Optimization of the Fluorine Effect for Improving the Oxidation Resistance of Tial-Alloys


Article Preview

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.



Materials Science Forum (Volumes 706-709)

Main Theme:

Edited by:

T. Chandra, M. Ionescu and D. Mantovani






A. Donchev et al., "Optimization of the Fluorine Effect for Improving the Oxidation Resistance of Tial-Alloys", Materials Science Forum, Vols. 706-709, pp. 1061-1065, 2012

Online since:

January 2012




[1] S. Becker et al.: Oxidation of Metals 38 (1992) 425.

[2] J. Doychak: Intermetallic Compounds, ed.: J.H. Westbrook and R.L. Fleischer, John Wiley & Sons, New York (1994) 977.

[3] Y. Shida and H. Anada: Oxidation of Metals 45 (1996) 197.

[4] T.C. Munro and B. Gleeson: Met. Mat. Trans. A 27 (1996) 3761.

[5] Z. Tang et al.: Surface and Coatings Techn. 110 (1998) 57.

[6] M. Schütze and M. Hald: Mat. Sci. Eng. A 239-240 (1997) 847.

[7] M. Schütze et al.: Corrosion Science 44 (2002) 303.

[8] A. Rahmel et al.: Materials and Corrosion 46 (1995) 271.

[9] A. Zeller and M. Schütze: Intermetallics 10 (2002) 59.

[10] Y. Shida and H. Anada: Corrosion Science 35 (1993) 945.

In order to see related information, you need to Login.