화학공학소재연구정보센터
Applied Surface Science, Vol.263, 29-37, 2012
Electrochemical investigation of passive film in pre-deformation AISI 304 stainless steels
The electrochemical measures in deformed AISI 304 stainless steels ranged from 0% to 24% were investigated. With the increasing of the strain alpha'-martensite was gradually increasing. Moreover, the morphologies and densities of dislocations changed with increasing strain. The Mott-Schottky plots showed that the maximum total of donor and acceptor densities in passive film occurred in borate buffer solution when epsilon-martensite was most, while in borate buffer solution with 5000 ppm Cl- the maximum total of donor and acceptor densities occurred when the content of alpha-martensite was most. These results were proven by further impedance spectroscopy experiments. (C) 2012 Elsevier B.V. All rights reserved.