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| Inhibition Effects of Odtadecanethiol Self-assembled Monolayers for Bronze-silver Galvanic Corrosion |
| WAN Li1, DU Wei2, LI Jiajia2, DING Yi2, CHEN Burong2 |
1. Nanjing Museum, Nanjing 210016, China;
2. College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China |
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Abstract Abstract：In order to solve the galvanic corrosion problem between bronze and silver, the self-assemble monolayers(SAMs) of odtadecanrthiol (ODT) was prepared on the surfaces of bronze and silver. The galvanic corrosion between bronze and silver were investigated by couple corrosion current and accelerated discoloration test. Corrosion inhibition and function mechanism of ODT SAMs were investigated by X-ray photoelectron spectroscopy (XPS), polarization curves and differential capacity methods. The results showed that ODT molecular adsorbed on the surface of bronze and silver to form SAMs through the formation of thiolate. In a solution of 3.5%NaCl concentration and sulfur air, the ODT SAMs could prohibit the galvanic corrosion between bronze and silver. ODT SAMs was a kind of mixed inhibitors.
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