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:
Mar. 30, 2004
Filed:
Nov. 02, 2001
Björn Ljungberg, Enskede, SE;
Lars-Anders Budzynski, Huddinge, SE;
Sandvik Aktiebolag, Sandviken, SE;
Abstract
According to the present invention there is provided a body at least partially coated with one or more refractory layers of which at least one layer essentially consist of &agr;-Al O . Said &agr;-Al O layer consists of essentially equiaxed grains with an average grain size of <1 &mgr;m and with a bimodal grain size distribution with coarser grains with an average grainsize in the interval 0.5-1 &mgr;m and finer grains with an average grainsize of <0.5 &mgr;m. The Al O layer further contains striated zones containing titanium (>5 at %) but no nitrogen or carbon. This particular microstructure is obtained by temporarily stopping the gases needed for the growth of the Al O layer and introducing TiCl .