Protection of Metals and Physical Chemistry of Surfaces· 2018Q3· Review
Interpretation of Cyclic Potentiodynamic Polarization Test Results for Study of Corrosion Behavior of Metals: A Review
- 354citations
- Q3SCImago
- 2018year
Short summary
This review details the cyclic potentiodynamic polarization (CPP) technique for assessing metal susceptibility to localized corrosion, offering guidance on correct test execution and result interpretation.
AI-generated from the title and abstract; the full text is not read.
Key points
- Cyclic potentiodynamic polarization (CPP) is used to evaluate metal susceptibility to localized corrosion (pitting, crevice).
- The review guides correct CPP test execution and proper interpretation of polarization scans.
- Critical parameters affecting CPP curves and results include solution resistivity, scan rate, aggressive ions, and metallurgical variables.
- Examples of CPP curves for common metals and alloys in prevalent environments are provided.
AI-generated from the title and abstract; the full text is not read.
Abstract
The cyclic potentiodynamic polarization technique is a method for evaluating the susceptibility of a metal to localized corrosion such as pitting and crevice corrosion. This paper provides the information to conduct the cyclic polarization test correctly and to help performing the interpretation of the polarization scan properly. The effect of critical parameters including solution resistivity, scan rate, point of scan reversal, aggressive ions, corrosion inhibitors, metastable pits, metallurgical variables, temperature, dissolution gases, pH, immersion duration and surface roughness on the cyclic polarization curve and results interpretation are discussed. Then a number of cyclic potentiodynamic polarization curves for common metals and alloys in prevalent environments are given.
The authors' abstract, as published at the source. Protection of Metals and Physical Chemistry of Surfaces, 2018 · DOI ↗
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Field: Metals and Alloys
Metals and AlloysMaterials Science