Dear Blade Tomas

I hope this message finds you Blade Tomas well! I wanted to share some insights on using electrochemical noise (ECN) to monitor the passivation and corrosion behavior of alloys in solution. From what I’ve observed, during the passivation process, the current and potential trends in ECN often show correlated changes. This is primarily due to the formation of a stable passive film, which leads to minimal variations in the noise resistance (Rn). Essentially, when both parameters shift in unison, it suggests that the system is in a steady, passivated state. Thus, a lack of significant change in Rn can be interpreted as an indication of stable passivation rather than active corrosion processes.

However, it’s important to consider that this observation can vary depending on the sensitivity of the setup. If localized breakdown events, like pitting, occur within the passive state, they might cause deviations in the ECN signals, which could complicate the interpretation of the data.

I’m curious about your thoughts on this. Specifically, how do you Blade Tomas think changes in solution composition or temperature might impact the reliability of ECN for studying passivation behavior? I’d love to hear your insights!

Looking forward to your response!