Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Depositing predominantly alloy coating
Patent
1997-08-25
1999-08-03
Mayekar, Kishor
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Depositing predominantly alloy coating
205119, 106 127, C25D 312
Patent
active
059320826
ABSTRACT:
An improved electroplating bath, complexing agent, product and method for producing nickel-rich nickel-iron alloys, such as Permalloy, having about 22% iron and 78% nickel. The improved electroplating bath contains a small amount of an organic amine complexing agent such as ethylenediamine or diethylenetriamine which increases the nickel/iron mass ratio of the deposit, causes nickel to be deposited in favor of iron, reduces the sensitivity of the deposit composition to the iron content of the bath and the applied current density. Further, the pH of the bath is adjusted to about 5.0 to stabilize the complexes and tartaric acid is added to complex ferric ion and thus prevent its precipitation. The organic amine complexing agents useful in accordance with the present invention are agents which complex with nickel and include ethylenediamine and diethylenetriamine each having at least two amine groups with each of the amine groups separated by two carbons.
REFERENCES:
patent: 3045334 (1962-07-01), Berzins
patent: 3706635 (1972-12-01), Kowalski
patent: 3878067 (1975-04-01), Tremmel
patent: 3974044 (1976-08-01), Tremmel
patent: 4002543 (1977-01-01), Clauss et al.
patent: 4102756 (1978-07-01), Castellani et al.
patent: 4134802 (1979-01-01), Herr
patent: 4179343 (1979-12-01), Tremmel
patent: 4228201 (1980-10-01), Feldstein
patent: 4239587 (1980-12-01), Koel et al.
patent: 4371861 (1983-02-01), Abdelrahman et al.
patent: 4421611 (1983-12-01), Cameron
patent: 4434030 (1984-02-01), Vitkova et al.
patent: 4450051 (1984-05-01), Tremmel
patent: 4623439 (1986-11-01), Mitsuoka et al.
patent: 4717458 (1988-01-01), Martin et al.
patent: 4770751 (1988-09-01), Kawagishi et al.
patent: 4770788 (1988-09-01), Vignola
patent: 4780781 (1988-10-01), Sano et al.
patent: 4983263 (1991-01-01), Yasuda et al.
patent: 5146299 (1992-09-01), Lampe et al.
patent: 5178745 (1993-01-01), Abys et al.
patent: 5194140 (1993-03-01), Dobrovolskis et al.
patent: 5234574 (1993-08-01), Tsuji et al.
patent: 5258200 (1993-11-01), Mayernik
patent: 5302464 (1994-04-01), Nomura et al.
patent: 5403650 (1995-04-01), Baudrand et al.
patent: 5417840 (1995-05-01), Block et al.
Harris, Thomas M., Wilson, Jennifer L. (St. Clair), Bleakley, Matthew; Effect of Ethylenediamine on the Electrodeposition of Ni-Fe Alloys; Department of Chemistry, University of Tulsa; 1999, (no month available).
Srimathi, S.N. and Mayanna, S.M., Nickel-Iron Alloy Plating In Pyrophosphate-Ethylenediamine Baths, Plating and Surface Finishing, Dec., 1985, pp. 76-79.
Harris, Thomas M., Huynh, Tuyen and St. Clair, Jennifer, Abstract No. 333 Anomalous Codeposition of Ni-Fe Alloys: Effect of Complexants, Extended Abstracts, vol. 95-2, Fall Meeting, Chicago, Illinois, Oct. 8-13, 1995, p. 542.
Sree, Vasanta (Miss) and Char, T.L. Rama, Electrodeposition of Nickel-Iron Alloys From the Pyrophosphate Bath, Electrochemistry Laboratory, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, India. Metal Finishing, Aug., 1961, pp. 49-55.
CA 1995: 613440 no month available.
Harris Thomas M.
Wilson Jennifer Lyn
Mayekar Kishor
The University of Tulsa
LandOfFree
Electroplating bath for nickel-iron alloys and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electroplating bath for nickel-iron alloys and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electroplating bath for nickel-iron alloys and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-846441