On the Validity of Wagner's Theory of Electropolishing

According to the C. Wagner theory, the diffusion of one reactant is controlling factor in the electropolishing process, and the plateau on the current density vs. voltage curve results in a much lower acceptor concentration in comparison to the bulk concentration. An alternative theory was proposed...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the Electrochemical Society 1979-05, Vol.126 (5), p.795-797
Main Authors: Hojka, H. M., Zamin, M., Murthy, M. K.
Format: Article
Language:English
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:According to the C. Wagner theory, the diffusion of one reactant is controlling factor in the electropolishing process, and the plateau on the current density vs. voltage curve results in a much lower acceptor concentration in comparison to the bulk concentration. An alternative theory was proposed by Nicholas and Tegart without making any assumption about the mechanism of the polishing process. Experiments were performed on Ta to distinguish between the two theories. The results are consistent with the of Wagner but not with that of Nicholas and Tegart. The Wagner acceptor hypothesis has important implications on the theory and practice of electropolishing.--W.C.
ISSN:0013-4651
1945-7111
DOI:10.1149/1.2129141