Mechanical properties of chromia scales

P.F. Tortorelli

doi:doi:10.1051/jp4:1993997

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) C9-943-C9-949
DOI: 10.1051/jp4:1993997

Mechanical properties of chromia scales

P.F. Tortorelli

Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, 37831 Tennessee, U.S.A.

Abstract
Depth-sensing submicron indentation testing was used to measure the elastic-plastic behavior of sintered chromia and oxide scales formed on pure chromium in air. The use of top-down indentations limited the amount and precision of the scale data due to surface roughness and substrate effects. Nevertheless, results for the hardnesses and elastic moduli were within the range expected for such oxides. Within experimental uncertainty, the mechanical properties of the scales and those of the corresponding bulk oxide were generally comparable.