Copper-carbon Composition

A composition and copper phase technology, applied in the field of copper-carbon composition, can solve the problems of limiting the use of copper-carbon composites and limiting physical properties

Inactive Publication Date: 2012-05-30
THIRD MILLENNIUM METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, similar to copper metal, copper-carbon composites have physical properties that limit their use in certain applications
For example, when the composite is molten, the carbon in the copper-carbon composite phase separates from the copper metal, limiting the use of copper-carbon composites in high-temperature applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A graphite crucible (electrically grounded) was placed in a gas heated furnace. The crucible was filled with 100.795 ounces of 99.999% pure oxygen-free, high-purity ("OFHP") copper. OFHP copper was cut from rod obtained from ThyssenKrupp Materials NA of Southfield, Michigan.

[0028] Once the copper in the crucible had melted, the stirring end of the rotary stirrer was inserted into the molten copper and the rotary stirrer was turned on to create a vortex in the molten copper. While mixing, 142 grams of powdered activated carbon was introduced into the molten copper. As the activated carbon was added to the molten copper, a small amount of carbon leaked out. The powdered activated carbon used was available from Calgon Carbon Corporation of Pittsburgh, Pennsylvania -M powdered activated carbon. The temperature of the copper and carbon mixture was measured to be about 2335F.

[0029] A carbon electrode attached to an arc welder is inserted into a mixture of molten c...

Embodiment 2

[0033] A graphite crucible (electrically grounded) was placed in the induction furnace. The induction furnace was obtained from the Pillar Induction Company of Brookfield, Wisconsin. The crucible was filled with 20 pounds of C11000 copper obtained from ThyssenKrupp Materials NA.

[0034] Once the copper in the crucible had melted, the stirring end of the rotary stirrer was inserted into the molten copper and the rotary stirrer was turned on to create a vortex in the molten copper. While mixing, 154 grams of Powdered activated carbon is added to the molten copper. As the activated carbon was added to the molten copper, a small amount of carbon leaked out. The temperature of the copper and carbon mixture was measured to be about 2200F.

[0035] A carbon electrode affixed to a Lincoln arc welder is inserted into a molten copper and carbon mixture. While continuing to mix the carbon into the molten copper, the arc welder was operated to provide 230 amps through the molten co...

Embodiment 3

[0037] Embodiment 3 (comparative example)

[0038] A graphite crucible (electrically grounded) was placed in a gas heated furnace. The crucible was filled with 100.2 ounces of 99.9% pure copper obtained from ThyssenKrupp Materials NA.

[0039] Once the copper in the crucible had melted, the stirring end of the rotary stirrer was inserted into the molten copper and the rotary stirrer was turned on to create a vortex in the molten copper. While mixing, 14 grams of expanded graphite was added to the molten copper. The temperature of the mixture of copper and expanded graphite was measured to be about 2247F.

[0040] A carbon electrode attached to a Lincoln arc welder was inserted into a mixture of molten copper and expanded graphite. While continuing to mix the expanded graphite into the molten copper, the arc welder was operated to provide 240 amps through the mixture of molten copper and expanded graphite. No drop in temperature was observed once the current was provided to...

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Abstract

A copper-carbon composition including copper and carbon, wherein the copper and the carbon form a single phase material, and wherein the carbon does not phase separate from the copper when the material is heated to a melting temperature.

Description

[0001] priority [0002] This application claims priority to US Serial Application No. 61 / 219,909, filed June 24, 2010, which is hereby incorporated by reference in its entirety. technical field [0003] The present application relates to compositions comprising copper and carbon, and more particularly, to copper-carbon compositions that do not phase separate when melted or remelted. Background technique [0004] Copper metal is commonly used in various electrical and mechanical applications due to its fairly high electrical and thermal conductivity. However, copper metal is very ductile, which limits its use in mechanical and structural applications. In addition, copper metal is prone to corrosion and oxidation over time, which limits its application in various reaction environments. [0005] To enhance the thermal, mechanical, and chemical properties of copper metal, efforts have been devoted to the development of copper-carbon composites. Copper-carbon composites are f...

Claims

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Application Information

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IPC IPC(8): C01B31/00C22C9/00
CPCC04B2235/407C22C32/0084C04B35/52C04B35/653
Inventor J·V·舒格特R·C·舍雷尔
Owner THIRD MILLENNIUM METALS
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