Flame-sprayed copper-aluminum composite material and its production method
AssigneeTaiho Kogyo Co., Ltd.
InventorsTakashi Tomikawa, Toyokazu Yamada
Life of this patent
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Abstract
There is provided a composite material, which exhibits the properties of copper alloy and aluminum alloy, and which has improved wear-resistance and seizure-resistance. By frame-spraying is prepared a copper-aluminum composite material, which consists of copper or first copper-alloy (for example Cu—Pb alloy) including at least unmelted phase and aluminum or first aluminum-alloy (for example Al—Si alloy) including at least melted phase.
Claims37
A sliding layer of a sliding member, consisting of flame-sprayed copper-aluminum composite material, which comprises a first copper alloy having at least an unmelted phase, and a first aluminum alloy having at least a melted phase, formed by flame-spraying an aluminum-alloy powder and a copper alloy powder, wherein said first copper alloy comprises 40% by weight or less of Pb, and said first aluminum comprises from 10 to 60% by weight of Si.
18:
- A sliding layer of a sliding member, consisting of flame-sprayed copper-aluminum composite material according to claim 10, characterized in that the entire composition is Al:
- 15-50% by weight, Cu:
- 8-50% by weight, Pb:
- 32% by weight or less, Si:
- 5-50% by weight, Sn:
- 24% by weight or less, Mn:
- 1.2% by weight or less, Cr:
- 5% by weight or less, Ni:
- 4% by weight or less, Mg:
- 4.0% by weight or less, and Fe:
- 1.2% by weight or less.
A method for producing a sliding layer of a sliding member, consisting of flame-sprayed copper-aluminum composite material, comprising flame-spraying material containing powder of copper or copper alloy and powder of aluminum or aluminum alloy such that a portion of these powders is melted and a portion is not melted.
A sliding layer of a sliding member, consisting of flame-sprayed copper-aluminum composite material, which consists of copper or a first copper alloy having at least an unmelted phase, and aluminum or a first aluminum alloy having at least a melted phase.
A sliding layer of a sliding member, consisting of flame-sprayed copper-aluminum composite material, which consists of copper or a first copper alloy having at least an unmelted phase, and aluminum or a first aluminum alloy having at least a melted phase, formed by flame-spraying an aluminum-alloy powder and a copper alloy powder.
Dependencies are inferred from the claim text.