ALUMINIUM-TITANIUM NITRIDE CATING WITH ADAPTED MORPHOLOGY FOR INCREASED WEAR RESISTANCE DURING MACHINING OPERATIONS AND CORRESPONDING METHOD Russian patent published in 2017 - IPC C23C14/06 C23C14/24 

FIELD: tools.

SUBSTANCE: present invention relates to coating from (Al,Ti)N, substrate with such coating and to said coating application by physical vapor deposition (PVD) and can be used for machine parts and tools coating. Coating from (Al,Ti)N has two different parts A and B of coating with different nanometric grain size, wherein part B of coating is applied on part A of coating, and part A of coating has grain size, gz_A, at least, in 1.25 times larger, than grain size, gz_B, of part B of coating and higher modulus of elasticity, than part B of coating. Substrate has, at leasts partially, said coating from (Al,Ti)N. During implementation of said coating application method part A of coating is applied using plasma, having lower electronic temperature and/or lower reactive gas ionization in comparison with plasma, which is used during part B of coating application.

EFFECT: providing coating for high-quality cutting tools, enabling improved tribological properties of surfaces, subject to tribological contact, such as hardness, wear resistance, oxidation resistance, improved cutting properties and higher efficiency compared to prior art of cutting tool.

21 cl, 3 dwg