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Study of the electrocrystallization of nickel by ellipsometry

✍ Scribed by M.Y. Abyaneh; W. Visscher; E. Barendrecht

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
469 KB
Volume
28
Category
Article
ISSN
0013-4686

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✦ Synopsis

The initial stages of the electrocrystallization of nickel are studied by simultaneous ellipsometric and amperometric investigation during potentiostatic deposition. Theoretical equations for A and Y-time transients are derived for both conical and hemispherical growth forms. It is shown that these equations can adequately describe the experimental optical transient data. Moreover, the ellipsometric monitoring of the deposition process gives information regarding the topography of the deposit.

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O n the surface of iron deposited from a ferrous sulphate solution under potentiostatic conditions tetragonal and trigonal growth pyramids are formed . At low overvoltages the tetragonal pyramids, and at high overvoltages the trigonal pyramids, prevail . The respective tangents of the angles between