The Effects of Al³⁺ and Cr3+ on Nickel Electrowinning from Sulfate Electrolyte

Abstract

The effects of the impurities Al3+ and Cr3+ on the current efficiency, physical appearance and surface morphology of nickel deposited from sulfate electrolytes were determined. The current efficiency decreased in the presence of these impurities over the concentration range studied, the maximum being 40 mg/l. Changes in the surface morphology, internal stress and polarization behaviour were also observed as the impurity concentration increased. Based on the physical appearance of the electrodeposited nickel, the tolerance limits of the impurities in the electrolyte are reported.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Electrowinning; Impurities; Nickel

International Standard Serial Number (ISSN)

0256-1654

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Scimago Labs, All rights reserved.

Publication Date

01 Dec 2000

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