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Title:
HARD FILM COATED CEMENTED CARBIDE MEMBER
Document Type and Number:
Japanese Patent JP2006239792
Kind Code:
A
Abstract:

To provide a hard film coated cemented carbide member, having a cemented carbide member having high hardness and high wear resistance and film constitution having high hardness and good oxidation resistance.

In this cemented carbide member coated with a hard film, the cemented carbide member includes an A layer having a composition composed of Co content of 1 to 20 wt%, Cr content of 0.2 to 2 wt%, and the remainder of WC and inevitable impurity, the mean particle diameter of WC is 0.8 μm or less, the hardness is HRA93.0 or more, and the hard film coated in at least one or more layers has the composition: (AlxCr1-x-ySiy)(N1-α-β-γBαCβOγ), wherein x, y, α, β and γ respectively indicate atomic proportion, 0.45<X<0.75, 0≤y<0.2, 0≤α<0.12, 0≤β<0.2, and 0≤γ<0.25.


Inventors:
KUBO YUTAKA
ISHIKAWA TAKASHI
Application Number:
JP2005056858A
Publication Date:
September 14, 2006
Filing Date:
March 02, 2005
Export Citation:
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Assignee:
HITACHI TOOL ENG
International Classes:
B23C5/16; B23B27/14; B23B51/00; C23C14/06