Ebara Corporation

Sugiyama Seisakusyo Co., Ltd.

Nippon Tungsten Co., Ltd.

Kenichi Sugiyama

Hiroshi Nagasaka

Momoko Kakutani

Yoshikazu Kimura

Norio Takahashi

Hiroshi Yakuwa

Matsuho Miyasaka

Hirokazu Takayama

Shuhei Nakahama

Nobuaki Ito

Kenji Fujimoto

Satoshi Kawamura

Makoto Komiya

Provided is a TiC&#x2014;(Ti&#x2014;Mo) sliding material having a binder phase made of a Ti&#x2014;Mo alloy, and a hard phase containing TiC, wherein the TiC&#x2014;(Ti&#x2014;Mo) sliding material satisfies all the following conditions: (1) a total area of the binder phase and the hard phase is 90% or more of an area of a field of view; (2) a total area of the binder phase is 15% or more and 20% or less of the area of the field of view; (3) in the binder phase, a total area of the binder phase having a diameter equivalent to 10 &#x3bc;m or more and 50 &#x3bc;m or less; (4) in the binder phase, a total area of the binder phase having a diameter equivalent to less than 10 &#x3bc;m; and (5) a Mo concentration in the binder phase is 25 wt % or more and 35 wt % or less.

Sliding material, shaft sleeve, and pump provided with shaft sleeve

A coating material has a first layer deposited on a base material and a second layer deposited on the first layer. The first layer is made of a Ni-base alloy or a Co-base alloy containing carbon as an unavoidable impurity. The second layer is made of a hard material containing carbide and a metal component. The first layer serves as a barrier for preventing carbon from being diffused from the second layer into the base material to prevent the base material from being carburized.

Coating material having corrosion resistance and wear resistance

A method of producing a plane commutator in which it is easy to integrally form carbon and segment, connecting strength between the carbon and mold resin is enhanced, and conductivity is enhanced. The plane carbon commutator comprises a plurality of metal segments fixed to a commutator body made of resin, engaging projections provided on a carbon which was previously burnt at a high temperature, the engaging projections being engaged with engaging holes provided in the segments functioning to allow insertion of the engaging projections into the engaging holes but prevent the engaging projections from being pulled out from the engaging holes are projected from peripheral edges of the engaging holes, and the cut-rising pieces are brought into contact under pressure with peripheral faces of the engaging projections. Peripheral faces of tip end side engaging projections are formed into coarse faces, and conductive paste is interposed between the segments and the carbon.

Method of producing plane carbon commutator

A plane commutator in which it is easy to integrally form carbon and segment, connecting strength between the carbon and mold resin is enhanced, and conductivity is enhanced. The plane carbon commutator comprises a plurality of metal segments fixed to a commutator body made of resin, engaging projections provided on a carbon which was previously burnt at a high temperature, the engaging projections being engaged with engaging holes provided in the segments functioning to allow insertion of the engaging projections into the engaging holes but prevent the engaging projections from being pulled out from the engaging holes are projected from peripheral edges of the engaging holes, and the cut-rising pieces are brought into contact under pressure with peripheral faces of the engaging projections. Peripheral faces of tip end side engaging projections are formed into coarse faces, and conductive paste is interposed between the segments and the carbon.

Plane carbon commutator

A water lubricated bearing or water lubricated seal using water as a lubricant. The bearing or seal has: a rotary member secured directly or indirectly to a rotary side, and a stationary member secured directly or indirectly to a stationary side and facing the rotary member for making sliding contact therewith. A substrate of either one of the rotary member and the stationary member is a metallic material and a thin titanium nitride film is formed on the sliding surface thereof. The other member is made of a non-brittle material or a film of hard material is formed on the sliding surface thereof. Thereby, a coefficient of friction of the bearing or seal is reduced and a wear resistance of the same is improved.

Water lubricated machine component having contacting sliding surfaces

Growing community of inventors

Tokyo, Japan

Kenichi Sugiyama