ALUMINUM TITANIUM NITRIDE COATING WITH ADAPTED MORPHOLOGY FOR ENHANCED WEAR RESISTANCE IN MACHINING OPERATIONS AND METHOD THEREOF.

摘要

The present invention relates to an (AI,Ti)N coating exhibiting at least two different coating portions, A and B, having grain size in nanometer magnitude order characterized in that the coating portion A exhibit larger grain size and higher elastic modulus than the coating portion B. The present invention relates as well to a method for coating a substrate with a coating as described above whereby at least the coating portion A and/or the coating portion B of the (AI,Ti)N coating are/is deposited by means of PVD techniques.