Wear resistant coating produced from at least two different alcr-based targets

Coating system (210) deposited on a surface of a substrate (201) comprising an under coating film (212), an interjacent coating film (216) deposited as a multi-layered film (216), consisting of a plurality of A-layers and a plurality of B-layers deposited alternating one on each other forming a A/B/A/B/A . . . architecture, the A-layers comprising aluminium chromium and optionally one or more dopant elements and the B-layers comprising aluminium chromium nitride and one or more dopant elements, characterized in that,

• The under coating film (212) is deposited on the surface of the substrate (201) to be coated or in any case closer to the substrate (201) than the interjacent coating film (216).
• The interjacent coating film (216) is deposited between the under coating film (212) and the upper coating film (220).
• The upper coating film (220) is deposited more distant from the substrate (201) than the interjacent coating film (216).
• The A-layers comprise:
• aluminium (Al), chromium (Cr) and nitrogen (N), or
• aluminium (Al), chromium (Cr), nitrogen (N) and one or more dopant elements selected from boron (B), yttrium (Y), tantalum (Ta), silicon (Si), tungsten (W), titanium (Ti), calcium (Ca), magnesium (Mg), iron (Fe), cobalt (Co), zinc (Zn) and niobium (Nb),
• The B-layers comprise aluminium (Al), chromium (Cr), nitrogen (N) and one or more dopant elements selected from boron (B), yttrium (Y), tantalum (Ta), silicon (Si), tungsten (W), titanium (Ti), calcium (Ca), magnesium (Mg), iron (Fe), cobalt (Co), zinc (Zn) and niobium (Nb).
• Wherein:
• The A layers differs from the B layers at least in the chemical composition, wherein:
• at least one chemical element is present in the B layers but not present in the A layers or is present in the B layers but not present in the A layers, or
• if both A layers and B layers contains the same chemical elements, then the concentration of the chemical elements in the B layers differs from the concentration of the chemical elements in the A layers,
• and
• the concentration of the one or more dopants in the B layers is higher than the concentration of the one or more dopant elements in the A layers, if any.