Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1989-04-10
1991-05-28
Group, Karl
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
106 127, C23C 1834
Patent
active
050191632
ABSTRACT:
Corrosion and wear resistant metallic compositions containing nickel, cobalt, boron and thallium and articles coated therewith are described. Preferred electroless coatings contain nickel and cobalt in a ratio of about 45:1 to about 4:1 and are deposited as hard, amorphous alloy nodules of high nickel content dispersed or rooted in a sofer alloy of high cobalt content. The coatings are preferably deposited on catalytically active substrates from an electroless coating bath containing nickel ions, cobalt ions, thallium ions, metal ion complexing agents and a borohydride reducing agent at pH about 12 to about 14. With post-coating heat treatment coated surfaces exhibit hardness levels as high as about 1300 Knoop.
REFERENCES:
patent: 2990296 (1961-06-01), Hoke
patent: 3045334 (1962-07-01), Berzins
patent: 3062666 (1962-11-01), McLeod
patent: 3208353 (1966-08-01), Melillo
patent: 3295999 (1967-01-01), Klein et al.
patent: 3338726 (1967-08-01), Berzins
patent: 3378400 (1968-04-01), Sickles
patent: 3432338 (1969-03-01), Sickles
patent: 3562000 (1971-02-01), Parker
patent: 3674447 (1972-07-01), Bellis
patent: 3753667 (1973-08-01), Metzger et al.
patent: 4621026 (1986-11-01), Robinson
Brenner et al., "Deposition of Nickel and Cobalt by Chemical Reduction", Int. Research National Bureau of Standards vol. 39, pp. 385-395 Nov. (1947).
Harold Narcus, An Introduction to Chemical Nickel Plating with Sodium Borohydride or Amine Boranes as Reducing Agent, Plating, Apr. 1967, pp. 380-381.
G. O. Malory, The Electroless Nickel-Boron Plating Bath: Effects of Variables on Deposit Properties, Plating, Apr., 1971, pp. 319-326.
Von K. Lang, Ein Neues Verfahren Zur Stromlosen Vernickelung, Metalloberflache, Aug. 1965, pp. 257-262.
"The Chemical Nickel Plating with Sodium Borohydride or Amine Boranes: The Nibodur Process", K. Lang, Electropolating and Metal Finishing, Mar. 1966, pp. 86-91 and 96.
"Untersuchungen zur Abscheidung von Nickel-Bor-Legierungsschichten aus Modifizierten Elektrolyten", (Deposition of Nickel-Boron Alloy Layers from Modified Electrolytes), Metall, vol. 39, pp. 238-244, Mar. 1985, K. Stallman & H. Speckhardt.
LandOfFree
Corrosion/wear-resistant metal alloy coating compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Corrosion/wear-resistant metal alloy coating compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Corrosion/wear-resistant metal alloy coating compositions will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-33597