
Beteiligte Forschungsanlagen
- Ionenstrahlzentrum DOI: 10.17815/jlsrf-3-159
Verknüpfte Publikationen
- DOI: 10.17815/jlsrf-3-159 is cited by this (Id 17207) publication
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Materials Science Forum 706-709(2012), 1061-1065
DOI: 10.4028/www.scientific.net/MSF.706-709.1061
Cited 5 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-17207