Selective Dissolution of Cd‐Mg Alloys: I . Static Samples

1 February 1980

journal article
Published by The Electrochemical Society in Journal of the Electrochemical Society

Vol. 127 (2) , 255-258
https://doi.org/10.1149/1.2129651

Abstract

The susceptibility to selective dissolution of Cd‐Mg alloys in deaerated solutions, at room temperature to 75°C, was studied. The range of compositions studied was Cd‐11 a/o Mg (Cd‐2.6 w/o Mg) to Cd‐50 a/o Mg (Cd‐18 w/o Mg). Between −0.9 and −0.5V_(NHE), selective dissolution of magnesium was found. Cadmium was accumulated on the surfaces as a soft, crystalline, metallic film, most probably as a porous layer. The selective dissolution rate was four orders of magnitude faster than that reported in literature for similar compositions of Cu‐Zn brass in solution. The selective dissolution became faster as the temperature and the magnesium content of the alloy increased.

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