Anticorrosion coatings with self-healing effect based on nanocontainers impregnated with corrosion inhibitor

被引:482
作者
Zheludkevich, Mikhail L. [1 ]
Shchukin, Dmitry G.
Yasakau, Kiryl A.
Moehwald, Helmut
Ferreira, Mario G. S.
机构
[1] Univ Aveiro, CICECO, Dept Ceram & Glass Engn, P-3810193 Aveiro, Portugal
[2] Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany
关键词
D O I
10.1021/cm062066k
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 development of active corrosion protection systems for metallic substrates is an issue of prime importance for many industrial applications. The present work shows a new contribution to the development of a new protective system with self-healing ability composed of hybrid sol-gel films doped with nanocontainers that release entrapped corrosion inhibitor in response to pH changes caused by corrosion process. A silica-zirconia based hybrid film was used in this work as an anticorrosion coating deposited on 2024 aluminum alloy. Silica nanoparticles covered layer-by-layer with polyelectrolyte layers and layers of inhibitor (benzotriazole) were randomly introduced into the hybrid films. The hybrid film with the nanocontainers reveals enhanced long-term corrosion protection in comparison with the undoped hybrid film. The scanning vibrating electrode technique also shows an effective self-healing ability of the defects. This effect is obtained due to regulated release of the corrosion inhibitor triggered by the corrosion processes started in the cavities. The approach described herein can be used in many applications where active corrosion protection of materials is required.
引用
收藏
页码:402 / 411
页数:10
相关论文
共 40 条
[1]   Biocompatibility of layer-by-layer self-assembled nanofilm on silicone rubber for neurons [J].
Ai, H ;
Meng, HD ;
Ichinose, I ;
Jones, SA ;
Mills, DK ;
Lvov, YM ;
Qiao, XX .
JOURNAL OF NEUROSCIENCE METHODS, 2003, 128 (1-2) :1-8
[2]   Light-responsive polyelectrolyte/gold nanoparticle microcapsules [J].
Angelatos, AS ;
Radt, B ;
Caruso, F .
JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (07) :3071-3076
[3]   Polyelectrolyte multilayer capsules as vehicles with tunable permeability [J].
Antipov, AA ;
Sukhorukov, GB .
ADVANCES IN COLLOID AND INTERFACE SCIENCE, 2004, 111 (1-2) :49-61
[4]  
Brooman E., 2002, Metal Finishing, V100, P42
[5]  
Brooman E. W., 2002, MET FINISH, V100, P104, DOI DOI 10.1016/S0026-0576(02)80446-9
[6]  
Brooman E. W., 2002, MET FINISH, V100, P48
[7]   Active corrosion protection and corrosion sensing in chromate-free organic coatings [J].
Buchheit, RG ;
Guan, H ;
Mahajanam, S ;
Wong, F .
PROGRESS IN ORGANIC COATINGS, 2003, 47 (3-4) :174-182
[8]  
Clark SL, 1999, ADV MATER, V11, P1031, DOI 10.1002/(SICI)1521-4095(199908)11:12<1031::AID-ADMA1031>3.0.CO
[9]  
2-Q
[10]   Physicochemical characterization of the layer-by-layer self-assembly of polyphenol oxidase and chitosan on glassy carbon electrode [J].
Coche-Guérente, L ;
Desbrières, J ;
Fatisson, J ;
Labbé, P ;
Rodriguez, MC ;
Rivas, G .
ELECTROCHIMICA ACTA, 2005, 50 (14) :2865-2877