The electrochemical behaviour of 254SMO stainless steel in HCl solutions has been studied and compared with that observed for other alloys using open circuit potential measurements, potentiodynamic polarisation curves, and SEM analysis techniques. 254SMO does not display pitting corrosion at room temperature in HCl solutions having concentrations ≤5·0M. Its performance is comparable with that of Hastelloy C276 in HCl media in solutions of strength ≤1·0M. The critical pitting temperature for 254SMO exceeds 76°C in 3M HCl solutions.
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References
1.
NewmanR. C. and SHAHRABIT.: Corros. Sci., 1987, 27, (8), 827.
2.
KoltzJ., WUJ. B. C., MANNINGP. E., and ASPHAHANIA. I.: Corros. Rev., 1986, 6, (4), 279.
3.
DE MICHELIL., AndradeA. H. P., BARBOSAC. A., and AGOSTINHOS. M. L.: Br. Corros. J., 1999, 34, (1), 67–70.
4.
De MichellL.ANDRADEA. H. P., BARBOSAC. A., TESSLERM., and AGOSTINHOS. M. L.: ‘Electrochemical behaviour of TINS S31254 Brazilian made steel in chloride media’, Master's thesis, Instituto de Quimica da USP, sao Paulo, Brazil, 1994.
5.
QvarfortR.: Corros. Sci., 1989, 29, (8), 987.
6.
De MichellL.BARBOSAC. A., and AGOSTINHOS. M. L.: Proc. 18th Annual Meeting of Brazilian Society of Chemistry, Caxambu, MG, Brazil, 1995.
7.
DE MICHELIL. and AgostinhoS. M. L.: Proc. 34th Brazilian Congress on ‘Chemistry’, Porto Alegre, RS, Brazil, October1994.
8.
GarnerA.: Pulp Paper Can., 1981, 82, (12), 109.
9.
GarnerA.: Proc. 2th Annual Conference of Metallurgists: ‘High performance austenitic stainless steels in the pulp and paper industry’, August1986, CIM.
