The Influence of Phase Dispersion of Sulfide Alloys on their Electrochemical Properties / Selivanov E. N.,Nechvoglod O. V.,Mamyachenkov S. V. // . - 2011. - V. 312-315, l. 1,2. - P. 719-724.

ISSN/EISSN:

1012-0386 / нет данных

Type:

Proceedings Paper

Abstract:

It has been found that the dispersion of phases in copper-nickel sulfide-metal alloys influences their electrochemical properties. X-ray diffraction and optical and electron microscopy have been used to study structural characteristics of the samples prepared by crystallization of sulfide melts at different rates of 10 divided by 10(3) K/s. High-rate cooling of a converter matte leads to the formation of nonequilibrium sulfide phases and a metallic component dissolved in these phases. The electrochemical oxidation of copper-nickel sulfide alloys has been studied by voltammetry with a linear potential sweep. The data point to a reduction of the limiting oxidation currents of the sulfide alloys prepared by high-rate cooling. The compositions of the intermediate phases and solid products of the electrochemical oxidation, which form the passivating layer, have been determined. The electrolysis of dispersed sulfide alloys allows performing the process at low densities of the current and, thus, the diffusion limitations have been removed.

Author keywords:

copper sulfide; nickel sulfide; matt; alloy; dispersion; electrochemistry; passivation

DOI:

10.4028/www.scientific.net/DDF

Web of Science ID:

ISI:000297606300122

Соавторы в МНС:

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Другие поля

Поле	Значение
Editor	Ochsner, A and Murch, GE and Delgado, JMP
Booktitle	DIFFUSION IN SOLIDS AND LIQUIDS VI, PTS 1 AND 2
Series	Defect and Diffusion Forum
Note	6th International Conference on Diffusion in Solids and Liquids, Paris, FRANCE, JUL 05-07, 2010
Publisher	TRANS TECH PUBLICATIONS LTD
Address	LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND
Language	English
Research-Areas	Chemistry; Materials Science
Web-of-Science-Categories	Chemistry, Physical; Materials Science, Multidisciplinary
Author-Email	pcmlab@mail.ru
ResearcherID-Numbers	Selivanov, Evgeniy/T-7296-2017
Usage-Count-Since-2013	1
Doc-Delivery-Number	BXY28