Stock material or miscellaneous articles – All metal or with adjacent metals – Foil or filament smaller than 6 mils
Patent
1997-02-03
1998-11-03
Zimmerman, John J.
Stock material or miscellaneous articles
All metal or with adjacent metals
Foil or filament smaller than 6 mils
428935, 148432, C25D 104
Patent
active
058305831
ABSTRACT:
This invention relates to copper wire having a substantially uniform unoriented grain structure that is essentially columnar grain free. This invention also relates to a process for making copper wire comprising: cutting copper foil to form at least one strand of copper wire, said copper foil being an annealable electrodeposited copper foil having a substantially uniform unoriented grain structure that is essentially columnar grain free, said foil being characterized by a fatigue ductility of at least about 25% after being annealed at 177.degree. C. for 15 minutes; and shaping said strand of wire to provide said strand with desired cross-sectional shape and size. This invention also relates to a process for making copper wire comprising: flowing an aqueous electrolyte solution between an anode and a cathode and applying an effective amount of voltage across the anode and the cathode to deposit copper foil on the cathode, said electrolyte solution being characterized by a chloride ion concentration of up to about 5 ppm and an organic additive concentration of up to about 0.2 ppm; cutting said foil to form at least one strand of wire; and shaping said strand of wire to provide said strand with desired cross-sectional shape and size.
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Apperson R. Duane
Bohmler Ulrike
Clouser Sidney J.
Enos Susan S.
Fedor Robert J.
Centanni Michael A.
Zimmerman John J.
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