An electrochemical monitor for the detection of coating degradation in atmosphere

• Published in: Journal of the Electrochemical Society Vol. 136; no. 9; pp. 2761 - 2762
• Main Authors: COMEAU SIMPSON, T, MORAN, P. J, MOSHIER, W. C, DAVIS, G. D, SHAW, B. A, ARAH, C. O, ZANKEL, K. L
• Format: Journal Article
• Language: English
• Published: Pennington, NJ Electrochemical Society 01.09.1989
• Subjects: 30 DIRECT ENERGY CONVERSION; 300505 - Fuel Cells- Electrochemistry, Mass Transfer & Thermodynamics; 360105 - Metals & Alloys- Corrosion & Erosion; 656003 - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-); ACIDIFICATION; ALLOYS; Applied sciences; BEAMS; CHEMICAL REACTIONS; CHEMISTRY; COATINGS; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CORROSION; Corrosion environments; CORROSIVE EFFECTS; Cross-disciplinary physics: materials science; rheology; DEPOSITION; DISPERSIONS; ELECTROCHEMISTRY; ELECTRODEPOSITION; ELECTRODES; ELECTROLYSIS; ELECTRON BEAMS; ELEMENTS; ENVIRONMENT; ENVIRONMENTAL IMPACTS; EVAPORATION; Exact sciences and technology; GOLD; IRON ALLOYS; IRON BASE ALLOYS; LEPTON BEAMS; LYSIS; MATERIALS SCIENCE; METALS; Metals, semimetals and alloys; Metals. Metallurgy; MIXTURES; PARTICLE BEAMS; PHASE TRANSFORMATIONS; Physics; POLLUTANTS; PROTECTIVE COATINGS; SIMULATION; SOLUTIONS; Specific materials; SPECTROSCOPY; SPUTTERING; STEELS; SURFACE COATING; TRANSITION ELEMENTS; Examination method; Painted steel; Investigation method; Electrochemical method; Paint; Non metal coatings; Experimental study; Impedance; Non metal coating; Atmospheric corrosion
• ISSN: 0013-4651; 1945-7111
• DOI: 10.1149/1.2097589

Electrochemical impedance spectroscopy (EIS) is ideally suited for detection and monitoring of atmospheric corrosion of painted metals based on its sensitivity, essentially non-destructive nature, and its sensitivity, essentially non-destructive nature, and its applicability for continuous monitoring. EIS has been used for several applications in recent years to assess coating degradation in immersion environments. The authors report an atmospheric electrochemical monitor (ATMEIS) capable of detection of paint degradation in the atmosphere via EIS. The ATMEIS consists of a painted steel coupon (total coating thickness, 100-150 microns) upon which a sputter coated electrode (covering less than 10% of the front surface of the sample coupon) has been deposited to serve as a reference/counter electrode combination. The monitor can be used, therefore, in the absence of a remote reference or counter electrode. This monitor can be used to generate EIS data in air (with the aqueous acid electrolyte removed).