Journal ArticleDOI
Electroplating of Fe- Ni alloys: a sulphate- amine bath *
S. N. Srimathi,S.M. Mayanna +1 more
TLDR
In this paper, thin films of Fe-Ni alloys have been electroplated from acidic sulphate bath (0.06 mol dm−3 NiSO4, O.O15 mol Dm −3 FeSO4 and O.Abstract:
Thin films of Fe-Ni alloys have been electroplated from acidic sulphate bath (0.06 mol dm−3 NiSO4, O.O15 mol dm−3 FeSO4, 0.005 mol dm−3 ascorbic acid, 20 g dm−3 boric acid and 1 g dm−3 saccharin) containing aliphatic amines. The percentage Ni in the alloy varied with bath composition (Fe/Ni), current density, stirring of the medium, nature and concentration of the amine. Increase of temperature and pH of the medium increased the percentage Ni in the deposit. The composition of the alloy remained constant with thickness of the film. The cathodic current efficiency depends on the plating variables. The plating potential in acidic sulphate bath was shifted in the less noble direction by the presence of amines. Smooth and bright films are obtained with small grain size when the Ni in the film is 75% or above. Electroplating conditions are optimized to get thin, magnetic 20∶80 Fe-Ni films.read more
Citations
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Journal ArticleDOI
Mass transport effects on the electrodeposition of iron-nickel alloys at the presence of additives
TL;DR: In this article, the effect of the rotation speed of the disc electrode and the presence of organic additives on the deposition of Fe-Ni alloys are evaluated, and the alloy composition is determined by solution equilibria, mass transfer of the electroactive species within the diffusion layer and by the surface coverage of the additives.
Journal ArticleDOI
Studies of the mechanism for the electrodeposition of FeCo alloys
Rodnei Bertazzoli,Derek Pletcher +1 more
TL;DR: In this article, it was shown that the composition of the alloy is mainly determined by the ratio of Fe(II)/Co(II) in solution and only slightly by temperature or potential/current density.
Journal ArticleDOI
Mesoscale structure in electrodeposited nanocrystalline Ni–Fe alloys
TL;DR: In this paper, a mesoscale structure in nanocrystalline Ni-Fe electrodeposits, existing at a length scale between the nanometer-scale grains and the macro-scale dimensions of the electrodeposit, is presented.
Journal ArticleDOI
Current pulse plating of nickel-iron alloys on rotating disk electrodes
K.-M. Yin,S.-L. Jan +1 more
TL;DR: In this paper, the influence of mass transfer on the nickel and iron deposition rates is through the chemical equilibrium of the respective surface electroactive species of nickel and ferrous hydroxyl ions.
Journal ArticleDOI
Synthesis of nanocrystalline permalloy
C. Cheung,P. Nolan,U. Erb +2 more
TL;DR: In this paper, the advantages of nano-processing for the overall performance characteristics of soft magnetic materials used in recording head applications are discussed and preliminary results pertaining to the synthesis of nanoprocessed permalloy for this application are presented.
References
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Book
Advanced Inorganic Chemistry
TL;DR: Cotton and Wilkinson's Advanced Inorganic Chemistry (AIC) as discussed by the authors is one of the most widely used inorganic chemistry books and has been used for more than a quarter century.
Journal ArticleDOI
Electrodeposition of binary magnetic alloys
TL;DR: In this paper, the electrodeposition of binary magnetic alloys such as Fe-Ni, Co-Ni and Fe-Co of iron group metals and their practical applications are reviewed with special reference to the type of alloy and the bath characteristics.