Corrosion Behavior in Acid and Alkaline Media of Nickel Coatings Deposited at Room Temperature.

Authors :: Makarova, I. V.
Kharitonov, D. S.
Dobryden', I. B.
Chernik, A. A.
Source :: Russian Journal of Applied Chemistry; Sep2018, Vol. 91 Issue 9, p1441-1450, 10p
Publication Year :: 2018
Abstract: Impedance spectroscopy, chronovoltammetry, chronopotentiometry, scanning electron microscopy, and atomic-force microscopy were used to examine the corrosion behavior in acid and alkaline media and the morphology of nickel coatings electrodeposited from acetate, tartrate, and isobutyrate electrolytes at a temperature of 20-25°C. Models describing the nickel corrosion processes in H<subscript>2</subscript>SO<subscript>4</subscript> and NaOH solutions were suggested. It was found that nickel coatings formed from isobutyrate electrolytes have the highest corrosion resistance. [ABSTRACT FROM AUTHOR]

Subjects :: NICKEL-plating
ALKALINE earth metals
TEMPERATURE effect
CHRONOAMPEROMETRY
SOLUTION (Chemistry)
CORROSION resistance

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