Corrosion monitoring system based on measurements and analysis of electrochemical noise

Book · Sat Dec 31 04:00:00 EST 1994

OSTI ID:80087

Legat, A ^[1]; Dolecek, V ^[2]

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1. Univ. of Ljubljana (Slovenia). J. Stefan Inst.
2. Univ. of Maribor (Slovenia). Technical Faculty

A corrosion monitoring system using electrochemical noise measurements and their numerical analysis is described. 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 fed into a computer. A mathematical model including signal processing and pattern recognition was developed and implemented in 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 with various reference methods (visual inspection, SEM analysis, I vs E curves, electrical resistance). Tests were performed on steel and aluminium in aqueous solutions of various pH and conductivity values.

• OSTI ID: 80087
• Report Number(s): CONF-940222--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
ACOUSTIC EMISSION TESTING
ALUMINIUM
COMPUTER CALCULATIONS
COOLING SYSTEMS
CORROSION PRODUCTS
DATA ACQUISITION
DATA ANALYSIS
ELECTRIC CONDUCTIVITY
ELECTROCHEMICAL CORROSION
EXPERIMENTAL DATA
MATHEMATICAL MODELS
MONITORING
ON-LINE MEASUREMENT SYSTEMS
STAINLESS STEELS
THERMAL POWER PLANTS