TY - JOUR
T1 - The use of cyclic polarization method for corrosion resistance evaluation of austenitic stainless steel 304L and 316L in aqueous sodium chloride solution
AU - Rustandi, Andi
AU - Nuradityatama,
AU - Rendi, M. Faisal
AU - Setiawan, Suganta
N1 - Publisher Copyright:
© 2017 Int. J. Mech. Eng. Rob. Res.
PY - 2017/11/1
Y1 - 2017/11/1
N2 - Corrosion behavior of austenitic stainless steels 304L and 316L types in various concentrations of aqueous sodium chloride solutions were investigated related to its pitting corrosion resistance. Experimental testing was carried out by using cyclic polarization method at room temperature (27°C) to evaluate the corrosion mechanism by considering breakdown potential (Eb) and protection potential (Ep). Aqueous sodium chloride solutions were prepared with various concentration i.e. 1%, 2%, 3.5%, 4% and 5% w/v. The testing results were represented by cyclic potentiodynamic polarization curves for both alloys which showed potentials that indicated the onset of potentials Eb and Ep respectively. The results were influenced by sodium chloride concentrations and the chemical composition of alloys. Rank of the values of Eb and Ep of 304L and 316L at various sodium chloride concentrations from the highest to the lowest were 1%, 2%, 5%, 4%, 3,5% w/v NaCl consecutively. It was observed that the lowest corrosion resistance of both alloys was at 3,5% w/v NaCl which was similar to typical seawater solution with maximum dissolved oxygen solubility. It was shown that 316L has more positive potentials for both Eb and Ep as well as its difference values compared to SS 304L at all concentrations of aqueous sodium chloride solution.
AB - Corrosion behavior of austenitic stainless steels 304L and 316L types in various concentrations of aqueous sodium chloride solutions were investigated related to its pitting corrosion resistance. Experimental testing was carried out by using cyclic polarization method at room temperature (27°C) to evaluate the corrosion mechanism by considering breakdown potential (Eb) and protection potential (Ep). Aqueous sodium chloride solutions were prepared with various concentration i.e. 1%, 2%, 3.5%, 4% and 5% w/v. The testing results were represented by cyclic potentiodynamic polarization curves for both alloys which showed potentials that indicated the onset of potentials Eb and Ep respectively. The results were influenced by sodium chloride concentrations and the chemical composition of alloys. Rank of the values of Eb and Ep of 304L and 316L at various sodium chloride concentrations from the highest to the lowest were 1%, 2%, 5%, 4%, 3,5% w/v NaCl consecutively. It was observed that the lowest corrosion resistance of both alloys was at 3,5% w/v NaCl which was similar to typical seawater solution with maximum dissolved oxygen solubility. It was shown that 316L has more positive potentials for both Eb and Ep as well as its difference values compared to SS 304L at all concentrations of aqueous sodium chloride solution.
KW - Austenitic stainless steel
KW - Corrosion behavior
KW - Cyclic polarization
KW - NaCl aqueous solution
KW - Pitting corrosion resistance
UR - http://www.scopus.com/inward/record.url?scp=85034069154&partnerID=8YFLogxK
U2 - 10.18178/ijmerr.6.6.512-518
DO - 10.18178/ijmerr.6.6.512-518
M3 - Article
AN - SCOPUS:85034069154
VL - 6
SP - 512
EP - 518
JO - International Journal of Mechanical Engineering and Robotics Research
JF - International Journal of Mechanical Engineering and Robotics Research
SN - 2278-0149
IS - 6
ER -