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:
May. 07, 2002
Filed:
May. 04, 2000
Applicant:
Inventors:
Staffan Söderberg, Huddinge, SE;
Peter Littecke, Huddinge, SE;
Assignee:
Sandvik AB, Sandviken, SE;
Primary Examiner:
Int. Cl.
CPC ...
C23C 1/406 ;
U.S. Cl.
CPC ...
C23C 1/406 ;
Abstract
The present invention describes a coated CBN cutting tool for metal machining. The tool consists of one or more CBN substrate bodies with or without carbide backing. The coating is composed of one or more layers of refractory compounds of at least one layer of fine-grained, crystalline &ggr;-phase alumina (Al O ) with a grainsize less than 0.1 &mgr;m. The Al O -layer is deposited with a bipolar pulsed DMS technique (Dual Magnetron Sputtering) at substrate temperatures in the range 450° C. to 700° C.