Abstract
The Impedance characteristics of passive films on iron have been investigated focused on the electrical potential profile in the film. Electrochemical redox reactions on the passive films were not affected by the film thickness even when increased to several ten times larger than the usual passive films. At several stages of the cathodic reduction of the films, a contact resistance of mercury through the film was measured and it was found that the resistivity of the film caused at the outermost part of the passive layer. It was concluded that the highest electrical fields in the passive films existed in this part, and that this part has different properties from the rest of the film.
| Original language | English |
|---|---|
| Pages (from-to) | 673-678 |
| Number of pages | 6 |
| Journal | Corrosion Science |
| Volume | 31 |
| Issue number | C |
| DOIs | |
| Publication status | Published - 1990 |
| Externally published | Yes |
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Keywords
- Borate solution
- Impedance characteristics
- Iron
- Mercury contact method
- Passive film
- Surface layer
ASJC Scopus subject areas
- Materials Science(all)
- Metals and Alloys
Cite this
The impedance characteristics of passive films on iron. / Noda, Kazuhiko; Tsuru, Tooru; Haruyama, Shiro.
In: Corrosion Science, Vol. 31, No. C, 1990, p. 673-678.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The impedance characteristics of passive films on iron
AU - Noda, Kazuhiko
AU - Tsuru, Tooru
AU - Haruyama, Shiro
PY - 1990
Y1 - 1990
N2 - The Impedance characteristics of passive films on iron have been investigated focused on the electrical potential profile in the film. Electrochemical redox reactions on the passive films were not affected by the film thickness even when increased to several ten times larger than the usual passive films. At several stages of the cathodic reduction of the films, a contact resistance of mercury through the film was measured and it was found that the resistivity of the film caused at the outermost part of the passive layer. It was concluded that the highest electrical fields in the passive films existed in this part, and that this part has different properties from the rest of the film.
AB - The Impedance characteristics of passive films on iron have been investigated focused on the electrical potential profile in the film. Electrochemical redox reactions on the passive films were not affected by the film thickness even when increased to several ten times larger than the usual passive films. At several stages of the cathodic reduction of the films, a contact resistance of mercury through the film was measured and it was found that the resistivity of the film caused at the outermost part of the passive layer. It was concluded that the highest electrical fields in the passive films existed in this part, and that this part has different properties from the rest of the film.
KW - Borate solution
KW - Impedance characteristics
KW - Iron
KW - Mercury contact method
KW - Passive film
KW - Surface layer
UR - http://www.scopus.com/inward/record.url?scp=0025595187&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025595187&partnerID=8YFLogxK
U2 - 10.1016/0010-938X(90)90179-9
DO - 10.1016/0010-938X(90)90179-9
M3 - Article
AN - SCOPUS:0025595187
VL - 31
SP - 673
EP - 678
JO - Corrosion Science
JF - Corrosion Science
SN - 0010-938X
IS - C
ER -