Sobha , J. and Malathy, P. and Natarajan, S.R. and Subramanian, R.
(1986)
Copper undercoats on the corrosion resistance of bright nickel-chromium and of nickel-iron-chromium electrodeposits on steel substrates.
Bulletin of Electrochemistry , 2 (3).
pp. 251-255.
ISSN 0256-1654
Abstract
The present paper deals with the testing of the newly developed nickel-iron plating process with regard to
the corrosion performance of coatings produced. Aceticacid saltspray method he6 been used as the test
method.The results show that mild steel plated with nickel iron-chromium systems with iron contents up
to 35 %are suitable for indoor applications though slightly inferior to nickelchromium systems. Uterature
reports suggest that nickelchromium systems for outdoor applications are to be modified by inducing
microporosity in the chromium top layer and by giving suitable undercoats. The use of a microporous
chromium topcoat in improving the performance of nickel and nickel iron coatings are tested. The effect
of copper undercoats on the corrosion performance of nickel and nickel iron-chromium systems are
compared and it is concluded that a copper undercoat is more beneficial for a nickel ironchromium
system than a ni~ekhromium system.
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