Title
Electronic structure study of ac modified passive film on stainless steel
Abbreviated Journal Title
Br. Corros. J.
Keywords
MODEL; IRON; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering
Abstract
The semiconductor properties, electronic structure and reduction susceptibility of passive films on AISI type 304 stainless steel in dilute sulphuric acid solutions hat e been studied by electrochemical impedance spectroscopy measurements, Mott-Schottky analysis and the photoelectrochemical technique. The passive film shows features of an amorphous or highly disordered n type semiconductor. The donor level is in the range of 10(26)-10(27) m(-3) and increases with the amplitude of ac potential. The passive film thickness increases linearly, with the amplitude of the applied ac potential. The reduction susceptibility of the passive film is also decreased with the amplitude of the applied ac. The photoelectrochemical measurements also indicate that the passive film is n type semiconductor and the photocurrent is decreased after ac, modulation. It might be related to the surface chromium accumulation.
Journal Title
British Corrosion Journal
Volume
37
Issue/Number
1
Publication Date
1-1-2002
Document Type
Article
Language
English
First Page
18
Last Page
22
WOS Identifier
ISSN
0007-0599
Recommended Citation
"Electronic structure study of ac modified passive film on stainless steel" (2002). Faculty Bibliography 2000s. 3168.
https://stars.library.ucf.edu/facultybib2000/3168