The Anodic Dissolution of Deformed Mg in H₂SO₄

Abstract

A study has been made of the effect of the deformation of pure polycrystalline Mg undergoing anodic dissolution in sulphuric acid. In 0·05 and 0·10 N H2SO4, deviations from linearity in anodic dissolution rate vs. c.d. plots occur at approximately 18 and 40 mA/cm3. Examination of the metal surfaces following dissolution reveals a black to grey film (containing dispersed metallic particles) forming above and in the region of these current densities. The maximum points in the positive Δ-c.d. curves for deformed metal anodically dissolving in 0·05 and 0·10 N H2SO4 are found at approximately 14 and 38 mA/cm2 respectively. These results appear to confirm previous studies attributing the maximum and the subsequent decrease in δ (difference effect) primarily to increased anodic disintegration. It would appear that the deformation of the metal does not play a significant role in the mechanism of anodic disintegration. © 1967 Pergamon Press Ltd.

Department(s)

Chemistry

Second Department

Materials Science and Engineering

International Standard Serial Number (ISSN)

0010-938X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1967 Elsevier, All rights reserved.

Publication Date

01 Jan 1967

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