Nippon Piston Ring Co., Ltd.

Nippon Itf, Inc

Shinya Kanazawa

Yoshihiro Ito

Hiroyuki Sugiura

Takahiro Okazaki

Takehiko Ooshiro

Hideki Moriguchi

Akinori Shibata

A sliding member () including a coating film () composed of a hard carbon layer on a sliding surface () of a base material (). The coating film has, when a cross section thereof is observed by a bright-field TEM image, a thickness within a range of 1 &#x3bc;m to 50 &#x3bc;m, and is configured by repeating units including black hard carbon layers (B), relatively shown in black, and white hard carbon layers (W), relatively shown in white, and laminated in a thickness direction, and comprise an inclined region, provided on a base material side, where thicknesses of white hard carbon layers (W) of the repeating units gradually increase in a thickness direction, and a homogeneous region\, provided on a surface side of the sliding member, where thicknesses of the white hard carbon layers (W) of the repeating units are the same or substantially the same in the thickness direction.

Sliding member and coating film

Growing community of inventors

Saitama, Japan

Shinya Kanazawa