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. 12, 2009
Filed:
Sep. 28, 2006
Bjorn Ljungberg, Enskede, SE;
Bjorn Ljungberg, Enskede, SE;
Sandvik Intellectual Property Aktiebolag, Sandviken, SE;
Abstract
A method of depositing a crystalline α-AlOlayer onto a cutting tool insert by Chemical Vapor Deposition at a temperature of from about 625 to about 800° C. includes the following steps: depositing a from about 0.1 to about 1.5 μm layer of TiCNOwhere x+y+z>=1 and z>0, preferably z>0.2; treating said layer at 625-1000° C. in a gas mixture containing from about 0.5 to about 3 vol-% O, preferably as CO+H, or O+H, for a short period of time from about 0.5 to about 4 min, optionally in the presence of from about 0.5 to about 6 vol-% HCl; and depositing said AlO-layer by bringing said treated layer into contact with a gas mixture containing from about 2 to about 10 vol-% of AlC, from about 16 to about 40 vol-% of CO, in Hand 0.8-2 vol-% of a sulphur-containing agent, preferably HS, at a process pressure of from about 40 to about 300 mbar. Also included is a cutting tool insert with a coating including at least one α-AlO-layer.