Alternating Current (AC) Impedance Testing of Coated Traycans

Abstract

This is the final report on Cortext Columbus Technologies' program entitled 'AC Impedance Testing of Coated Trycans', performed under Contract DAAK60-90-1301. The overall objective of the program was to evaluate the relative resistance of several candidate coatings prior to retorting to a solution containing NaCl and citric acid (simulating saline, acidic food product) at ambient temperature. An additional objective of the program was to perform an initial assessment of the applicability of the AC impedance technique as a quality assurance technique for traycan coatings. The performance of the coatings was evaluated by means of an Electrochemical Impedance Spectroscopy (EIS) technique, also referred to as AC impedance. The EIS technique was found to be a sensitive technique for measuring coating degradation on the traycans. Of the coatings analyzed, the VMC coating, in general was found to be the best performer, followed closely by DMS and VMS. The control coating was found to be the poorest coating, of the coatings analyzed.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1993
Accession Number
ADA261256

Entities

People

  • John Beavers
  • Kurt Lawson

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Cyber
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Alternating Current
  • Aluminum
  • Cells
  • Citric Acid
  • Coatings
  • Corrosion
  • Corrosion Resistance
  • Degradation
  • Electric Vehicles
  • Engineering
  • Frequency
  • Frequency Response
  • Impedance
  • Information Security
  • Resistance
  • Security
  • Test And Evaluation

Readers

  • Analytical Chemistry
  • Aviation Science / Aeronautics.
  • Electrochemical Surface Science