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Abstract

TiAl-based intermetallic compounds have attracted considerable interest as structural materials for high-temperature applications due to their low density and substantial mechanical strength at high temperatures. However, one major drawback hindering industrial application arises from the insufficient oxidation resistance at temperatures beyond 700 C. In the present contribution some general aspects of high temperature oxidation of TiAl-based intermetallics will be presented. This will be followed by a discussion of the influence of alloying elements, in particular niobium, and of the effect of nitrogen in the oxidizing environment on the high temperature oxidation behaviour of such materials.

Additional information

Authors: STROOSNIJDER M F, JRC Ispra (IT);SUNDERKOTTER J D, JRC Ispra (IT);HAANAPPEL V A C, JRC Ispra (IT)
Bibliographic Reference: Paper presented: International Symposium on Physical Chemistry of High Temperature Composites, Intermetallics and Metal-Ceramic Systems, Warrendale (US), February 4-8, 1996
Availability: Available from (1) as Paper EN 39526 ORA
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