磷酸三乙酯与稀土铈 (IV) 离子在盐酸溶液中对Cu的缓蚀协同效应

doi:10.11902/1005.4537.2013.152

中国腐蚀与防护学报

2014, Vol. 34

Issue (3): 271-276 DOI: 10.11902/1005.4537.2013.152

本期目录 | 过刊浏览

磷酸三乙酯与稀土铈 (IV) 离子在盐酸溶液中对Cu的缓蚀协同效应

曾慧晶¹, 李光勇², 吴欢¹, 高立新¹, 张大全¹(

)

1. 上海电力学院环境与化学工程学院上海 200090
2. 河南省医药技师学院制药工程系开封 475004

Synergistic Effect of Triethyl Phosphate and Cerium (IV) Ion on Corrosion Inhibition for Copper in Hydrochloric Acid Solution

ZENG Huijing¹, LI Guangyong², WU Huan¹, GAO Lixin¹, ZHANG Daquan¹(

)

1. School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
2. Department of Pharmaceutical Engineering, Henan College of Medical Technician, Kaifeng 475004, China

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摘要:

采用电化学阻抗和动电位极化曲线研究了磷酸三乙酯 (TEP) 对Cu在0.5 mol/L盐酸溶液中的缓蚀作用,考察了TEP与稀土Ce⁴⁺对Cu在0.5 mol/L盐酸溶液中的协同作用。结果表明,在TEP浓度不变的情况下,随着Ce⁴⁺浓度的增加,缓蚀率先增后减,当Ce⁴⁺浓度为1.0 mmol/L时,缓蚀效果最好。在Ce⁴⁺浓度不变的情况下,随着TEP浓度的增加,缓蚀率逐渐增大。当复配缓蚀剂浓度为1 mmol/L Ce⁴⁺+58.7 mmol/L TEP时,其缓蚀率达到最大,为80.6%。

关键词 ：磷酸三乙酯, Ce⁴⁺, Cu, 缓蚀, 协同效应

Abstract：

The inhibition effect of triethyl phosphate (TEP) and the synergistic effect of TEP and rare earth Ce⁴⁺ on the corrosion of copper in 0.5 mol/L hydrochloric acid solution were studied by electrochemical impedance spectra and potentiodynamic polarization curve. The result reveals that the inhibition efficiency of the mixed inhibitor increases with the increase of the concentration of Ce⁴⁺ until the critical concentration is reached when TEP concentration remains unchanged. When Ce⁴⁺ concentration remains unchanged, the inhibition efficiency increased with the increase of the concentration of TEP, reaching 80.6% at 1 mmol/L Ce⁴⁺ and 58.7 mmol/L TEP.

Key words： triethyl phosphate Ce⁴⁺ copper corrosion inhibition synergism

收稿日期: 2013-07-31

ZTFLH:

TG174.42

基金资助:国家自然科学基金项目(20776083和20911140272)资助

作者简介: null

曾慧晶，男，1986年生，硕士生，研究方向为金属腐蚀与防护

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引用本文:

曾慧晶, 李光勇, 吴欢, 高立新, 张大全. 磷酸三乙酯与稀土铈 (IV) 离子在盐酸溶液中对Cu的缓蚀协同效应[J]. 中国腐蚀与防护学报, 2014, 34(3): 271-276.
Huijing ZENG, Guangyong LI, Huan WU, Lixin GAO, Daquan ZHANG. Synergistic Effect of Triethyl Phosphate and Cerium (IV) Ion on Corrosion Inhibition for Copper in Hydrochloric Acid Solution. Journal of Chinese Society for Corrosion and protection, 2014, 34(3): 271-276.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2013.152 或 https://www.jcscp.org/CN/Y2014/V34/I3/271

图1

图2

表1 Cu电极在0.5 mol/L盐酸中浸泡1 h后的电化学阻抗参数

图3

图4

表2 Cu电极在含不同缓蚀剂的0.5 mol/L盐酸溶液中浸泡1 h后的电化学阻抗参数

图5

图6

表3 Cu电极在加有不同浓度TEP的0.5 mol/L盐酸溶液中浸泡1 h后的极化曲线电化学参数

表4 Cu电极在加有TEP和Ce4+复配缓蚀剂的0.5 mol/L盐酸溶液中浸泡1 h后的极化曲线电化学参数

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