| 赵耀,邓豪,程新,时佳顺,陈士强,刘光洲.有机/无机缓蚀剂在模拟混凝土孔隙液中对钢筋缓蚀作用对比研究[J].装备环境工程,2021,18(1):119-128. ZHAO Yao,DENG Hao,CHENG Xin,SHI Jia-shun,CHEN Shi-qiang,LIU Guang-zhou.Comparative Study on Corrosion Inhibition of Organic/Inorganic Inhibitors for Reinforcement in Simulated Concrete Pore Solution[J].Equipment Environmental Engineering,2021,18(1):119-128. |
| 有机/无机缓蚀剂在模拟混凝土孔隙液中对钢筋缓蚀作用对比研究 |
| Comparative Study on Corrosion Inhibition of Organic/Inorganic Inhibitors for Reinforcement in Simulated Concrete Pore Solution |
| 投稿时间：2020-04-11 修订日期：2020-04-21 |
| DOI：10.7643/issn.1672-9242.2021.01.018 |
| 中文关键词: 碳钢 模拟混凝土孔隙液 极化曲线 电化学交流阻抗 缓蚀效率中图分类号:TG174.42 文献标识码:A 文章编号:1672-9242(2021)01-0119-10 |
| 英文关键词::Pitting corrosion of metals. A review of the critical factors[J]. ChemInform, 1998, 29(32):2186-2197. |
| 基金项目:国家自然科学基金(41906039)；山东省重点研发计划(2019JZZY010333)；山东大学青年学者未来计划(62420089964183) |
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| Author | Institution |
| ZHAO Yao | Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China |
| DENG Hao | Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China |
| CHENG Xin | Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China |
| SHI Jia-shun | Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China |
| CHEN Shi-qiang | Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China |
| LIU Guang-zhou | Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China |
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| 中文摘要: |
| 目的 检测和评价五种有机/无机缓蚀剂在含3.5% NaCl的模拟混凝土孔隙液(SCP)中对Q235碳钢的缓蚀效果。方法 采用动电位极化曲线和电化学交流阻抗谱(EIS)测试方法。结果 综合评价后可知，0.0015 mol/L的D-葡萄糖酸钠具有最好的缓蚀效果，浸泡30 d后的Rct可达到282.74×104 Ω.cm2，此时的IE为99.99%，对Q235碳钢在模拟海水混凝土孔隙液中的腐蚀具有最佳应用价值。结论 各缓蚀剂均存在最优浓度/配比，可使钢筋在含Cl－的SCP溶液中的点蚀电位(Eb)和电荷转移电阻(Rct)显著提高，且缓蚀效率(IE)随浸泡时间的延长而增大。 |
| 英文摘要: |
| To evaluate the effects of five organic/inorganic inhibitors on corrosion behavior of Q235 carbon steel in simulated concrete pore solution (SCP) containing 3.5% NaCl through the potentiodynamic polarization curve and electrochemical impedance spectroscopy (EIS). Among of these inhibitors, 0.0015 mol/L D-sodium gluconate shows the best IE, i.e. after soaking for 30 days, Rct and IE reach 282.74×104 Ω.cm2 and 99.99%, respectively. Therefore, 0.0015 mol/L D-sodium gluconate has an optimal application value for Q235 carbon steel in simulated seawater concrete pore solution. Results show that there is the optimal concentration/ratio for each corrosion inhibitor, which significantly improves the pitting potential (Eb) and charge transfer resistance (Rct) of the reinforcement in SCP solution containing Cl‒. The corrosion inhibition efficiency (IE) increases with the immersion time. |
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