Stock material or miscellaneous articles – All metal or with adjacent metals – Foil or filament smaller than 6 mils
Patent
1992-10-26
1993-10-05
Zimmerman, John
Stock material or miscellaneous articles
All metal or with adjacent metals
Foil or filament smaller than 6 mils
428658, 428674, 428935, 205141, 205215, 205243, B32B 1520, C25D 706, C25D 1138
Patent
active
052503631
ABSTRACT:
A technique for improving the tarnish and oxidation resistance of metallic substrate is disclosed. The substrate is immersed in an aqueous solution containing sodium hydroxide, zinc ions and chromium (VI) ions. Either the temperature of the aqueous solution or the current density is selected so that at least one surface of the substrate is coated with a nontransparent layer. A chromium-zinc coating is electrolytically applied. The coating provides tarnish resistance at temperatures in excess of 230.degree. C. The coating is removable by immersion in sulfuric acid. Improved results are obtained by rinsing deionized water containing a small amount of an alkaline or alkaline earth hydroxide.
REFERENCES:
patent: 2030601 (1936-02-01), McDonald
patent: 2080891 (1935-02-01), McDonald
patent: 2364993 (1944-12-01), Meyer
patent: 2412543 (1946-12-01), Tanner
patent: 2415651 (1947-02-01), Nechamkin
patent: 2418806 (1947-04-01), Thompson et al.
patent: 2460896 (1949-02-01), Meyer
patent: 2481854 (1949-09-01), MacMahon
patent: 2647865 (1953-08-01), Freud
patent: 3106484 (1963-10-01), Miller
patent: 3198672 (1965-08-01), DeHart
patent: 3323881 (1967-06-01), Nelson et al.
patent: 3585010 (1971-06-01), Luce et al.
patent: 3625844 (1971-12-01), McKean
patent: 3677828 (1972-07-01), Caule
patent: 3716427 (1973-02-01), Caule
patent: 3764400 (1973-10-01), Caule
patent: 3816142 (1974-06-01), Lindemann
patent: 3853716 (1974-12-01), Yates et al.
patent: 3857681 (1974-12-01), Yates et al.
patent: 3857683 (1974-12-01), Castonquay
patent: 4048381 (1977-09-01), Adaniya et al.
patent: 4049481 (1977-09-01), Morisaki
patent: 4064320 (1977-12-01), Adaniya et al.
patent: 4127438 (1978-11-01), Babcock et al.
patent: 4131517 (1978-12-01), Mitsuo et al.
patent: 4203809 (1980-05-01), McKean
patent: 4358479 (1982-11-01), Canestaro
patent: 4376154 (1983-03-01), Nakatsugawa
patent: 4386139 (1983-05-01), Nakatsugawa
patent: 4387006 (1983-06-01), Kajiwara et al.
patent: 4407900 (1983-10-01), Kirihara et al.
patent: 4432846 (1984-02-01), Honeycutt, III
patent: 4456508 (1984-06-01), Torday et al.
patent: 4468293 (1984-08-01), Plan et al.
patent: 4495008 (1985-01-01), Bruno et al.
patent: 4497876 (1985-02-01), Kidon
patent: 4515671 (1985-05-01), Polan et al.
patent: 4572768 (1986-02-01), Wolski et al.
patent: 4640747 (1987-02-01), Ueno et al.
patent: 4642161 (1987-02-01), Akahoshi et al.
patent: 4647315 (1987-03-01), Parthasarathi et al.
patent: 4702793 (1987-10-01), Garlough et al.
patent: 4702802 (1987-10-01), Umino et al.
patent: 4775444 (1988-10-01), Cordani
patent: 4902551 (1990-02-01), Nakaso et al.
patent: 4939316 (1990-07-01), Mahulikar et al.
patent: 4997516 (1991-03-01), Adler
patent: 5006200 (1991-04-01), Chen
patent: 5022968 (1991-06-01), Lin et al.
patent: 5037482 (1991-08-01), Kukanskis et al.
patent: 5098796 (1992-03-01), Lin et al.
Olin Corporation
Rosenblatt Gregory S.
Weinstein Paul
Zimmerman John
LandOfFree
Chromium-zinc anti-tarnish coating for copper foil having a dark does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Chromium-zinc anti-tarnish coating for copper foil having a dark, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chromium-zinc anti-tarnish coating for copper foil having a dark will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1002617