Title:
DLC-COATED TOOL
Document Type and Number:
WIPO Patent Application WO/2008/149824
Kind Code:
A1
Abstract:
A DLC-coated tool produced by forming a substantially hydrogen-free DLC film
on a substrate, wherein the DLC film has a density of 3.0 to 3.4g/cm3
and a nanoindentation hardness of 40 to 100GPa and wherein in the surface scanning
test with a stylus type surface profile measuring apparatus provided with a stylus
whose point has a radius of curvature of 2μm at a measurement feed of 0.01mm,
the ratio of the absolute value of a difference between the arithmetic mean surface
roughness of the substrate before film formation and the arithmetic mean roughness
of the DLC film to the thickness of the DLC film, ΔRa/t, is 0.05 or below and
the ratio of the occupancy area ratio (s) of convexed and recessed parts of the
DLC film due to the adhesion or desorption of foreign matter to the thickness (t)
of the film, s/t, is 0.01 (%/nm) or below.
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Inventors:
TAKIKAWA, Hirofumi (1-1 Hibarigaoka, Tempaku-cho, Toyohashi-sh, Aichi 80, 4418580, JP)
滝川浩史 (〒80 愛知県豊橋市天伯町雲雀ヶ丘１－１国立大学法人豊橋技術科学大学内 Aichi, 4418580, JP)
HASEGAWA, Yushi (Wa-13, Yoshihara-machi, Nomi-sh, Ishikawa 11, 9290111, JP)
滝川浩史 (〒80 愛知県豊橋市天伯町雲雀ヶ丘１－１国立大学法人豊橋技術科学大学内 Aichi, 4418580, JP)
HASEGAWA, Yushi (Wa-13, Yoshihara-machi, Nomi-sh, Ishikawa 11, 9290111, JP)
Application Number:
JP2008/060089
Publication Date:
December 11, 2008
Filing Date:
May 26, 2008
Export Citation:
Assignee:
ONWARD CERAMIC COATING CO., LTD. (Wa-13, Yoshihara-machi Nomi-sh, Ishikawa 11, 9290111, JP)
株式会社オンワード技研 (〒11 石川県能美市吉原町ワ－１３ Ishikawa, 9290111, JP)
NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY (1-1 Hibarigaoka, Tempaku-cho , Toyohashi-shi, Ai, hi 80, 4418580, JP)
国立大学法人豊橋技術科学大学 (〒80 愛知県豊橋市天伯町雲雀ヶ丘１－１ Aichi, 4418580, JP)
TAKIKAWA, Hirofumi (1-1 Hibarigaoka, Tempaku-cho, Toyohashi-sh, Aichi 80, 4418580, JP)
株式会社オンワード技研 (〒11 石川県能美市吉原町ワ－１３ Ishikawa, 9290111, JP)
NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY (1-1 Hibarigaoka, Tempaku-cho , Toyohashi-shi, Ai, hi 80, 4418580, JP)
国立大学法人豊橋技術科学大学 (〒80 愛知県豊橋市天伯町雲雀ヶ丘１－１ Aichi, 4418580, JP)
TAKIKAWA, Hirofumi (1-1 Hibarigaoka, Tempaku-cho, Toyohashi-sh, Aichi 80, 4418580, JP)
International Classes:
B23B27/14; B23B27/20; B23B51/00; B23C5/16; C23C14/06; C30B29/04; B23B27/14; B23B27/20; B23B51/00; B23C5/16; C23C14/06; C30B29/04
Attorney, Agent or Firm:
MATOBA, Motonori (MR Building 3F30-17, Hongo 1-chom, Bunkyo-ku Tokyo, 113-0033, JP)
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