[1]收稿日期: 0-0-0 修回日期: 0-0-.CTAB对SA210C钢在酸性环境中腐蚀电化学行为的影响[J].电镀与精饰,2024,(11):9-16.
 Mao Xiaofei Liu Xuanyi Liu Shuaiqi Xu Yuanyuan Huang Shifu Dong Xuefeng He Hualin Liu Guangming *.Effect of CTAB on the corrosion behavior of SA210C steel in an acidic environment[J].Plating & Finishing,2024,(11):9-16.
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CTAB对SA210C钢在酸性环境中腐蚀电化学行为的影响()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2024年11
页码:
9-16
栏目:
出版日期:
2024-11-15

文章信息/Info

Title:
Effect of CTAB on the corrosion behavior of SA210C steel in an acidic environment
作者:
收稿日期: 2024-01-05 修回日期: 2024-01-21
4-01-21 作者简介: 毛晓飞( 1978 —)
Author(s):
Mao Xiaofei 1 Liu Xuanyi 1 Liu Shuaiqi 2 Xu Yuanyuan 1 Huang Shifu 1 Dong Xuefeng 1 He Hualin 3 Liu Guangming 2*
( 1.Wuhan Branch of National Energy Group Science and Technology Research Institute Co. Ltd. Wuhan 430070 China 2.School of Material Science and Engineering Nanchang Hangkong University Nanchang 330063 China 3.Chengdu Nuo Jia Weiye Technology Co. Ltd. Chengdu 611330 China )
关键词:
SA210C 钢 CTAB 缓蚀剂酸性环境电化学测试腐蚀
Keywords:
SA210C steel cetyltrimethylammonium bromide CTAB corrosion inhibitor acidic environment electrochemical test corrosion
分类号:
TG172
文献标志码:
A
摘要:
针对不同浓度十六烷基三甲基溴化铵( CTAB )对 SA210C 钢在两种酸性模拟溶液中的缓蚀效果,采用动电位扫描曲线与电化学阻抗谱( EIS )方法分析了不同条件下 SA210C 钢电化学腐蚀特征,计算了不同浓度缓蚀剂的缓蚀效率( IE , % ),研究了 pH 值和缓蚀剂对腐蚀速率的影响。结果表明:未添加缓蚀剂时, SA210C 钢在 pH=6.5 模拟溶液中自腐蚀电位较在 pH=5.5 溶液中更正,但腐蚀电流密度有所下降;添加缓蚀剂后, SA210C 钢在相同 pH 值下自腐蚀电位和腐蚀电流密度均呈现先减小后增大趋势,缓蚀剂添加量为 60 mg/L 时缓蚀效率达到最高值 75.60% 。 pH 值降低时, SA210C 钢容抗弧半径减小,减小趋势与规律同极化曲线所得规律一致。因此,未添加缓蚀剂时, SA210C 钢在酸性环境中表现为活性溶解状态;与 pH=5.5 溶液相比, SA210C 钢在 pH=6.5 溶液中腐蚀倾向高但腐蚀速率较缓慢。随着 CTAB 添加量的增加,其对 SA210C 钢在酸性环境中的缓蚀效果呈现先增大后减小趋势,缓蚀剂浓度为 60 mg/L 时有最佳缓蚀效果,继续添加至 80 mg/L 后,缓蚀效果显著下降。
Abstract:
: This work investigates the corrosion inhibition effect of different concentrations of cetyltrimethylammonium bromide ( CTAB ) on SA210C steel in two acidic simulated solutions. The electrochemical corrosion characteristics of SA210C steel under different conditions were analyzed by potentiodynamic polarization ( PDP ) curves and electrochemical impedance spectroscopy ( EIS ), and the corrosion inhibition efficiencies were calculated for different concentrations of corrosion inhibitors , and the effects of pH and corrosion inhibitor on corrosion rate were also analyzed. It was found that when no corrosion inhibitor was added , the self-corrosion potential of SA210C steel in the simulated solution at pH 6.5 was more positive than that in the solution at pH 5.5 , but the corrosion current density decreased. After the addition of a corrosion inhibitor , the self-corrosion potential and the corrosion current density of SA210C steel showed a trend of decreasing and then increasing under the same pH. The corrosion inhibition efficiency reached a maximum of 75.60% with the addition of an inhibitor of 60 mg/L. The corrosion inhibition efficiency ( IE , % ) of different concentrations of corrosion inhibitors was calculated , and the analysis of the effect of pH and inhibitor on the corrosion rate was also conducted , resulting in 75.60%. As the pH value decreases , the arc radius capacity of the SA210C steel decreases , showing a decreasing trend and following the same law as the polarization curve obtained. The results show that when no corrosion inhibitor is added , SA210C steel exhibits an active dissolution state in an acidic environment. Compared to a solution of pH5.5 , corrosion tendency of SA210C steel is high in a solution of pH6.5 , but the corrosion rate is slow. With the increase of CTAB additive amount , its corrosion inhibition effect on SA210C steel in an acidic environment showed a trend of increasing and then decreasing. The corrosion inhibitor concentration of 60 mg/L has the best corrosion inhibition effect , and continues to decrease significantly when added to 80 mg/L.

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备注/Memo

备注/Memo:
收稿日期: 2024-01-05 修回日期: 2024-01-21 作者简介: 毛晓飞( 1978 —),男,硕士,高级工程师, email : maogun2004@163.com. * 通信作者: 刘光明, email : gemliu@162.com. 基金项目: 国家自然科学基金项目( 51961028 ) . CTAB 对 SA210C 钢在酸性环境中腐蚀电化学行为的影响
更新日期/Last Update: 2024-11-18