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Corrosion performance of epoxy coatings modified by nanoparticulate SiO2 | |
Li, W.1; Tian, H.1,2; Hou, B.1; Li, W (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Corros Sci Shandong, Qingdao 266071, Peoples R China. | |
2012 | |
发表期刊 | MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION |
ISSN | 0947-5117 |
卷号 | 63期号:1页码:44-53 |
文章类型 | Article |
摘要 | Electrochemical impedance spectroscopy (EIS) was employed to investigate the corrosion performance of nanoparticulate SiO2 modified epoxy coatings on carbon steel in 3.5?wt% NaCl solution, coupled with salt spray test. Capacitance-gravimetric methods and delamination tests were performed to analyze the water uptake behavior and interface stability against delamination of modified coatings, respectively. Four systems were studied, including a clear coating and three pigmented coatings (with 1, 2, and 3?wt% nanoparticulate SiO2). The experimental results showed that nanoparticulate SiO2 particles can improve the anti-corrosion performance of the coatings and the optimal addition content is 2?wt%. The results obtained with capacitance-gravimetric measurements showed that the diffusion process of water through epoxy coatings with different pigment volume concentration (PVC) obeyed the second Fick's diffusion law in the initial period. Adding nanoparticulate SiO2 into epoxy coatings can act effectively. The positive influence is attributed to the reaction between nanoparticles and epoxy resin which is confirmed by FTIR, improving the barrier and dispersion effectiveness of coatings. The negative one is increasing the number of pores in the coatings when the adding amount is beyond the critical PVC. |
关键词 | Corrosion Performance Epoxy Coating Modification Nanoparticulate Sio2 |
学科领域 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
DOI | 10.1002/maco.200905620 |
URL | 查看原文 |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000298919900005 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qdio.ac.cn/handle/337002/12462 |
专题 | 海洋环境腐蚀与生物污损重点实验室 |
通讯作者 | Li, W (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Corros Sci Shandong, Qingdao 266071, Peoples R China. |
作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Corros Sci Shandong, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
第一作者单位 | 中国科学院海洋研究所 |
推荐引用方式 GB/T 7714 | Li, W.,Tian, H.,Hou, B.,et al. Corrosion performance of epoxy coatings modified by nanoparticulate SiO2[J]. MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION,2012,63(1):44-53. |
APA | Li, W.,Tian, H.,Hou, B.,&Li, W .(2012).Corrosion performance of epoxy coatings modified by nanoparticulate SiO2.MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION,63(1),44-53. |
MLA | Li, W.,et al."Corrosion performance of epoxy coatings modified by nanoparticulate SiO2".MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION 63.1(2012):44-53. |
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