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Corrosion-resistant nickel thin films by electroless deposition in foam of electrolyte

Published online by Cambridge University Press:  29 January 2019

Takahiro Furuhashi
Affiliation:
Yamada Co. Ltd., Ryouke, Naka-ku, Hamamatsu, Shizuoka 430-0852, Japan
Yoshiyasu Yamada
Affiliation:
Yamada Co. Ltd., Ryouke, Naka-ku, Hamamatsu, Shizuoka 430-0852, Japan
Masato Hayashi
Affiliation:
Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
Shoji Ichihara
Affiliation:
Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
Hiroaki Usui*
Affiliation:
Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
*
Address all correspondence to Hiroaki Usui at [email protected]
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Abstract

Nickel thin films were prepared by electroless plating in a foam of electrolyte generated by bubbling nitrogen into a hypophosphite-based electroless plating solution added with surfactants of sulfuric acid monododecyl ester sodium salt and ammonium pentadecafluorooctanoate (APFO). Ferroxyl test revealed that the films deposited in foam had substantially higher corrosion resistance than those deposited in liquid. Even with a film thickness of only 1.5 µm, the fraction of corroded area was as small as 0.002% when the film was deposited in the foam. The notable improvement in the corrosion resistance was made possible by adding APFO as the surfactant.

Type
Research Letters
Copyright
Copyright © Materials Research Society 2019 

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