A comparative study on corrosion inhibitive effect of nitrate and phosphate intercalated Zn-Al-layered double hydroxides (LDHs) nanocontainers incorporated into a hybrid silane layer and their effect on cathodic delamination of epoxy topcoat

被引：187
作者：
Alibakhshi, E. [1 ,2 ]
Ghasemi, E. [1 ]
Mandavian, M. [2 ]
Ramezanzadeh, B. [2 ]
机构：
[1] Inst Color Sci & Technol, Inorgan Pigment & Glazes Dept, Tehran, Iran
[2] Inst Color Sci & Technol, Surface Coating & Corros Dept, Tehran, Iran
来源：
CORROSION SCIENCE | 2017年 / 115卷
关键词：
Mild steel; EIS; XPS; Polymer coatings; Neutral inhibition; SELF-HEALING ABILITY; AZ31 MG ALLOY; ZINC PHOSPHATE; ELECTROCHEMICAL-BEHAVIOR; ANTICORROSION COATINGS; PROTECTIVE-COATINGS; HYDROTALCITE FILM; SMART COATINGS; THIN-FILMS; PIGMENT;
D O I：
10.1016/j.corsci.2016.12.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study aims at synthesis and characterization of Zn-Al-PO43- and Zn-Al-NO3- layered double hydroxides (LDHs) through employing FE-SEM, EDS and X-ray photoelectron spectroscopy (XPS) analyses. The smart release ability of the inhibitive spices from LDHs were checked by EIS, polarization and surface analysis tests in 3.5 wt.% NaCl solution. A two-layer coating system consisting of silane primer filled with LDHs and epoxy-polyamide top coat were applied on steel and then the active inhibition capability of the coatings was investigated. The addition of Zn-Al-PO43- LDH to the silane coating provides efficient inhibition behavior by releasing PO43- anions through ion exchange process. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：159 / 174
页数：16
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