OXIDATION-RESISTANT LAYER FOR TiAl MATERIALS AND METHOD FOR THE PRODUCTION THEREOF

摘要

The present invention relates to a protective layer for TiAl materials for affording protection against oxidation, said protective layer having a layer sequence which, proceeding from the inner side facing toward the TiAl material (1), has an inner aluminum oxide layer (5), a first gradient layer (6) comprising aluminum and a base metal with a base metal content increasing outward toward the surface side, a base metal layer (7), a second gradient layer (8) comprising aluminum and a base metal with an aluminum content increasing outward toward the surface side, and an outer aluminum oxide layer (9), and also to a method for the production thereof

主权项

1. A protective layer for protecting a TiAl material against oxidation, wherein the protective layer has a layer sequence which, proceeding from an inner side facing toward the TiAl material, comprises an inner aluminum oxide layer, a first gradient layer comprising aluminum and a base metal with a base metal content increasing outward toward a surface side, a base metal layer, a second gradient layer comprising aluminum and a base metal with an aluminum content increasing outward toward the surface side, and an outer aluminum oxide layer.