Taiho Kogyo Co., Ltd.

Ryo Mukai

Hiromi Yokota

Nahomi Hamaguchi

Kao Mouri

Shinichi Kato

Masanori Akizuki

Akira Sawamoto

Takao Masamura

Atsushi Koyama

A sliding material based on graphite-added resin containing 5 to 60% by weight of graphite particles having an average particle diameter of from 5 to 50 &#x3bc;m, and a degree of graphitization of 0.6 or more, with the balance being one or more of polyimide resin and polyamide-imide resin, and further, the number of the graphite particles having a minimum diameter/maximum diameter ratio (hereinafter referred to as 'particle ratio') of 0.5 or more amounts to 50% or more of the total number of the graphite particles observed in a photograph of an optional cross section of the sliding material based on graphite-added resin.

Sliding material based on graphite-added resin and sliding member

A method of producing a Pb-free copper-alloy sliding material containing 1.0 to 15.0% of Sn, 0.5 to 15.0% of Bi and 0.05 to 5.0% of Ag, and Ag and Bi from an Ag&#x2014;Bi eutectic. If necessary, at least one of 0.1 to 5.0% of Ni, 0.02 to 0.2% P, 0.5 to 30.0% of Zn, and 1.0 to 10.0 mass % of at least one of a group consisting of FeP, FeP, FeB, NiB and AlN may be added.

Pb-free copper-alloy sliding material, and plain bearing

Sliding parts are made of Pb-free Cu&#x2014;Bi based sintered material. The side in contact with a shaft is machined to a predetermined roughness. A number of Bi phases are present on the finished surface. Stable performance of Bi is to be exhibited. Machined sintered material covers a portion of the Bi phases. The ratio of the exposed surface area of the Bi phases is 0.5% or more relative to the area of the finished surface.

Sliding part made of Pb-free Cu-Bi based sintered alloy

The present invention relates to sliding material provided by sintering a lead-free copper or copper alloy and contains at least one mineral selected from the group consisting of talc, mica, kaolinite mineral and montmorillonite mineral. Pb has conventionally been included in sliding materials for the purpose of obtaining conformability and seizure resistance. Despite the absence of Pb, the Pb-free copper-based sliding material and sliding parts according to the present invention have improved sliding properties.

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Kashima, Japan

Ryo Mukai