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Influences of the three‐phase boundary on the electrochemical corrosion characteristics of carbon steel under droplets
Author(s) -
Wang Y. H.,
Liu Y. Y.,
Wang W.,
Zhong L.,
Wang J.
Publication year - 2013
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201106423
Subject(s) - corrosion , materials science , electrochemistry , anode , carbon steel , metallurgy , carbon fibers , phase (matter) , current density , electrode , composite material , chemistry , physics , organic chemistry , quantum mechanics , composite number
The potential/current distributions of carbon steel were investigated under 0.001 M sodium chloride droplets of various sizes using a wire beam electrode. During the corrosion process, carbon steel exhibited heterogeneous electrochemical characteristics with the major anodes located near the edge of the droplets. The three‐phase boundary (TPB) plays a vital role in determining the electrochemical distribution and the corrosion degree of carbon steel. With the increase of droplet size, the average anodic current density and the corrosion degree decreased, which is believed to be due to the decrease of the TPB length per unit area.