Open AccessEffect of heat treatment on the corrosion resistance of S43035 ferritic stainless steel in dilute sulphate-chloride environment
Author(s) -
Roland Tolulope Loto
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/872/1/012054
Subject(s) - corrosion , chloride , materials science , metallurgy , polarization (electrochemistry) , open circuit voltage , chemistry , physics , quantum mechanics , voltage
The corrosion resistance of heat treated S43035 ferritic stainless (500°C and 1000°C) was studied in 3.5M H 2 SO 4 solution at 0% to 6% NaCl concentration and compared with the results obtained for the non-treated steel by potentiodynamic polarization and open circuit potential measurement. Polarization data revealed that heat treatment improved the general corrosion resistance of the steel by percentage margins ranging from 10.36% to 83.44% depending on chloride concentration. Heat treated (500°C) S43035 steel displayed the lowest corrosion rate value followed by the heat treated steel at 1000°C. Open circuit potential measurement plot indicates that heat treatment increases the vulnerability of S43035 steel to corrosion.