Other

Gould Inc.

Gould Electronics Inc.

Electrocopper Products Limited

R Duane Apperson

Sidney J Clouser

Bernd Schneider

Rudolf Wiechmann

Ulrike Bohmler

Robert J Fedor

Stephen J Kohut

Sharon K Young

Roger N Wright

Susan S Enos

Richard D Patrick

This invention relates to 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. In one embodiment, the foil is annealed, said foil being characterized by a fatigue ductility of at least about 65%. The invention also relates to a process for making an electrodeposited copper foil using an electrolyte solution characterized by a critical concentration of chloride ions of up to about 5 ppm and organic additives of up to about 0.2 ppm.

High fatigue ductility electrodeposited copper foil

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.

Copper wire and process for making copper wire

Copper wire

This invention is directed to an electrodeposited copper foil having a matte-side raw foil R.sub.tm of about 4 to about 10 microns, an ultimate tensile strength measured at 23.degree. C. in the range of about 55,000 to about 80,000 psi, an elongation measured at 23.degree. C. of about 6% to about 25%, an ultimate tensile strength measured at 180.degree. C. in the range of about 30,000 psi to about 40,000 psi, an elongation measured at 180.degree. C. of about 4% to about 15%, and a thermal stability of less than about -20%. The invention is also directed to a process for making the foregoing foil, the process comprising: (A) preparing an electrolyte solution comprising copper ions, sulfate ions, chloride ions at a concentration of about 1.2 to about 4.5 ppm, at least one organic additive at a concentration of about 0.4 to about 20 ppm, and at least one impurity at a concentration of about 0.01 to about 20 grams per liter; (B) flowing said electrolyte solution between an anode and a cathode, and applying an effective amount of voltage across said anode and said cathode to deposit copper on said cathode, the current density being in the range of about 0.1 to about 3 A/cm.sup.2 ; and (C) removing copper foil from said cathode.

Electrodeposited copper foil and process for making same using

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McConnelsville, OH, United States of America

R Duane Apperson