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:
Sep. 17, 2002
Filed:
May. 02, 2000
Siegfried Schiller, Dresden, DE;
Klaus Goedicke, Dresden, DE;
Fred Fietzke, Dresden, DE;
Olaf Zywitzki, Dresden, DE;
Mats Sjöstrand, Kista, SE;
Björn Ljungberg, Enskede, SE;
Sandvik AB, Sandviken, SE;
Abstract
The present invention relates to a process for producing a coated cutting tool consisting of a coating and a substrate, wherein at least one refractory layer consisting of fine-grained, crystalline &ggr;-Al O is deposited by reactive magnetron sputtering onto the moving substrate in a vacuum by pulsed magnetron sputtering in a mixture of a rare gas and a reactive gas at a pulse frequency set for 10 to 100 kHz. The deposition occurs with a rate of at least 1 nm/s with reference to a stationarily arranged substrate at a magnetron target power density in time average set for at least 10 W/cm . The substrate temperature is in the range 400 to 700° C. and the flux of impinging particles onto each individual substrate is cyclically interrupted.