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Title:
SLIDING MEMBER
Document Type and Number:
WIPO Patent Application WO/2001/048267
Kind Code:
A1
Abstract:
A sliding member having a laminated hard Cr plating layer comprising a plurality of hard Cr plating layers laminated on the sliding surface thereof, wherein the individual hard Cr plating layer has fine cracks formed on the surface thereof and the fine cracks form fine voids being independent in the direction of film formation, characterized in that said laminated hard Cr plating layer has a porosity in the cross section thereof of 0. 5 to 4. 5 %. The sliding member always has fine concave portions on the sliding surface thereof even when the surface is worn by friction, which leads to the maintenance of good resistance to scuffing. The sliding member is superior in all of the resistance to scuffing, the resistance to wear and strength to a conventional sliding member having a porous Cr plating layer thereon.

Inventors:
Takamura, Hiroyuki (Nippon Piston Ring Co. Ltd, Tochigi Works No. 1111 Nogi, Nogi-machi Shimotsuga-gun Tochigi-ken, 329-0114, JP)
Omiya, Takao (Nippon Piston Ring Co. Ltd, Tochigi Works No. 1111 Nogi, Nogi-machi Shimotsuga-gun Tochigi-ken, 329-0114, JP)
Onoda, Motonobu (Nippon Piston Ring Co. Ltd, Yono Works 2-6, Honmachi-nishi 5-chome Yono-shi Saitama-ken, 338-0004, JP)
Application Number:
PCT/JP2000/009235
Publication Date:
July 05, 2001
Filing Date:
December 26, 2000
Export Citation:
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Assignee:
NIPPON PISTON RING CO., LTD. (12-10, Honmachi-higashi 5-chome Yono-shi, Saitama-ken Saitama, 338-0003, JP)
Takamura, Hiroyuki (Nippon Piston Ring Co. Ltd, Tochigi Works No. 1111 Nogi, Nogi-machi Shimotsuga-gun Tochigi-ken, 329-0114, JP)
Omiya, Takao (Nippon Piston Ring Co. Ltd, Tochigi Works No. 1111 Nogi, Nogi-machi Shimotsuga-gun Tochigi-ken, 329-0114, JP)
Onoda, Motonobu (Nippon Piston Ring Co. Ltd, Yono Works 2-6, Honmachi-nishi 5-chome Yono-shi Saitama-ken, 338-0004, JP)
International Classes:
C23C26/00; C23C28/02; C25D3/04; C25D5/14; C25D5/18; C25D7/10; (IPC1-7): C23C28/00
Attorney, Agent or Firm:
Ishikawa, Yasuo (Park Shiba Building, 4F 17-11, Shiba 2-chome Minato-ku Tokyo-to, 105-0014, JP)
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