Electrochemical characteristics of corrosion behavior of organic/Dacromet composite systems pretreated with gamma-aminopropyltriethoxysilane
文献类型：期刊论文
| 作者 | J. G. Liu ; C. W. Yan |
| 刊名 | Surface & Coatings Technology
 |
| 出版日期 | 2006 |
| 卷号 | 200期号:16-17页码:4976-4986 |
| 关键词 | Dacromet EIS corrosion behavior organic coating composite gamma-APTS pretreatment coating deterioration organic coatings aa 2024-t3 steel impedance aluminum resistance protection eis |
| ISSN号 | 0257-8972 |
| 中文摘要 | The corrosion behavior of four organic/Dacromet composite systems, namely three solvent-borne coatings, polyurethane, alkyd and fluorinated polymer as well as a water-borne coating, styrene-acrylate emulsion, was studied after pretreatment with gamma-aminopropyltriethoxysilane (gamma-APTS). Electrochemical experiment in 3.5% NaCl solution and scanning electron microscopy (SEM) were performed. The results showed that: (1) gamma-APTS treatment increased the polarization resistance but decreased the total impedance of the corrosion reaction contrast to the untreated Dacromet after immersion for a period. (2) The silane pretreatment significantly influenced the corrosion behavior of the organic/Dacromet composite systems mainly through restraining the corrosion of the substrate (Dacromet) by the reduction of the active surface (due to the barrier effect of surface film), which was confirmed by EIS experiments under anodic polarization. (3) Pretreatment with gamma-APTS improved the protective performance of the polyurethane and alkyd/Dacromet composite systems. However, a conversion evolution between the untreated and the pretreated water-borne styrene-acrylate emulsion composite system appeared due to the particular interfacial effect. (4) Parameter Z vertical bar(0.1 Hz) and f(b) in the studied systems manifested a mathematical correlation and the constant K=log (Z vertical bar(0.1 Hz)/fb) could be used in protective performance evaluation for various coatings on substrates. (c) 2005 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34361]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | J. G. Liu,C. W. Yan. Electrochemical characteristics of corrosion behavior of organic/Dacromet composite systems pretreated with gamma-aminopropyltriethoxysilane[J]. Surface & Coatings Technology,2006,200(16-17):4976-4986. |
| APA | J. G. Liu,&C. W. Yan.(2006).Electrochemical characteristics of corrosion behavior of organic/Dacromet composite systems pretreated with gamma-aminopropyltriethoxysilane.Surface & Coatings Technology,200(16-17),4976-4986. |
| MLA | J. G. Liu,et al."Electrochemical characteristics of corrosion behavior of organic/Dacromet composite systems pretreated with gamma-aminopropyltriethoxysilane".Surface & Coatings Technology 200.16-17(2006):4976-4986. |
入库方式： OAI收割
来源：金属研究所
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