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Corrosion resistance of self‐growing TiC coating on SIMP steel in LBE at 600 °C
Author(s) -
Shi Q.Q.,
Yan W.,
Sha W.,
Wang W.,
Shan Y.Y.,
Yang K.
Publication year - 2016
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.201508727
Subject(s) - coating , materials science , decarburization , corrosion , eutectic system , metallurgy , layer (electronics) , deposition (geology) , porosity , composite material , alloy , paleontology , sediment , biology
SIMP steel was newly developed as a candidate structural material for the accelerator driven subcritical system. The serious decarburization of SIMP steel because of the high Si content was used to successfully form a self‐growing TiC coating on the surface, after the Ti deposition as a first step. This TiC layer can effectively protect the surface from the static liquid lead‐bismuth eutectic (LBE) corrosion at 600 °C up to 2000 h in the low oxygen LBE. However, in the oxygen saturated LBE, the TiC coating is oxidized into porous TiO 2 after only 500 h and fails to protect. Therefore, the self‐growing TiC coating is desired only when the oxygen content of LBE is strictly controlled on a low level.