Effect of the Polarization Conditions on the Structural Properties of Zinc Dendritic Deposits / Ostanina T. N.,Rudoi V. M.,Darintseva A. B.,Cheretaeva A. O.,Demakov S. L.,Patrushev A. V. // POWDER METALLURGY AND METAL CERAMICS. - 2014. - V. 52, l. 9-10. - P. 489-497.

ISSN/EISSN:

1068-1302 / 1573-9066

Type:

Article

Abstract:

The influence of the polarization conditions on growth dynamics and structure of electrolytic zinc dendritic deposits obtained at room temperature from electrolyte with 0.3 mol/l zinc oxide and 4 mol/l sodium hydroxide is studied. The electrodeposition was performed at constant and pulsed current and potential. Constant-current chronopotentiometry was used to determine the surface area of the dendritic deposits in situ. The zinc microstructure was studied with electron microscopy. The deposit surface produced in pulsed current conditions intensively grew during the first 5 minutes of electrolysis and then changed insignificantly. In conditions of potentiostatic electrolysis, the coefficient K, which is the ratio of the deposit surface area to the substrate area, increased linearly with time; in pulsed potential conditions, it increased as a power-law functions. The deposits obtained in potentiostatic conditions show the lowest density that slightly varies with thickness. The density of the deposits crystallized in pulsed current conditions sharply increased upon the completion of active dendrite extension.

Author keywords:

dendritic deposits; zinc; electrodeposition; microstructure; pulsed conditions

DOI:

10.1007/s11106-014-9551-0

Web of Science ID:

ISI:000331981800001

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JAN
Publisher	SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013 USA
Language	English
EISSN	1573-9066
Research-Areas	Materials Science; Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Materials Science, Ceramics; Metallurgy \& Metallurgical Engineering
Author-Email	ostni@mail.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}11-03-00226]
Funding-Text	The study was supported by the Russian Foundation for Basic Research (Grant No. 11-03-00226).
Number-of-Cited-References	12
Usage-Count-Since-2013	8
Journal-ISO	Powder Metall. Met. Ceram.
Doc-Delivery-Number	AB7PB