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Micro‐electrochemical characterization of galvanic corrosion of TA2/316L composite plate
Author(s) -
Cheng X.,
Li X.,
Dong C.,
Xiao K.
Publication year - 2011
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.201005644
Subject(s) - galvanic cell , materials science , corrosion , galvanic corrosion , dielectric spectroscopy , metallurgy , electrochemistry , alloy , titanium , pitting corrosion , galvanic anode , electrode , composite material , chemistry , cathodic protection
Galvanic corrosion behavior of TA2/316L composite plate was investigated in the solution of 3.5 wt% NaCl by galvanic potential monitoring, scanning localized electrochemical impedance spectroscopy (LEIS) and scanning vibrating micro‐electrode (SVME) techniques. The results demonstrated that the pitting corrosion resistance of 316L for the galvanic combination sample is lower, and the coupled current density is higher than for the single 316L sample. It indicates that the galvanic action works on the corrosion behavior of the TA2 titanium alloy/316L stainless steel galvanic combination in sodium chloride solution. The galvanic effect width was determined as 1500 µm.