INTERMEDIATE LAYER OF COATING FOR IMPROVING ADHESIVILY BETWEEN HR-120 AND OXIDATION RESISTANT METALLIC COATING CONTAINING ALUMINUM

摘要

PROBLEM TO BE SOLVED: To prevent the formation of a brittle nitride layer during working of a coating HR-120. SOLUTION: The coated metallic parts made on an alloy containing nitrogen added have an oxidation-resistant coating layer and an intermediate layer disposed between the oxidation-resistant coating layer and these parts. The intermediate layer does not substantially contain nitrogen which eventually forms the nitride with the oxidation-resistant layer if any.