Coating processes – Coating by vapor – gas – or smoke – Mixture of vapors or gases utilized
Reexamination Certificate
2005-06-07
2005-06-07
Meeks, Timothy (Department: 1762)
Coating processes
Coating by vapor, gas, or smoke
Mixture of vapors or gases utilized
C427S255340, C427S255700, C427S255360
Reexamination Certificate
active
06902764
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 α-Al2O3. Said α-Al2O3layer consists of essentially equiaxed grains with an average grain size of <1 μm and with a bimodal grain size distribution with coarser grains with an average grainsize in the interval 0.5-1 μm and finer grains with an average grainsize of <0.5 μm. The Al2O3layer 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 Al2O3layer and introducing TiCl4.
REFERENCES:
patent: 4984940 (1991-01-01), Bryant et al.
patent: 5487625 (1996-01-01), Ljungberg et al.
patent: 5589223 (1996-12-01), Odani et al.
patent: 5674564 (1997-10-01), Ljungberg et al.
patent: 5766782 (1998-06-01), Ljungberg
patent: 5827570 (1998-10-01), Russell
patent: 5834061 (1998-11-01), Ljungberg
patent: 5851687 (1998-12-01), Ljungberg
patent: 5861210 (1999-01-01), Lenander et al.
patent: 5912051 (1999-06-01), Olsson et al.
patent: 6293739 (2001-09-01), Uchino et al.
patent: 6333103 (2001-12-01), Ishii et al.
patent: 6337152 (2002-01-01), Kukino et al.
patent: 0 753 602 (1997-01-01), None
patent: 0 784 103 (1997-07-01), None
patent: 95 19457 (1995-07-01), None
S. Ruppi et al., “Microstructure and deposition characteristics of κ-Al2O3”, J. Phys. IV France,9 (1999), pp. 349-355.
U.S. Appl. No. 10/155,168, Björn Ljungberg, “Oxide Coated Cutting Tool”, filed May 28, 2002.
Budzynski Lars-Anders
Ljungberg Björn
Meeks Timothy
Sandvik Aktiebolag
LandOfFree
Oxide coated cutting tool does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Oxide coated cutting tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oxide coated cutting tool will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3503355