The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2012
Filed:
Dec. 06, 2007
Torbjörn Selinder, Stockholm, SE;
Mats Ahlgren, Täby, SE;
Torbjörn Selinder, Stockholm, SE;
Mats Ahlgren, Täby, SE;
Sandvik Intellectual Property AB, Sandviken, SE;
Abstract
The present invention relates to a coated cutting tool for metal machining with a from about 2.0 to about 20 μm thick PVD coating, having both the wear resistance of a coating of homogeneous layers and the toughness of a multilayer coating, comprising a first (Me,Me)(C,N,O) layer where Meis one or more of the elements in the transition metal group IV-VI, Al and Si and Meis one of the elements in the transition metal group IV-VI from about 1.0 to about 4.5 μm thick, a second (Me,Me)(C,N) layer where Meis one or more of the elements in the transition metal group IV-VI, Al and Si and Meis one of the elements in the transition metal group IV-VI and Y, from about 0.5 to about 4.5 μm thick, and in between the first and the second layer, an (Me, Me)(C,N,O) layer where Meis one or more of the elements in the transition metal group IV-VI, Al and Si and Meis one of the elements in the transition metal group IV-VI and Y, from about 0.1 to about 1.0 μm thick, where the thickness of the in between layer is less than about 0.5 times the thickness of thinnest of the first and the second layer and the layers in between has a composition differing from the first and the second layer, and a method of making thereof.