Sliding member, bearing, sliding member manufacturing method, and bearing manufacturing method
AssigneeSenju Metal Industry Co., Ltd.
InventorsNaoki Sato, Toshio HAKUTO, Takashi AKAGAWA, Yuji KAWAMATA, Ryoichi SUZUKI, Takashi SAITO, Tadashi OSHIMA, Hajime KATO
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Abstract
A sliding member includes a metal substrate and a sliding layer formed on one surface of the metal substrate. The sliding layer has a matrix phase containing Cu and Sn and hard particles dispersed in the matrix phase and containing a Laves phase constituted of a composition of Co, Mo and Si.
Claims24
A bearing, comprising:
- a metal substrate, and
- a sliding layer formed on one surface of the metal substrate,
- wherein the bearing is constituted in an annular shape with the sliding layer on an inside, and a cylindrical inner peripheral surface is constituted of the sliding layer,
- wherein the sliding layer has
- a matrix phase comprising Cu and Sn, and
- hard particles dispersed in the matrix phase and comprising a Laves phase constituted of a composition of Co, Mo and Si.
A method for manufacturing a sliding member, comprising:
- a step of sprinkling a mixed powder on one surface of a metal substrate, the mixed powder having a first powder comprising Cu, Sn, and Bi and a hard particle powder comprising a Laves phase constituted of a composition of Co, Mo, and Si and comprising Cu, Si, Fe, Mo, Co, and Cr, and
- a step of sintering the mixed powder sprinkled on the metal substrate at 800 to 900° C.
A method for manufacturing a bearing, comprising:
- a step of sprinkling a mixed powder on one surface of a metal substrate, the mixed powder having a first powder comprising Cu, Sn and Bi and a hard particle powder comprising a Laves phase constituted of a composition of Co, Mo and Si and comprising Cu, Si, Fe, Mo, Co, and Cr,
- a step of sintering the mixed powder sprinkled on the metal substrate at 800 to 900° C. to form a sliding layer,
- a step of rolling the metal substrate having the sliding layer formed thereon, and
- a step of processing the rolled metal substrate into a wound bush shape with the sliding layer on an inside.
A mixed powder for sliding surfaces of a sliding member and a bearing, comprising:
- a first powder comprising Cu and Sn,
- a hard particle powder comprising a Laves phase constituted of a composition of Co, Mo and Si and further comprising Sn at 1% by mass or more, and
- a second powder comprising Cu, Co, Fe, Ni, Si, and Cr and further comprising Sn at 1% by mass or more.
A hard particle powder for a sliding surface of a bearing, comprising:
- a Laves phase constituted of a composition of Co, Mo, and Si and further comprising:
- Sn at 1% by mass or more.
A powder for a sliding surface of a bearing, comprising Cu, Co, Fe, Ni, Si, and Cr, and further comprising Sn at 1% by mass or more,
- wherein contents of constituent elements in the powder for a sliding surface of a bearing are Co:
- 0.6 to 4.6% by mass, Fe:
- 1.6 to 5.6% by mass, Ni:
- 10 to 14% by mass, Si:
- 0.5 to 4.5% by mass, Cr:
- 0.5 to 1.5% by mass, Sn:
- 1 to 15% by mass, and Cu:
- the balance, per 100% by mass of the whole powder.
A hard particle powder for sliding surfaces of a sliding member and a bearing, comprising:
- a Laves phase constituted of a composition of Co, Mo, and Si,
- wherein contents of constituent elements in the hard particle powder are Co:
- 14 to 20% by mass, Mo:
- 24 to 28% by mass, Si:
- 3 to 7% by mass, Fe:
- 2 to 16% by mass, Cr:
- 1 to 10% by mass, Sn:
- 4% by mass or more, and Cu:
- the balance, per 100% by mass of the whole hard particle powder.
Dependencies are inferred from the claim text.