TY - GEN
T1 - Corrosion resistance of oxide scales formed in high-temperature oxidation of Al-bearing ferritic stainless steel
AU - Sugawara, Yu
AU - Ogiwara, Misako
AU - Muto, Izumi
AU - Inakuma, Toru
AU - Sakamoto, Hiroaki
AU - Hara, Nobuyoshi
PY - 2013
Y1 - 2013
N2 - Electrochemical polarization measurements were performed on Albearing stainless steels covered with oxide scales formed at 973, 1173, and 1373 K, and the pinhole defect density and the reductive dissolution behaviors of the scales were investigated. The increase of oxidation temperature and the content of Al led to the growth of a thick Al-rich oxide scale. The Al-rich oxide scales had less pinhole defects, resulting in high corrosion resistance in acidic condition. In contrast, Fe-rich oxide layers formed at lower oxidation temperatures dissolved cathodically. The Al addition was effective to decrease the pinhole defects and to enhance the corrosion resistance of the oxide scales due to the formation of the Al-rich oxide scale.
AB - Electrochemical polarization measurements were performed on Albearing stainless steels covered with oxide scales formed at 973, 1173, and 1373 K, and the pinhole defect density and the reductive dissolution behaviors of the scales were investigated. The increase of oxidation temperature and the content of Al led to the growth of a thick Al-rich oxide scale. The Al-rich oxide scales had less pinhole defects, resulting in high corrosion resistance in acidic condition. In contrast, Fe-rich oxide layers formed at lower oxidation temperatures dissolved cathodically. The Al addition was effective to decrease the pinhole defects and to enhance the corrosion resistance of the oxide scales due to the formation of the Al-rich oxide scale.
UR - http://www.scopus.com/inward/record.url?scp=84904869957&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84904869957&partnerID=8YFLogxK
U2 - 10.1149/05841.0065ecst
DO - 10.1149/05841.0065ecst
M3 - Conference contribution
AN - SCOPUS:84904869957
T3 - ECS Transactions
SP - 65
EP - 74
BT - ECS Transactions
PB - Electrochemical Society Inc.
ER -