Electrochemical behavior and corrosion protection performance of bis[triethoxysilylpropyl] tetrasulfide silane films modified with TiO2 sol on 304 stainless steel

被引：53

作者：

Chen, Shougang ^{[1
]}

Cai, Yuchen ^{[1
]}

Zhuang, Chen ^{[1
]}

Yu, Meiyan ^{[1
]}

Song, Xianwang ^{[1
]}

Zhang, Yuping ^{[1
]}

机构：

[1] Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2015年 / 331卷

关键词：

Stainless steel; EIS; SEM; XPS Polymer coatings; Passive films; HYBRID COATINGS; STEEL; INHIBITION; AA2024-T3; CERIUM; PRETREATMENTS; NANOPARTICLES; RESISTANCE; IMPEDANCE; SIO2;

D O I：

10.1016/j.apsusc.2015.01.008

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 corrosion protection ability of bis-[triethoxysilylpropyl]tetrasulfide/TiO2 composite films was evaluated by potentiodynamic polarization and electrochemical impedance spectroscopy in this paper. The electrochemical results show that the composite films modified with TiO2 sol exhibited superior corrosion protection performance compared to single bis-[triethoxysilylpropyl]tetrasulfide (BTESPT) silane films. The durability and reaction mechanism of BTESPT films and BTESPT/TiO2 composite films were further studied by electrochemical impedance spectroscopy, scanning electron microscopy, reflection absorption Fourier infrared spectroscopy and X-ray photoelectron spectroscopy, the experimental results revealed the loading of TiO2 sol into the porous part of the silane network, which not only increases the compactness and durability of silane films but also improves the interfacial bonding force due to formation of Si-O-Ti bonds. After 15 days immersion in 3.5 wt.% NaCl solution, the BTESPT/TiO2 composite films still had good corrosion resistance ability. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：315 / 326

页数：12

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