Investigation of Factors Affecting Corrosion Rate Determination by Resistance Polarization

Abstract

This investigation sought to design and test an apparatus for use in operating environments to reliably and accurately indicate, by galvanostatic resistance polarization techniques, the metal surface corrosion rate. Using two high purity iron specimens with different impurity content, tests were conducted in hydrogen saturated and aerated environments of 1N and 0.1N sulfuric acid and 3% sodium chloride/0.5N potassium sulfate. BOTH GRAPHICAL AND COMPUTERIZED LINEAR REGRESSION TECHNIQUES WERE USED TO DETERMINE SPECIFIC RUN AND AVERAGE POLARIZATION RESISTANCE VALUES. Weight-loss tests were conducted simultaneously with resistance polarization tests to provide comparative actual corrosion rate information. Actual corrosion damage was found most dependent upon grain orientation, electrolyte agitation, and the specific impurity content.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1973
Accession Number
AD0770084

Entities

People

  • Robert L. Kuhnle

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Body Weight
  • Cells
  • Coast Guard
  • Computer Programs
  • Computers
  • Data Analysis
  • Engineering
  • Laboratory Tests
  • Maintenance
  • Materials
  • Metals
  • Plastic Explosives
  • Resistance
  • Sodium Compounds
  • Steady State

Fields of Study

  • Materials science

Readers

  • Computational Modeling and Simulation
  • Electrochemical Engineering/ Fuel Cell Technologies
  • Thermal Physics or Thermal Science.