铸铁文物复合气相缓蚀剂的复配与研究

doi:10.11902/1005.4537.2014.068

中国腐蚀与防护学报

2015, Vol. 35

Issue (3): 265-270 DOI: 10.11902/1005.4537.2014.068

研究报告

本期目录 | 过刊浏览

铸铁文物复合气相缓蚀剂的复配与研究

滕飞,井宇阳,胡钢(

)

Research of Compound Volatile Corrosion Inhibitors for Cast Iron Relics

Fei TENG,Yuyang JING,Gang HU(

)

School of Archaeology and Museology, Peking University, Beijing 100871, China

全文: PDF(943 KB) HTML

摘要:

以碳酸环己胺 (CHC) 为主体,通过与其它缓蚀剂复配,筛选出可用于铸铁文物保护的高效复合气相缓蚀剂。用极化曲线,电化学阻抗谱和XPS等手段研究了该复合气相缓蚀剂的缓蚀作用机理。结果表明：CHC与乌洛托品复配,具有良好的协同缓蚀效果,当乌洛托品与CHC以1∶4的质量比复配时,缓蚀率可达96.61%。该复合气相缓蚀剂是以抑制阳极反应为主的混合型缓蚀剂,能够和铸铁发生化学吸附而形成缓蚀性能良好的保护膜。

关键词 ：复合气相缓蚀剂, 铸铁, 缓蚀机理

Abstract：

Applying volatile corrosion inhibitors is an effective way to protect cast iron relics. Herewith several new formulas of compounds of cyclohexylamine carbonate (CHC) with various kinds of inhibitors were designed and prepared for cast iron. Then their performance of corrosion inhibition was studied by means of electrochemical measurements and XPS. Results show among others that CHC with methenamine exhibits significant synergistic effect, i.e. a compound of mixed methenamine and CHC with a mass ratio 1∶4 exhibits the highest inhibition efficiency up to 96.61%. This mix-type compound inhibitor, which mainly suppressed the anodic reaction, could be chemically absorbed on the cast iron surface to act as a well-functioned protective film for cast iron relics.

Key words： compound volatile corrosion inhibitor cast iron inhibition mechanism

基金资助:教育部人文社会科学基金项目 (09YJC780002) 资助

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引用本文:

滕飞,井宇阳,胡钢. 铸铁文物复合气相缓蚀剂的复配与研究[J]. 中国腐蚀与防护学报, 2015, 35(3): 265-270.
Fei TENG, Yuyang JING, Gang HU. Research of Compound Volatile Corrosion Inhibitors for Cast Iron Relics. Journal of Chinese Society for Corrosion and protection, 2015, 35(3): 265-270.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2014.068 或 https://www.jcscp.org/CN/Y2015/V35/I3/265

图1 气相缓蚀性能实验装置示意图

表1 不同缓蚀剂复配后的缓蚀结果

图2 不同缓蚀剂条件下铸铁电极的极化曲线

图3 不同缓蚀剂条件下铸铁电极的Nyquist图

表2 不同缓蚀剂条件下铸铁电极极化曲线的电化学参数

图4 不同缓蚀剂条件下拟合的等效电路

表3 电化学阻抗的拟合参数值

图5 预膜前后铸铁试样的XPS全谱, Fe分谱和O分谱

图6 预膜后铸铁试样的N分谱

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