Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 440-450 |
| Seitenumfang | 11 |
| Fachzeitschrift | Materials and corrosion |
| Jahrgang | 71 |
| Ausgabenummer | 3 |
| Publikationsstatus | Veröffentlicht - 3 März 2020 |
| Extern publiziert | Ja |
Abstract
Colored oxide films that form on ferritic stainless steel in a high-temperature, oxidizing environment and correspond to different chemical compositions can cause a deterioration of pitting resistance and corrosion performance. Herein, optical spectroscopic and electrochemical techniques have been used to reveal the relationship between color, chemical composition, and corrosion resistance of oxide films formed in the temperature range from 400°C to 800°C for 30 min and at 800°C for 10, 20, 30, and 60 min. The substrate with a thin and dense passivation film leads to a low pitting potential but high corrosion resistance. Oxide films of yellowish or brownish color formed below 600°C are mainly iron oxides, which correspond to low corrosion resistance. No passivation characteristics can be observed for polarization curves of oxide films formed at 500°C and 600°C. The color of oxide films varies from blue to dark gray with the increase of oxidation time at 800°C. Corrosion resistance changes with different proportions of Fe3O4, Cr2O3, and FeCr2O4. The gray oxide films formed at 800°C for 30 min exhibit the lowest pitting susceptibility and the highest corrosion resistance.
ASJC Scopus Sachgebiete
- Umweltwissenschaften (insg.)
- Umweltchemie
- Ingenieurwesen (insg.)
- Werkstoffmechanik
- Ingenieurwesen (insg.)
- Maschinenbau
- Werkstoffwissenschaften (insg.)
- Oberflächen, Beschichtungen und Folien
- Werkstoffwissenschaften (insg.)
- Metalle und Legierungen
- Werkstoffwissenschaften (insg.)
- Werkstoffchemie
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in: Materials and corrosion, Jahrgang 71, Nr. 3, 03.03.2020, S. 440-450.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Optical spectroscopic and electrochemical characterization of oxide films on a ferritic stainless steel
AU - Fan, Changfeng
AU - Shi, Jianmin
AU - Sharafeev, Azat
AU - Lemmens, Peter
AU - Dilger, Klaus
N1 - Funding information: J. S. acknowledges financial support from the German Research Foundation (DFG, SH802/2?1). C. F. thanks the China Scholarship Council for a Ph.D. Fellowship (No. 201506450019). P. L. thanks the support of the German Research Foundation (DFG?RTG 1952/1, DFG?EXC 2123, DFG?LE967/16?1) and the NTH?School “Contacts in Nanosystems.” J. S. acknowledges financial support from the German Research Foundation (DFG, SH802/2-1). C. F. thanks the China Scholarship Council for a Ph.D. Fellowship (No. 201506450019). P. L. thanks the?support of the German Research Foundation (DFG-RTG 1952/1, DFG-EXC 2123, DFG-LE967/16-1) and the NTH-School ?Contacts in Nanosystems.?
PY - 2020/3/3
Y1 - 2020/3/3
N2 - Colored oxide films that form on ferritic stainless steel in a high-temperature, oxidizing environment and correspond to different chemical compositions can cause a deterioration of pitting resistance and corrosion performance. Herein, optical spectroscopic and electrochemical techniques have been used to reveal the relationship between color, chemical composition, and corrosion resistance of oxide films formed in the temperature range from 400°C to 800°C for 30 min and at 800°C for 10, 20, 30, and 60 min. The substrate with a thin and dense passivation film leads to a low pitting potential but high corrosion resistance. Oxide films of yellowish or brownish color formed below 600°C are mainly iron oxides, which correspond to low corrosion resistance. No passivation characteristics can be observed for polarization curves of oxide films formed at 500°C and 600°C. The color of oxide films varies from blue to dark gray with the increase of oxidation time at 800°C. Corrosion resistance changes with different proportions of Fe3O4, Cr2O3, and FeCr2O4. The gray oxide films formed at 800°C for 30 min exhibit the lowest pitting susceptibility and the highest corrosion resistance.
AB - Colored oxide films that form on ferritic stainless steel in a high-temperature, oxidizing environment and correspond to different chemical compositions can cause a deterioration of pitting resistance and corrosion performance. Herein, optical spectroscopic and electrochemical techniques have been used to reveal the relationship between color, chemical composition, and corrosion resistance of oxide films formed in the temperature range from 400°C to 800°C for 30 min and at 800°C for 10, 20, 30, and 60 min. The substrate with a thin and dense passivation film leads to a low pitting potential but high corrosion resistance. Oxide films of yellowish or brownish color formed below 600°C are mainly iron oxides, which correspond to low corrosion resistance. No passivation characteristics can be observed for polarization curves of oxide films formed at 500°C and 600°C. The color of oxide films varies from blue to dark gray with the increase of oxidation time at 800°C. Corrosion resistance changes with different proportions of Fe3O4, Cr2O3, and FeCr2O4. The gray oxide films formed at 800°C for 30 min exhibit the lowest pitting susceptibility and the highest corrosion resistance.
KW - corrosion resistance
KW - electrochemical measurements
KW - ferritic stainless steel
KW - optical spectroscopy
KW - oxide films
UR - http://www.scopus.com/inward/record.url?scp=85078610796&partnerID=8YFLogxK
U2 - 10.1002/maco.201911425
DO - 10.1002/maco.201911425
M3 - Article
AN - SCOPUS:85078610796
VL - 71
SP - 440
EP - 450
JO - Materials and corrosion
JF - Materials and corrosion
SN - 0947-5117
IS - 3
ER -