Copper alloy compositions having enhanced thermal conductivity and wear resistance
AssigneeMaterion Corporation
InventorsSteffen MACK, Fritz C. GRENSING, Carole L. TRYBUS, David J. KRUS
Life of this patent
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Abstract
The present disclosure relates to powders and wires made from a copper-containing alloy. The copper-containing alloy is a copper-nickel-tin alloy or a copper-nickel-silicon-chromium alloy. Articles formed from the metal powder exhibit high thermal conductivity, high wear resistance, and thermal stability. The powders and wire also be used as a feed material for thermal spraying and copper-containing coatings are disclosed. The copper-containing alloy material promotes increased life of engine components and fuel efficiency when used as a cylindrical liner in an internal combustion engine.
Claims23
A composition comprising a copper-containing alloy, wherein the copper-containing alloy comprises copper, nickel, and either (i) tin or (ii) silicon and chromium, and wherein the alloy is in the form of a particulate or a wire.
An article formed by sintering a copper-containing alloy particulate composition, wherein the copper-containing alloy comprises copper, nickel, and either (i) tin or (ii) silicon and chromium.
A method of forming an article, comprising:
- shaping a composition comprising a copper-containing alloy particulate into a precursor article;
- and
- heating the precursor article at a temperature of about 500° C. to about 1100° C.;
- wherein the copper-containing alloy particulate comprises copper, nickel, and either (i) tin or (ii) silicon and chromium.
A method of forming a coating from a copper-containing alloy, comprising:
- receiving a copper-containing alloy comprising copper, nickel, and either (i) tin or (ii) silicon and chromium, which is in the form of a particulate or a wire;
- heating the copper-containing alloy to a molten or semi-molten state;
- spraying the molten or semi-molten copper-containing alloy onto a substrate to form a coating.
An engine assembly, comprising:
- a piston;
- a piston ring;
- and
- a cylindrical bore having a liner, the liner being formed from a copper-containing alloy that comprises copper, nickel, and either of (i) tin or (ii) silicon and chromium.
An article comprising:
- a substrate having at least one surface;
- and
- a copper-containing alloy coating, the copper-containing alloy comprising copper, nickel and either (i) tin or (ii) silicon and chromium,
- wherein the copper-containing alloy coating is applied to the at least one surface of the substrate.
Dependencies are inferred from the claim text.