Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2006-08-22
2006-08-22
Turner, Archene (Department: 1775)
Stock material or miscellaneous articles
Composite
Of inorganic material
C051S307000, C051S309000, C428S212000, C428S216000, C428S336000, C428S699000, C204S192120, C204S192150, C204S192160, C204S192380
Reexamination Certificate
active
07094479
ABSTRACT:
A surface-coated cutting tool member includes a tungsten carbide based cemented carbide substrate, a titanium carbonitride based cermet substrate, or a cubic boron nitride based sintered substrate; and a hard coating layer of a nitride compound containing aluminum and titanium, formed on a surface of the substrate using a physical vapor deposition method in an overall average thickness of 1 to 15 μm. The hard coating layer has a component concentration profile in which maximum aluminum containing points and minimum aluminum containing points appear alternatingly and repeatedly at a distance from 0.01 to 0.1 μm in a direction of thickness of the hard coating layer. The amount of contained aluminum (or titanium) is changed from the maximum aluminum containing points to the minimum aluminum containing points. The maximum aluminum containing points satisfy a formula: (AlXTi1−X)N, wherein X is between 0.70 to 0.95. The minimum aluminum containing points satisfy a formula: (AlYTi1−Y)N, wherein Y is between 0.40 to 0.65.
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Kondo Akihiro
Sato Kazunori
Tanaka Yusuke
Darby & Darby
Mitsubishi Materials Corporation
Mitsubishi Materials Kobe Tools Corporation
Turner Archene
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