Abstract
The present study investigates the influence of temperature on corrosion of AM SS316L in CO2 saturated brine solution. As the temperature increased from 25 °C to 70 °C, the corrosion rate rose nearly fivefold, from 1.78 to 10.06 mpy. The pitting potential decreased from 818 mV to 450 mV, with the gap between |Epit – Erep| widening from 669 mV to 853 mV. EIS results corroborated these results, revealing a decline in Rct from 4755 to 858 Ωcm2 and an increase in Yct from 38 to 119 snΩ-1cm−2. Subsequent surface morphology analysis post-corrosion testing revealed increased corrosion severity with rising temperature. In summary, elevated temperature led to increased corrosion rates, more susceptibility to pitting corrosion, and hindered repassivation.
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