咪唑啉缓蚀剂在NaCl溶液中对2099Al-Li合金的缓蚀行为 |
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引用本文: | 田亚斌,叶昌美,赵宇娟,李林山,杨少华. 咪唑啉缓蚀剂在NaCl溶液中对2099Al-Li合金的缓蚀行为[J]. 有色金属科学与工程, 2018, 9(5): 14-20. DOI: 10.13264/j.cnki.ysjskx.2018.05.003 |
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作者姓名: | 田亚斌 叶昌美 赵宇娟 李林山 杨少华 |
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作者单位: | 江西理工大学冶金与化学工程学院,江西 赣州 341000 |
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基金项目: | 国家自然科学基金资助项目51164013国家自然科学基金资助项目51664022 |
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摘 要: | 采用极化曲线、交流电化学阻抗谱(EIS)和扫描电化学显微镜(SECM)技术研究了咪唑啉在3 %(指质量分数,下同)NaCl溶液中对2099 Al-Li合金的缓蚀行为.结果表明:咪唑啉有很好的缓蚀效果.极化曲线测试和交流阻抗测试都验证了咪唑啉浓度达到0.01 mmol/L时,缓蚀效率达77 %以上的准确性.采用扫描电化学显微镜技术(SECM)研究0.01 mmol/L咪唑啉缓蚀剂在3 % NaCl+5 mmol/LKI溶液中对2099铝锂合金的缓蚀行为.结果表明:在缓蚀剂条件下,合金表面电流峰数量减少,强度减弱.
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关 键 词: | 咪唑啉 2099Al-Li合金 极化曲线 交流电化学阻抗谱(EIS) 扫描电化学显微镜(SECM) |
收稿时间: | 2018-04-02 |
Inhibiting action of imidazoline on the corrosion of 2099 Al-Li alloy in NaCl solution |
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Affiliation: | School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Chinacom |
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Abstract: | The inhibiting action of imidazoline on corrosion of 2099 Al-Li alloy in 3 % It referstothe mass fraction NaCl solution was investigated by polarization curve, electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SECM). The results showed that imidazoline had a good corrosion inhibition effect. When the concentration of imidazoline reached 0.01 mmol/L, the inhibition efficiency was above 77 %. Both polarization and AC impedance tests verified this effect. The inhibiting action of 0.01 mmol/L inhibitor on 2099 Al-Li alloy in 3 % NaCl+5 mmol/L KI solution was investigated by scanning electrochemical microscopy (SECM). The results indicated that under the effect of corrosion inhibitor, both the current peaks and strength of alloy decreased. |
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