Corrosion protection mechanisms of carbon nanotube and zinc-rich epoxy primers on carbon steel in simulated concrete pore solutions in the presence of chloride ions
Corrosion protection mechanisms of carbon nanotube and zinc-rich epoxy primers on carbon steel in simulated concrete pore solutions in the presence of chloride ions
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DOI：
10.1016/j.corsci.2016.03.023
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发表时间：
2016-08-01
影响因子：
8.3
通讯作者：
Castaneda, H.
中科院分区：
文献类型：
--
作者：
Cubides, Y.;Castaneda, H.
本研究研究了碳纳米管和富锌环氧底漆（cnt - zrp）在模拟混凝土孔（SCP）溶液中氯离子存在下的电化学特性。通过添加不同锌含量对cnts - zrp的机理性能进行了表征。电化学结果表明，锌含量为60 wt%的涂层以屏障保护为主，而锌含量为70 wt%的涂层以混合腐蚀保护为主，锌含量较高（80 wt%和90 wt%Zn）的涂层以阴极保护为主。利用电化学和高分辨率技术对这些屏障和阴极保护控制机制进行了定量表征。(C) 2016 Elsevier Ltd.版权所有。
This study investigates the electrochemical characterization of carbon nanotube and zinc-rich epoxy primers (CNT-ZRPs) on carbon steel in simulated concrete pore (SCP) solutions in the presence of chloride ions. The mechanistic performance of CNT-ZRPs was characterized by adding different zinc content. The electrochemical results indicated a dominant barrier protection effect for the coating with 60 wt%Zn while there was a mixed corrosion protection mechanism for the coating with 70 wt% Zn and a dominant cathodic protection mechanism for coatings with higher zinc content (80 wt% and 90 wt% Zn). These barrier and cathodic protection control mechanisms were characterized quantitatively by electrochemical and high-resolution techniques. (C) 2016 Elsevier Ltd. All rights reserved.