Journal
CORROSION SCIENCE
Volume 69, Issue -, Pages 130-138Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2012.11.033
Keywords
Stainless steel; Electrochemical calculation; Polarization; Potentiostatic; SEM; Acid corrosion
Funding
- Spanish Science and Innovation Ministry [BIA-2007-66491-C02-02]
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The anodic dissolution of austenitic stainless steel bars in an acid medium (0.5 M HCl + 2 M H(2)SO4) under different polarizations is studied. The material comes from bars formed by hot working (HW) and by cold working (CW). UNS S30403 and S31603 grades are considered. The determining effect of alloying elements and working method are proved. The morphology of the attack at different anodic potentials is analyzed. The important influence of the amount and distribution of strain-induced martensite on corrosion is demonstrated. The effect of the martensite on the anodic polarization curves is quantified using specifically designed software. (C) 2012 Elsevier Ltd. All rights reserved.
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