Corrosion behavior and protective ability of Zn and Zn-Co electrodeposits with embedded polymeric nanoparticles

被引：40
作者：
Boshkov, N. [1 ,2 ]
Tsvetkova, N. [2 ]
Petrov, P. [3 ]
Koleva, D. [4 ]
Petrov, K. [5 ]
Avdeev, G. [5 ]
Tsvetanov, Ch. [3 ]
Raichevsky, G. [2 ]
Raicheff, R. [6 ]
机构：
[1] Bulgarian Acad Sci, Inst Phys Chem Akad G Bonchev, BU-1113 Sofia, Bulgaria
[2] Bulgarian Acad Sci, Inst Phys Chem, BU-1113 Sofia, Bulgaria
[3] Bulgarian Acad Sci, Inst Polymers, BU-1113 Sofia, Bulgaria
[4] Delft Univ Technol, Fac Civil Engn & Geosci, NL-2600 AA Delft, Netherlands
[5] Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, Bulgaria
[6] Bulgarian Acad Sci, Inst Electrochem & Energy Syst, BU-1113 Sofia, Bulgaria
来源：
APPLIED SURFACE SCIENCE | 2008年 / 254卷 / 17期
关键词：
corrosion; stabilized polymeric micelles; X-ray diffraction; zinc; zinc alloy;
D O I：
10.1016/j.apsusc.2008.03.013
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The anodic behavior, corrosion resistance and protective ability of Zn and alloyed Zn-Co (similar to 3 wt.%) nanocomposite coatings were investigated in a model corrosion medium of 5% NaCl solution. The metallic matrix of the layers incorporates core-shell nano-sized stabilized polymeric micelles (SPMs) obtained from poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) block co-polymers. The protective properties of the composite coatings were evaluated using potentiodynamic polarization technique, polarization resistance measurements and powder X-ray diffraction. The sizes and distribution of the stabilized polymeric micelles in the starting electrolytes used as well as in the metal matrices of the layers were investigated using scanning and transmission electron microscopy. The results obtained are compared to those of electrodeposited Zn and Zn-Co (similar to 3 wt.%) alloy coatings at identical conditions and demonstrate the enhanced protective characteristics of the Zn nanocomposites during the investigating period. The influence of the SPMs on the corrosion resistance of the nanocomposite layers is commented and discussed. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：5618 / 5625
页数：8
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