Open AccessPitting corrosion behavior of metal materials and research methods
Author(s) -
Fan Wang,
Qiaoli Shan,
Fan Zhang,
Lu Feng,
Jinling Li,
Tao Yu,
Chengtun Qu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/651/3/032039
Subject(s) - pitting corrosion , electrochemical noise , materials science , corrosion , metallurgy , polarization (electrochemistry) , metal , electrochemistry , nucleation , electrode , chemistry , organic chemistry
Pitting corrosion occurs easily in metal pipelines containing corrosive media, which leads to premature failure of pipelines, oil, gas and water leakage, and increases the risk of environmental pollution. In this paper, the conditions of metal pitting, several nucleation mechanisms, growth and repassivation processes of metal metastable pitting are summarized. Corrosion electrochemical measurement technology can reflect the behavior characteristics of metal materials in the process of corrosion. The application of pitting of metal materials in the medium is introduced by using such electrochemical measurement techniques as polarization curve, electrochemical impedance spectrum, electrochemical noise and scanning electrochemical microscope.