Fundamental friction and wear properties of new porous carbon materials: Woodceramics

Kazuo Hokkirigawa, Toshihiro Okabe, Kouji Saito

研究成果: Article査読

抄録

Woodceramics are new porous carbon materials obtained from wood or woody materials impregnated with phenol resin, and carbonized in a vacuum furnace at high temperatures. During the carbonizing process, the wood or woody material changes to soft amorphous carbon and the impregnated phenol resin changes to hard glassy carbon. The purpose of this investigation is to analyze the fundamental friction and wear properties of woodceramics in sliding contact with several materials. It is followed by a discussion on the possibilities of using woodceramics as friction materials. The following principal results were obtained: (1) Friction coefficient of woodceramics decreases from 0.45 to 0.15 with increasing carbonizing temperature from 400°C to 700°C when unlubricated in air; (2) Woodceramics carbonized at 800°C and 2,000°C have consistently low friction coefficient (μ = 0.13-0.15) when unlubricated in air, impregnated with base oil, and in water; (3) Unless the contact pressure exceeds a critical value, the specific wear rate of woodceramics does not exceed 10-8 mm2/N, which is low enough to allow woodceramics to be used in practical applications such as dry rubbing bearings, wet friction materials in automobile clutches, etc.

本文言語English
ページ(範囲)1180-1181
ページ数2
ジャーナルJapanese Journal of Tribology
42
10
出版ステータスPublished - 1997 12 1
外部発表はい

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 表面、皮膜および薄膜
  • 材料化学

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