Corrosion monitoring system based on measurement and analysis of electrochemical noise
- Univ. of Ljubljana (Slovenia). Jozef Stefan Inst.
- Univ. of Maribor (Slovenia)
A corrosion monitoring system using electrochemical noise measurements and their numerical analysis was developed. Electrochemical noise was measured in a freely corroding system containing three identical metal electrodes. A voltage signal generated by the first pair of electrodes and a current signal generated by the second pair were measured, and the data were fed into a computer. A mathematical model that included signal processing and pattern recognition was implemented using computer software. Analysis of the electrochemical noise enabled determination of the corrosion rate and the corrosion type. The reliability of the corrosion monitoring system was tested against various reference methods (visual inspection, scanning electron microscopy, current-vs-potential curves, and electrical resistance). Tests were performed on steel and aluminum in aqueous solutions of various pH and conductivity values.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 46070
- Journal Information:
- Corrosion, Journal Name: Corrosion Journal Issue: 4 Vol. 51; ISSN 0010-9312; ISSN CORRAK
- Country of Publication:
- United States
- Language:
- English
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