ECM Study in a Closed-Cell System

1 January 1971

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

Vol. 118 (11) , 1870-1876
https://doi.org/10.1149/1.2407855

Abstract

The electrode reactions involved in electrochemical machining (ECM) of mild steel in were studied in a closed cell system at constant current. The cathodic reaction is found to be essentially hydrogen evolution. At the anode, in addition to the metal removal, significant amounts of oxygen are produced and the total anodic current efficiency for Fe⁺⁺ plus O₂ formation is about 100%. Reduction of to during ECM is caused by the chemical reaction between and Fe⁺⁺. The experimental results concerning the anodic process are qualitatively explained by the presence of porous anodic oxide films.

Keywords

STEEL
ELECTROCHEMICAL ELECTRODES
CELLS (ELECTRIC)
ELECTROCHEMICAL MACHINING
SURFACE CHEMISTRY
ELECTROLYTES
SODIUM COMPOUNDS
CHLORINE COMPOUNDS
OXYGEN COMPOUNDS
ELECTROCHEMICAL MACHINING (ECM)
NACLO3
CURRENT EFFICIENCY
OXIDE FILMS

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