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:
Jan. 01, 2013
Filed:
Jan. 29, 2008
Sakari Ruppi, Fagersta, SE;
Jenni Zackrisson, Fagersta, SE;
Silvia Dahlund, Söderbärke, SE;
Seco Tools AB, Fagersta, SE;
Abstract
An α-AlOcoated cutting tool insert combining a cemented carbide with a binder phase enriched surface zone and a textured α-AlO-layer is disclosed. The α-AlOlayer has a thickness ranging from about 2-9 μm and is composed of columnar grains having a length/width ratio from about 2-12. It is characterized by a strong (104) growth texture and by low intensity of the (012), (110) and (113) diffraction peaks. The textured α-AlOis preferably deposited on an MTCVD Ti(C,N) layer having a thickness from about 2-10 μm. When the alumina layer is the uppermost layer, it may be wet-blasted to an Rvalue of <about 1 μm, giving the tool a black and shiny appearance.