An electrochemical and superficial assessment of the corrosion behavior of AA 2024-T3 treated with metacryloxypropylmethoxysilane and cerium nitrate

被引：30

作者：

Tamborim, S. M. ^{[1
]}

Maisonnave, A. P. Z. ^{[1
]}

Azambuja, D. S. ^{[1
]}

Englert, G. E. ^{[2
]}

机构：

[1] Univ Fed Rio Grande do Sul, Inst Quim, BR-91501970 Porto Alegre, RS, Brazil

[2] Univ Fed Rio Grande do Sul, Dept Met, BR-91501970 Porto Alegre, RS, Brazil

来源：

SURFACE & COATINGS TECHNOLOGY | 2008年 / 202卷 / 24期

关键词：

AA2024-T3; Metacryloxypropylmethoxysilane; Cerium nitrate; Corrosion;

D O I：

10.1016/j.surfcoat.2008.06.173

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The present work aims at studying the corrosion behavior of treatments based on the deposition of layers of metacryloxypropylmethoxysilane (MAOS) and/or cerium nitrate on aluminum alloy 2024 T-3 (AA2024-T3). The Corrosion resistance was evaluated by electrochemical impedance spectroscopy (EIS) during immersion in 0.1 M Na2SO4 and NaCl Solutions. Atomic force microscopy (AFM), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were also Used to perform a surface analysis before and after the treatments. The electrochemical results show that cerium nitrate, when present between two layers of MAOS (sandwich-type deposited layer), improves the corrosion resistance. This can be attributed to the presence of an internal layer rich in silicium and cerium and another external MAOS layer, which further improves the barrier effect of the layer. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：5991 / 6001

页数：11

共 33 条

[1] The adsorption of alkoxysilanes on oxidised aluminium substrates [J].

Abel, ML ;

Watts, JF ;

Digby, PP .

INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES, 1998, 18 (03) :179-192

[2] Understanding the relationship between silane application conditions, bond durability and locus of failure [J].

Abel, ML ;

Allington, RD ;

Digby, RP ;

Porritt, N ;

Shaw, SJ ;

Watts, JF .

INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES, 2006, 26 (1-2) :2-15

[3] THE INVESTIGATION OF CERIUM AS A CATHODIC INHIBITOR FOR ALUMINUM-COPPER ALLOYS [J].

ALDYKIEWICZ, AJ ;

ISAACS, HS ;

DAVENPORT, AJ .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1995, 142 (10) :3342-3350

[4] The inhibitive action of metacryloxypropylmethoxysilane (MAOS) on aluminium corrosion in NaCl solutions [J].

Beccaria, AM ;

Chiaruttini, L .

CORROSION SCIENCE, 1999, 41 (05) :885-899

[5] LANTHANIDE SALTS AS ALTERNATIVE CORROSION-INHIBITORS [J].

BERNAL, S ;

BOTANA, FJ ;

CALVINO, JJ ;

MARCOS, M ;

PEREZOMIL, JA ;

VIDAL, H .

JOURNAL OF ALLOYS AND COMPOUNDS, 1995, 225 (1-2) :638-641

[6] AC-IMPEDANCE MEASUREMENTS ON ALUMINUM BARRIER TYPE OXIDE-FILMS [J].

BESSONE, J ;

MAYER, C ;

JUTTNER, K ;

LORENZ, WJ .

ELECTROCHIMICA ACTA, 1983, 28 (02) :171-175

[7] The role of precipitates enriched with copper on the susceptibility to pitting corrosion of the 2024 aluminium alloy [J].

Blanc, C ;

Lavelle, B ;

Mankowski, G .

CORROSION SCIENCE, 1997, 39 (03) :495-510

[8] Modelling the corrosion behaviour of Al2CuMg coarse particles in copper-rich aluminium alloys [J].

Blanc, Christine ;

Freulon, Alexandre ;

Lafont, Marie-Christine ;

Kihn, Yolande ;

Mankowski, Georges .

CORROSION SCIENCE, 2006, 48 (11) :3838-3851

[9] THE APPLICATION OF ELECTROCHEMICAL IMPEDANCE TECHNIQUES TO ALUMINUM CORROSION IN ACIDIC CHLORIDE SOLUTION [J].

BRETT, CMA .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 1990, 20 (06) :1000-1003

[10] Analytical characterisation and corrosion behaviour of bis-[triethoxysilylpropyl]tetrasulphide pre-treated AA2024-T3 [J].

Cabral, A ;

Duarte, RG ;

Montemor, MF ;

Zheludkevich, ML ;

Ferreira, MGS .

CORROSION SCIENCE, 2005, 47 (03) :869-881

← 1 2 3 4 →