Potentiodynamic Scans: Material Preparation, Data Acquisition and Analysis

This standard provides a procedure that ensures, to the best extent possible, the uniform collection of electrochemical data. This standard aims to reduce variability between measurements and allow for comparisons between laboratories and samples. This standard also includes information and discussion of the reason for stringency in the procedures and lessons learned to help laboratories troubleshoot potential issues with data collection.

The collection of potentiodynamic data is a highly sensitive process that must have strict bounds such that comparisons between samples can be made. Bounds in previous standards were too wide, causing large variations in the resulting data. Large deviations between data of the same material type, treatment, and electrolyte chemistry hinders the ability of researchers to compare data as two materials can have widely varying results. This document serves to standardize the material preparation, data collection, and data analysis procedures for potentiodynamic data, ensuring future comparisons of polarization curve data is achievable.