Electrochemical Impedance of Organic Coated Steel; Final Report. Correlation of Impedance Parameters with Long-Term Coating Performance

Abstract

This final report presents a general overview of the use of Electrochemical Impedance Spectroscopy (EIS) as it applies to the evaluation of organic coated steels exposed to aerated, artificial (ASTM) sea water. The testing was performed over roughly a 6-year span with some samples subjected to immersion testing for up to 4 years. Three project reports have been previously issued covering: (a) the initial test efforts, (b) a summary style literature search on the use of EIS and coated metals, and (c) an experimental correlation of the EIS parameters with the first 550 days of sample exposure in ASTM sea water. The data from the latter report have been critically reviewed, supplemented with data from the continued testing of the same sample set and have been reanalyzed using a modified equivalent electrical circuit. (JS)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1990
Accession Number
ADA229012

Entities

People

  • HP Hack
  • John N. Murray

Tags

Communities of Interest

  • Advanced Electronics
  • Cyber
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Capacitance
  • Carbon Steels
  • Chemical Compounds
  • Chemical Synthesis
  • Chemistry
  • Circuits
  • Classification
  • Electrical Circuits
  • Equivalent Circuits
  • Frequency
  • Impedance
  • Materials
  • Materials Engineering
  • Military Research
  • Monitoring
  • Resistance
  • Sea Water

Readers

  • Materials Science and Engineering.
  • Regression Analysis.
  • Systems Analysis and Design