Corrosion Behavior of High-Mn Austenitic Fe-Mn-Al-Cr-C Steels in NaCl and NaOH Solutions.
Corrosion Behavior of High-Mn Austenitic Fe-Mn-Al-Cr-C Steels in NaCl and NaOH Solutions.
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DOI:
10.3390/ma14020425
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发表时间:
2021-01-16
期刊:
影响因子:
--
通讯作者:
Bastidas DM
中科院分区:
文献类型:
--
作者:
Bosch J;Martin U;Aperador W;Bastidas JM;Ress J;Bastidas DM
The corrosion behavior of austenitic Fe–Mn–Al–Cr–C twinning-induced plasticity (TWIP) and microband-induced plasticity (MBIP) steels with different alloying elements ranging from 22.6–30 wt.% Mn, 5.2–8.5 wt.% Al, 3.1–5.1 wt.% Cr, to 0.68–1.0 wt.% C was studied in 3.5 wt.% NaCl (pH 7) and 10 wt.% NaOH (pH 14) solutions. The results obtained using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques, alongside optical microscopy analysis, revealed pitting as the dominant corrosion mechanism in high-Mn TWIP steels. An X-ray diffraction analysis of the surface revealed that the main corrosion products were hematite (Fe2O3), braunite (Mn2O3), and hausmannite (Mn3O4), and binary oxide spinels were also identified, such as galaxite (MnAl2O4) and jacobsite (MnFe2O4). This is due to the higher dissolution rate of Fe and Mn, which present a more active redox potential. In addition, a protective Al2O3 passive film was also revealed, showing enhanced corrosion protection. The highest corrosion susceptibility in both electrolytes was exhibited by the MBIP steel (30 wt.% Mn). Pitting corrosion was observed in both chloride and alkaline solutions.
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影响因子:
2.2
作者:
Bastidas, David M.;Medina, Sebastian F.;Bastidas, Jose M.
通讯作者:
Bastidas, Jose M.
影响因子:
2.9
作者:
Allam, Tarek;Guo, Xiaofei;Bleck, Wolfgang
通讯作者:
Bleck, Wolfgang
DOI:
10.1016/j.msea.2004.01.059
发表时间:
2004-12-15
影响因子:
6.4
作者:
Allain, S;Chateau, JP;Guelton, N
通讯作者:
Guelton, N
影响因子:
1.6
作者:
Bastidas, D. M.
通讯作者:
Bastidas, D. M.
DOI:
10.1016/0956-716x(92)90659-3
发表时间:
1992-05-01
期刊:
SCRIPTA METALLURGICA ET MATERIALIA
影响因子:
--
作者:
CHOU, JS;CHAO, CG
通讯作者:
CHAO, CG