Editors' Choice-Respirometric in Situ Methods for Real-Time Monitoring of Corrosion Rates: Part I. Atmospheric Corrosion

Strebl M, Bruns M, Virtanen S (2020)


Publication Type: Journal article

Publication year: 2020

Journal

Book Volume: 167

Journal Issue: 2

DOI: 10.1149/1945-7111/ab6c61

Abstract

A novel respirometric approach to monitor atmospheric corrosion kinetics is presented. Simultaneous real-time monitoring of the H-2 evolution reaction (HER) and the O-2 reduction reaction (ORR) is possible with a combination of optical O2 sensor measurements with gravimetric volume sensitive techniques or pressure sensor based techniques in closed chambers. The respirometric method is a universal, non-destructive tool applicable to any metal or alloy. It shows a high sensitivity for low corrosion rates and has a high time-resolution. Different examples of relevant engineering metals and alloys will be provided. Mass loss validation measurements carried out at the end of exposure show a good correlation with the total recorded cathodic charge. For metals with different oxidation states the average valency in the corrosion products can be calculated from the cathodic charge together with mass loss. The versatility of the novel monitoring technique is further demonstrated by studying the influence of wet-dry cycling, temperature steps or changes in the gas composition in situ. The rate of HER, ORR and total corrosion rate during these changing exposure conditions can be tracked directly on the same sample. Overall the new method contributes to bridging the gap between lab tests, accelerated testing and field exposure. (C) 2020 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited.

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APA:

Strebl, M., Bruns, M., & Virtanen, S. (2020). Editors' Choice-Respirometric in Situ Methods for Real-Time Monitoring of Corrosion Rates: Part I. Atmospheric Corrosion. Journal of The Electrochemical Society, 167(2). https://dx.doi.org/10.1149/1945-7111/ab6c61

MLA:

Strebl, Michael, Mark Bruns, and Sannakaisa Virtanen. "Editors' Choice-Respirometric in Situ Methods for Real-Time Monitoring of Corrosion Rates: Part I. Atmospheric Corrosion." Journal of The Electrochemical Society 167.2 (2020).

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