| 张先勇,陆忠海,刘杰,李传鹏.模拟海水环境中8-羟基喹啉对B10铜合金的缓蚀行为研究[J].装备环境工程,2021,18(10):69-76. ZHANG Xian-yong,LU Zhong-hai,LIU Jie,LI Chuan-peng.Study on the Corrosion Inhibition Behavior of B10 Copper Alloy by 8-hydroxyquinoline in Simulated Seawater Environment[J].Equipment Environmental Engineering,2021,18(10):69-76. |
| 模拟海水环境中8-羟基喹啉对B10铜合金的缓蚀行为研究 |
| Study on the Corrosion Inhibition Behavior of B10 Copper Alloy by 8-hydroxyquinoline in Simulated Seawater Environment |
| 投稿时间：2021-05-19 修订日期：2021-06-18 |
| DOI：10.7643/issn.1672-9242.2021.10.012 |
| 中文关键词: 模拟海水 8-羟基喹啉 铜合金 缓蚀行为 EIS |
| 英文关键词:simulated seawater 8-hydroxyquinoline copper alloy corrosion inhibition behavior EIS |
| 基金项目:国家自然科学基金(51971192 & 51901096)；烟台市科技计划项目(2019XDHZ086)；山东省重大科技创新项目(2019JZZY010908) |
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| Author | Institution |
| ZHANG Xian-yong | Weathering Test and Research Center of Science Technology and Industry for National Defense, Southwest Institute of Technology and Engineering, Chongqing 400039, China |
| LU Zhong-hai | College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China |
| LIU Jie | College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China |
| LI Chuan-peng | College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China |
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| 中文摘要: |
| 目的 研究模拟海水环境中8-羟基喹啉(8-HQ)对B10铜合金的缓蚀行为。方法 采用动电位极化曲线、电化学阻抗谱(EIS)和失重法等手段，研究不同浓度8-HQ在1 mol/L NaCl溶液中对铜合金的缓蚀效果，并采用傅里叶变换红外光谱仪对铜合金表面的锈层成分进行分析。结果 中时，其自腐蚀电流密度减小，阻抗模值增大。随着8-HQ浓度的升高，8-HQ对铜合金的缓蚀效率表现出先升高、后下降的阶段性特征。当铜合金浸泡在10 mg/L 8-HQ的NaCl溶液中时，阻抗模值和缓蚀效率随着浸泡时间的延长总体表现出增大的趋势。同时，对锈层的红外光谱分析进一步证明了Cu(8-HQ)2的存在。结论 8-HQ的存在减小了铜合金在NaCl溶液中的腐蚀速率，这与8-HQ在铜合金表面形成了保护膜，阻止氧从溶液中向阴极区域迁移有关。当8-HQ的质量浓度为10 mg/L时，其对铜合金的缓蚀效果最佳，并且该浓度下铜合金的耐腐蚀性能随着浸泡时间的延长持续上升。主要原因是8-HQ和Cu2+形成的[Cu(Ⅱ)HQ]络合膜与不断增厚的CuCl2保护膜在铜合金表面产生协同作用，从而抑制了电极的腐蚀反应。 |
| 英文摘要: |
| This paper aims to study the corrosion inhibition behavior of 8-hydroxyquinoline (8-HQ) on B10 copper alloy in simulated seawater environment. The corrosion inhibition effect of different concentrations of 8-HQ in 1 mol/L NaCl solution on copper alloy was studied using potential polarization curve, electrochemical impedance spectroscopy (EIS) and weight loss experiments. The composition of the rust layer on the surface of the copper alloy was analyzed by the Fourier Transform Infrared spectrum analyzer (FT-IR). When copper alloy was immersed in NaCl solution with 8-HQ, its self-corrosion current density decreased and the impedance modulus value increased. With the increase of the concentration of 8-HQ, the corrosion inhibition efficiency of 8-HQ on copper alloy showed a stage characteristic of increasing first and then decreasing. When the copper alloy is immersed in 10 mg/L 8-HQ NaCl solution, the impedance modulus value and corrosion inhibition efficiency generally showed an increasing trend with the extension of the immersion time. Meanwhile, the presence of Cu(8-HQ)2 was further proved by the infrared spectrum analysis of the rust layer. The corrosion rate of copper alloy in NaCl solution was reduced due to the presence of 8-HQ, which was related to the formation of a protective film on the surface of copper alloy by 8-HQ to prevent the migration of oxygen from the solution to the cathode region. When the concentration of 8-HQ was 10 mg/L, it had the best corrosion inhibition effect on copper alloy. And the corrosion resistance of the copper alloy at this concentration continued to increase with the extension of the immersion time, which was mainly attributed to the fact that the [Cu(Ⅱ)HQ] chelate film formed by 8-HQ and Cu2+ and the increasing thickness of CuCl2 protective film produced a synergistic effect on the surface of the copper alloy, thereby inhibiting the corrosion reaction of the electrode. |
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