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中国腐蚀与防护学报
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十八硫醇自组装膜对电偶腐蚀的抑制作用
万俐1,杜伟李佳佳2,丁毅2,陈步荣2
1. 南京博物院
2. 南京工业大学
Inhibition effect of the odtadecanethiol self-assembled monolayers for bronze-silver galvanic Corrosion
全文: PDF(408 KB)  
摘要: 

针对错银铜器的青铜-银电偶腐蚀问题,采用十八硫醇(ODT)的乙醇溶液在青铜和银表面制备了自组装膜(SAMs)。通过测量青铜-银的电偶对电流,研究了自组装前后的电偶腐蚀性能,并且采用X光电子能谱(XPS)、Tafel极化曲线法和微分电容法初步研究了ODT SAMs的作用机理。结果表明:ODT分子通过硫原子与基体形成硫醇盐,吸附在青铜和银表面形成自组装膜,该自组装膜在3.5%NaCl溶液中具有良好的电化学稳定性,能够有效抑制青铜和银之间的电偶腐蚀,属于混和抑制型缓蚀剂。

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. Corrosion inhibition and function mechanism of ODT SAMs were investigated by couple corrosion current, XPS, polarization curves and differential capacity methods. The results show that ODT molecular adsorbs on the surface of bronze and silver to form SAMs through the formation of thiolate. In NaCl solution of 3.5% concentration, the ODT SAMs have a good electrochemical stability and prohibit the galvanic corrosion between bronze and silver effectively. ODT SAMs are a kind of mixed inhibition inhibitors.

收稿日期: 2012-06-26     
ZTFLH:  TG172.3  
通讯作者: 陈步荣   

引用本文:

万俐 杜伟 李佳佳 丁毅 陈步荣. 十八硫醇自组装膜对电偶腐蚀的抑制作用[J]. 中国腐蚀与防护学报, .

链接本文:

https://www.jcscp.org/CN/Y0/V0/I0/0

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