EDP Sciences Journals List
Issue J. Phys. IV France
Volume 03, Number C9, Décembre 1993
Proceedings of the 3rd International Symposium on High Temperature Corrosion and Protection of Materials
Actes du 3ème Colloque International sur la Corrosion et la Protection des Matériaux à Haute Température
Page(s) C9-367 - C9-373
DOI http://dx.doi.org/10.1051/jp4:1993937

Proceedings of the 3rd International Symposium on High Temperature Corrosion and Protection of Materials
Actes du 3ème Colloque International sur la Corrosion et la Protection des Matériaux à Haute Température

J. Phys. IV France 03 (1993) C9-367-C9-373

DOI: 10.1051/jp4:1993937

Oxidation of advanced intermetallic compounds

N.S. Bornstein

United Technologies Research Center, East Hartford, CT 06108, U.S.A.


Abstract
Intermetallic compounds with low densities and high melting temperatures are prime structural material candidates for advanced heat engines. The close link between crystal structure and mechanical properties has led the search for new cubic pseudo-binary transition metal aluminides. Compositing leads the way for improved mechanical properties of refractory metal silicides. In all cases there is a strong competition for oxide scale frequency between the energetic oxide formers of the intermetallic compounds. In the case of titanium aluminides, efforts are directed towards modification of the concentration of oxygen vacancies to reduce growth rates and influence scale dominance. Glass formers are added to the disilicides to promote scale fluidity to seal cracks which are pathways for oxidation.



© EDP Sciences 1993