电镀锌钢硅烷-有机膦酸复合钝化膜的制备及性能表征

doi:10.61558/2993-074X.2057

电化学（中英文） ›› 2010, Vol. 16 ›› Issue (4): 378-384. doi: 10.61558/2993-074X.2057

电镀锌钢硅烷-有机膦酸复合钝化膜的制备及性能表征

管勇;刘建国;严川伟;

中国科学院金属研究所金属腐蚀与防护国家重点实验室;

收稿日期:2010-11-28 修回日期:2010-11-28 出版日期:2010-11-28 发布日期:2010-11-28

Preparation and Characterization of the Silane-Phosphonic Acid Composite Passivation Coating for Electrogalvanized Steel

GUAN Yong,LIU Jian-guo,YAN Chuan-wei

(State Key Laboratory for Corrosion and Protection,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China

Received:2010-11-28 Revised:2010-11-28 Published:2010-11-28 Online:2010-11-28

摘要/Abstract

摘要： 利用N-(β-氨乙基)-γ-氨丙基三甲氧基硅烷(AAPTMS)、γ-(2,3-环氧丙氧基)丙基三甲氧基硅烷(GPTMS)和1-羟基亚乙基-1,1-二膦酸(HEDP),在电镀锌钢基体上制备了一种新型硅烷-有机膦酸复合钝化膜.X射线光电子能谱、傅立叶变换红外光谱以及中性盐雾试验、动电位极化曲线和电化学阻抗谱测试表明:该复合钝化膜主体结构由Si—O—Si、Si—O—P等组成;120 h中性盐雾试验后白锈面积小于5%,达到铬酸盐彩色钝化膜水平;且其腐蚀反应呈现更为明显的阳极扩散控制特征,属于物理阻挡机制.

关键词: 电镀锌钢, 复合钝化, 硅烷, 有机膦酸, 耐蚀性能

Abstract: A new silane-phosphonic acid composite passivation coating process has been developed for the protection of electrogalvanized steel based on N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane(AAPTMS),γ-(2,3-epoxypropoxy)propyltrimethoxy-silane(GPTMS) and 1-hydroxy ethylidene-1,1-diphosphonic acid(HEDP).The results of X-ray photoelectron spectroscopy(XPS),Fourier transform infrared spectroscopy(FTIR),potentiodynamic polarization scan,electrochemical impedance spectroscopy(EIS) and neutral salt spray(NSS) tests indicated that the major structure of the prepared silane-phosphonic acid composite passivation coating consisted mainly of Si—O—Si and Si—O—P bonds.The area of white rust was not more than 5% of the total panal after 120 h NSS test,which could be compared favourably with the chromate colour passivation coating.However,the corrosion reaction on the anode of the silane-phosphonic acid composite passivation coating had more distinct diffusion control characteristics and belonged to the physical blocking mechanism.

Key words: electrogalvanized steel, composite passivation, silane, phosphonic acid, corrosion resistance

中图分类号:

TQ153

管勇, 刘建国, 严川伟, . 电镀锌钢硅烷-有机膦酸复合钝化膜的制备及性能表征[J]. 电化学（中英文）, 2010, 16(4): 378-384.

GUAN Yong, LIU Jian-guo, YAN Chuan-wei. Preparation and Characterization of the Silane-Phosphonic Acid Composite Passivation Coating for Electrogalvanized Steel[J]. Journal of Electrochemistry, 2010, 16(4): 378-384.

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https://electrochem.xmu.edu.cn/CN/Y2010/V16/I4/378

参考文献

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电镀锌钢硅烷-有机膦酸复合钝化膜的制备及性能表征

Preparation and Characterization of the Silane-Phosphonic Acid Composite Passivation Coating for Electrogalvanized Steel

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