期刊
CORROSION SCIENCE
卷 92, 期 -, 页码 127-135出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.11.048
关键词
Aluminum; Alloy; Organic coatings; AFM; XPS
资金
- NSFC [21173187, 51371159]
- NCET
- Fundamental Research Funds for the Central Universities
In the second part of this series work, the protection mechanism of epoxy-silane coatings was further investigated by combined use of sum frequency generation vibrational spectroscopy, FTIR mapping, XPS and AFM, from the microscopic point of view. Results showed that silane components, no matter gamma-aminopropyltrimethoxy silane or bis-1,2-[triethoxysilyl]ethane, enhance the ordering of functional groups and exhibit healing effect and thus provide improved corrosion performance of superprimers. Phase separation was detected in epoxy coatings laced with immiscible bis-silane. Such phenomenon was gradually disappearing with prolonging the immersion, as a result of phase re-organization caused by the cross-linking reaction between silanes. (C) 2014 Elsevier Ltd. All rights reserved.
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