Abstract
In this paper, the electrochemical phase isolation (EPI) is discussed as a process at higher current densities in which the desirable enrichment of precipitated phase particles leads to a blocking of the surface. This effect impedes the matrix dissolution rate. Under galvanostatic conditions, a higher current causes a heat build-up within the porous layer and accelerates the kinetics up to the moment when the saturation concentration is reached in the pores. Under this aspect, experiments for iron carbide isolation from a steel matrix are described.
Similar content being viewed by others
References
W. Gruner, J. Kunath, A. Veres,Mikrochim. Acta [Wien] 1986,I, 281–290.
I. I. Sucharev, V. V. Zdanov, A. A. Ravdel,Zash. Met. 1985,21, 566.
J. Kunath, R. Stahlberg,Arch. Eisenhüttenwes. 1983, 54, 31.
W. Koch,Metallkundliche Analyse, Verlag Chemie, Düsseldorf-Weinheim, 1965.
T. Masumoto,Nippon-Kinzoku-Gakkai-Shi 1969,33, 403.
J. W. Tester, H. S. Isaacs,J. Electrochem. Soc. 1975,122, 1438.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kunath, J., Gruner, W. Electrochemical characterization of solid materials in volume range II. Physical process parameters in phase isolation process. Mikrochim Acta 88, 291–300 (1986). https://doi.org/10.1007/BF01206722
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01206722