Effect of cerium on structure modifications of a hybrid sol-gel coating, its mechanical properties and anti-corrosion behavior

被引：58
|
作者：
Cambon, Jean-Baptiste [1 ]
Esteban, Julien [1 ]
Ansart, Florence [1 ]
Bonino, Jean-Pierre [1 ]
Turq, Viviane [1 ]
Santagneli, S. H. [2 ]
Santilli, C. V. [2 ]
Pulcinelli, S. H. [2 ]
机构：
[1] Univ Toulouse, Inst Carnot CIRIMAT, UMR CNRS 5085, F-31062 Toulouse 9, France
[2] Univ Estadual Paulista, Dept Quim Fis, Inst Quim, UNESP, BR-14801970 Araraquara, SP, Brazil
来源：
MATERIALS RESEARCH BULLETIN | 2012年 / 47卷 / 11期
关键词：
Hydrides; Sol-gel chemistry; Nuclear magnetic resonance (NMR); Impedance spectroscopy; Electrochemical properties; Mechanical properties; CORROSION PROTECTIVE PROPERTIES; PERFORMANCE; RESISTANCE; AA2024-T3; CHROMATE; METALS; STEEL; FILMS; NMR; EIS;
D O I：
10.1016/j.materresbull.2012.08.034
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An organic-inorganic hybrid coating was developed to improve the corrosion resistance of the aluminum alloy AA 2024-T3. Organic and inorganic coatings derived from glycidoxypropyltrimethoxysilane (GPTMS) and aluminum tri-sec-butoxide Al((OBu)-Bu-s)(3), with different cerium contents, were deposited onto aluminum by dip-coating process. Corrosion resistance and mechanical properties were investigated by electrochemical impedance measurements and nano-indentation respectively. An optimal cerium concentration of 0.01 M was evidenced. To correlate and explain the hybrid coating performances in relation to the cerium content, NMR experiments were performed. It has been shown that when the cerium concentration in the hybrid is higher than 0.01 M there are important modifications in the hybrid structure that account for the mechanical properties and anti-corrosion behavior of the sol-gel coating. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3170 / 3176
页数：7
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