| CHEN Gang,LIU Guang-ming,YAO Jing,DU Nan.Study on the Electrochenucal Impedance Spectroscopy of Silicone/Si02 Hybrid Coating[J],37(6):47-50 |
| Study on the Electrochenucal Impedance Spectroscopy of Silicone/Si02 Hybrid Coating |
| Received:September 08, 2008 Revised:December 10, 2008 |
| View Full Text View/Add Comment Download reader |
| DOI： |
| KeyWord:Sol-Gel Silicone/Si02 Hybrid Coating FT-IR EIS |
| Author | Institution |
| CHEN Gang |
School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang , China |
| LIU Guang-ming |
School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang , China |
| YAO Jing |
School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang , China |
| DU Nan |
School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Silicone/Si02 0rganic-inorganic hybrid sol have been prepared from tetraethyl orthosilicate (TEOS) as inorganic precursor, methyl triethoxysilane ( MTES) and diphenyl dimethoxy silane ( DDS) as organic precursor, the hydrochloric acid and water as catalysts, by sol-gel method through the hydrolysis- polycondensation reaction. Then a hybrid material was obtained by drying at 100℃ for 12 hours. The infrared spectrum ( FT-IR) showed that organic and inorganic dual-phase formed a strong interaction in the hybrid material. Thin films were deposited from the hybrid sol using dip-coating techniques. The samples immersed in 3. 50/o NaCl solution for different times were studied by electrochemical impedance spectroscopy ( EIS). The equivalent circuits were established according to the impedance spectral characteristics. The corrosion resistance of hybrid coatings was discussed base on the equivalent circuit and fitted results of electrochemical impedance spectroscopy. The results indicate that the corrosion resistance of the hybrid coatings is excellent in 3.50/o NaCl solution. |
| Close |
|
|
|