Aqueous electrolytes and method for electrodepositing nickel-cobalt alloys
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 21, 1986
Grant Date -
N/A
app pub date -
May 1, 1985
filing date -
May 9, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process and compositions for the electrodeposition of hard, tarnish-resistant, white shining nickel- and cobalt-containing coatings using aqueous acidic baths containing metal ions and boric acid and also, as shine promotor, an aliphatic aldehyde and an aromatic carbonyl compound and, optionally, wetting agents, wherein aqueous solutions containing nickel, cobalt and chloride ions and boric acid and having a pH-value of from 3.6 to 4.8 and a nickel to cobalt ion ratio of from 8:1 to 20:1 are prepared, an aqueous solution of an aliphatic aldehyde and an aromatic, water-soluble carbonyl compound in a quantitative ratio of from 20:1 to 50:1 is added as shine promotor, layers containing nickel and cobalt are electrodeposited onto base material suitable for nickel plating at a temperature of from 50.degree. to 55.degree. C. and at a cathodic current density of up to 7 A.dm.sup.-2 using nickel and optionally, cobalt metal in a ratio by weight of from 5:1 to 10:1 as the anode material.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully