Corrosion-resistant coated copper and method for making the same
First Claim
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1. A corrosion-resistant metal strip having a base metal strip coated with a corrosion-resistant metal alloy and a heat created intermetallic layer between said metal alloy coating and said base metal strip, said base metal strip having a surface that includes copper prior to said metal alloy coating being coated on said base metal strip, said metal alloy coating including at least about 15 weight percent tin, an at least an effective amount of zinc to form a multi-phase metal alloy coating after said metal ahoy coating cools on said base metal strip, said tin content plus said zinc content at least about 90 weight percent, said heat created intermetallic layer including a majority of copper plus zinc and having a thickness of up to about 10 microns.
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Abstract
A corrosion-resistant coated base metal coated with a corrosion resistant alloy. The corrosion resistant alloy includes tin and zinc. The corrosion resistant coated base metal includes a heat created intermetallic layer primarily including copper and zinc.
111 Citations
44 Claims
- 1. A corrosion-resistant metal strip having a base metal strip coated with a corrosion-resistant metal alloy and a heat created intermetallic layer between said metal alloy coating and said base metal strip, said base metal strip having a surface that includes copper prior to said metal alloy coating being coated on said base metal strip, said metal alloy coating including at least about 15 weight percent tin, an at least an effective amount of zinc to form a multi-phase metal alloy coating after said metal ahoy coating cools on said base metal strip, said tin content plus said zinc content at least about 90 weight percent, said heat created intermetallic layer including a majority of copper plus zinc and having a thickness of up to about 10 microns.
- 20. A corrosion-resistant metal strip having a base metal strip coated with a corrosion-resistant metal alloy and a heat created intermetallic layer formed between said base metal strip and said metal alloy coating, said base metal strip formed of a majority of copper and having a surface which includes copper prior to being coated with said metal alloy coating, said metal alloy coating including about 9-80 weight percent zinc and at least about 15 weight percent tin, said tin content plus said zinc content of said metal alloy coating at least about 90 weight percent, said base metal strip having an average thickness of about 381-2540 microns, said metal alloy coating having an average thickness of about 2-1250 microns, said base metal strip having a thickness greater than said metal alloy coating thickness, said heat created intermetallic layer including a majority of copper plus zinc and having an average thickness of about 0.3-20 microns.
- 35. A corrosion-resistant metal strip having a copper base metal strip coated with a multi-phase tin-zinc alloy coating and a heat created intermetallic layer formed between said copper base metal strip and said tin-zinc alloy coating, said metal alloy including at least about 15 weight percent tin and at least an amount of zinc to form said multi-phase tin-zinc alloy, said tin content plus said zinc content at least about 90 weight percent, said tin-zinc alloy including at least one metal additive to positively affect the chemical and/or physical properties of said tin-zinc alloy, said metal additive including a metal selected from the group consisting of aluminum, antimony, bismuth, chromium, copper, lead, magnesium, manganese, molybdenum, nickel, silicon, titanium, and mixtures thereof, said copper base metal strip having an average thickness of about 381-1270 microns, said tin-zinc coating having an average thickness of about 2-77 microns, said heat created intermetallic layer including a majority of copper plus zinc and having an average thickness of about 0.3-20 microns, said thickness of said tin-zinc alloy coating being greater than said thickness of said heat created intermetallic layer.
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Current AssigneeRevere Copper Products, Inc.
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Original AssigneeThe Louis Berkman Company
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InventorsZamanzadeh, Mehrooz, Carey, Jay F. II
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Primary Examiner(s)Zimmerman, John J.
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Application NumberUS10/254,824Publication NumberTime in Patent Office889 DaysField of Search428/647, 428/658, 428/648, 428/646, 428/659, 428/939US Class Current428/647CPC Class CodesB32B 15/01 all layers being exclusivel...B32B 15/013 one layer being formed of a...B32B 15/015 the said other metal being ...C22C 13/00 Alloys based on tinC22C 13/02 with antimony or bismuth as...C22C 18/00 Alloys based on zincC22C 30/04 containing tin or leadC22C 30/06 containing zincC23C 2/024 by cleaning or etchingC23C 2/026 Deposition of sublayers, e....C23C 2/06 Zinc or cadmium or alloys b...C23C 2/08 Tin or alloys based thereonC23C 2/28 Thermal after-treatment, e....C23C 2/29 Cooling or quenchingY10S 428/939 Molten or fused coatingY10T 428/12493 Composite; i.e., plural, ad...Y10T 428/12715 Next to Group IB metal-base...Y10T 428/12736 Al-base componentY10T 428/12792 Zn-base componentY10T 428/12799 Next to Fe-base component [...View All
