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Title:
SURFACE COATED CEMENTED CARBIDE CUTTING TOOL WITH EXCELLENT WEAR RESISTANCE
Document Type and Number:
Japanese Patent JP2001322005
Kind Code:
A
Abstract:

To provide a surface coated cemented carbide cutting tool with excellent wear resistance.

In the surface coated cemented carbide cutting tool made by physically depositing a tough coating layer made of one kind of single layer or two kinds of multilayers of a composite nitride layer and a composite carbonitride layer of Ti and Al by average thickness of 0.5 to 15 μm via an adhesive substrate coating layer made of one kind of single layer or two kinds of multilayers of a carbide layer, a nitride layer and a carbonitride layer of Ti having average thickness of 0.1 to 10 μm on the surface of a tool substrate made of tungsten carbide group cemented carbide or titanium carbonitride group cermet, a wear resistant coating layer made of an aluminum oxide main body layer made by substituting a part of Al by one kind or not less than two kinds of Ta, V, Nb, W, Mo and Cr of 5 to 20 atomic percent of the total amount with Al to bring a solid solution is physically deposited by average thickness of 0.5 to 15 μm on the surface of the tool in a state that a crystal structure of aluminum oxide is held via an adhesive intermediate coating layer made of one kind of single layer or two kinds of multilayers of a composite carbon oxide layer and a composite carbonitroxide layer of Ti and Al having average thickness of 0.1 to 10 μm.


Inventors:
SATO KAZUNORI
TASHIRO YASUHIKO
Application Number:
JP2000140657A
Publication Date:
November 20, 2001
Filing Date:
May 12, 2000
Export Citation:
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Assignee:
MITSUBISHI MATERIALS CORP
International Classes:
B23C5/16; B22F3/24; B23B27/14; C22C29/02; C22C29/04; C22C29/08; C22C29/10; C22C29/12; C22C29/16; C23C14/06; C23C14/16; (IPC1-7): B23B27/14; B22F3/24; B23C5/16; C22C29/02; C22C29/04; C22C29/08; C22C29/10; C22C29/12; C22C29/16; C23C14/06; C23C14/16