Patent ID: 8465852
Filing Date: 2013-06-18
Classification: B82Y,C01G,C01P,C23C

Abstract:
1. An oxide film coated material, comprising an oxide film, an underlying film, and a substrate, wherein: the oxide film coated material is formed by a cathodic arc ion plating process with a metallic target comprising Zr, Al and one or more of Mg and Y to form a multilayer comprising at least one underlying film alternately formed between at least one oxide film and the substrate, such that a layer-to-layer interval of the multilayer ranges from 10 to 500 nm; the oxide film has a Vickers microhardness ranging from 29 to 33 GPa and comprises (Zr such that a is an atomic ratio of Al, b is an atomic ratio of Mg, c is an atomic ratio of Y, 1-a-b-c is an atomic ratio of Zr, x is an atomic ratio of N, and 1-x is an atomic ratio of O; and the underlying film is either: