The corrosion resistance of hot dip galvanised steel and AA2024-T3 pre-treated with bis-[triethoxysilylpropyl] tetrasulfide solutions doped with Ce(NO3)3

被引：159

作者：

Cabral, A. M.

Trabelsi, W.

Serra, R.

Montemor, M. F.

Zheludkevich, M. L.

Ferreira, M. G. S. ^{[1
]}

机构：

[1] Univ Aveiro, Dept Ceram & Glass Engn, P-3810193 Aveiro, Portugal

[2] DEQ, ICEMS, Inst Super Tecn, P-1049001 Lisbon, Portugal

[3] Inst Super Engn Lisboa, DEQ, P-1950062 Lisbon, Portugal

[4] ENIT, Unite Rech Corros, Tunes, Tunisia

来源：

CORROSION SCIENCE | 2006年 / 48卷 / 11期

关键词：

AA2024-T3; galvanised steel; EIS; SVET; bis-silane (BTESPT);

D O I：

10.1016/j.corsci.2006.01.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present work aims at evaluating the anti-corrosion behaviour of a novel pre-treatment based on bis-[triethoxysilylpropyl] tetrasulfide (BTESPT) doped with cerium nitrate for application on hot dip galvanised steel and AA2024-T3 substrates. The corrosion resistance was evaluated by electrochemical impedance spectroscopy (EIS) and by the scanning vibrating electrode technique (SVET), during immersion in NaCl solutions. The electrochemical results showed that the pre-treatment provides excellent corrosion protection to the substrates. Furthermore, the results evidenced improved protection comparatively to the use of undoped BTESPT pre-treatments, both for galvanised steel and AA2024-T3. This improvement is most likely due to enhanced barrier properties of the film and additional active corrosion protection originated from the inhibiting action of the cerium-based inhibitor impregnated in the silane matrix. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：3740 / 3758

页数：19

共 42 条

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