| Autor: |
Dong Ping Wei, Xiao Xiao Huang, Hui Cheng Yu, Yi Chun Wei |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
Advanced Materials Research. :1857-1860 |
| ISSN: |
1662-8985 |
| DOI: |
10.4028/www.scientific.net/amr.557-559.1857 |
| Popis: |
To improve the corrosion resistance of Al alloy, diethylamine (DEA) was added into the sealing solutions. The electrochemical behavior of sealing coatings formed in different concentrations of diethylamine (DEA) was investigated by means of polarization curves and electrochemical impedance spectroscopy (EIS). Compared with the coatings with D. I. water and the bare aluminum alloy, the polarization curves show that the sealing coatings formed in 3.0 – 5.0 ml.L-1 diethylamine (DEA) solutions have more positive corrosion potential (Ecorr) and pitting corrosion potential (Epit), and lower corrosion current density (icorr). Electrochemical parameters of EIS indicate that the sealing coatings have higher corrosion resistance. The electrochemical tests present that the prepared sealing coatings have better corrosion resistance. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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