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首页> 外文期刊>Journal of industrial and engineering chemistry >Electrochemical and quantum chemical investigation of inhibitory of 1,4-Ph(OX)2(Ts)2 on corrosion of 1005 aluminum alloy in acidic medium
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Electrochemical and quantum chemical investigation of inhibitory of 1,4-Ph(OX)2(Ts)2 on corrosion of 1005 aluminum alloy in acidic medium

机译：1,4-Ph（OX）2（Ts）2抑制1005铝合金在酸性介质中腐蚀的电化学和量子化学研究

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摘要

The 3,3'-(1,4-phenylene)bis(2-imino-2,3-dihydrobenzo[d]oxazole-5,3-iyl)bis(4-thylbenzenesulfonate) (1,4-Ph(OX)2(Ts)2) was synthesized and its inhibiting action on the corrosion of 1005 aluminum alloy (Al) in sulphuric acid was investigated by means of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). In the potentiodynamic polarization measurements the values of β_c had small changes with increasing inhibitor concentration, which indicated that the 1,4-Ph(OX)2(Ts)2 was adsorbed on the metal surface and the addition of the inhibitor hindered the acid attack on the Al electrode. In anodic domain, the value of β_a decreases with the presence of 1,4-Ph(OX)2(Ts)2. The shift in the anodic Tafel slope β_α might be attributed to the modification of anodic dissolution process due to the inhibitor modules adsorption on the active sites. The inhibition efficiencies were obtained from weight loss measurement and electrochemical tests.
机译：3,3'-（1,4-亚苯基）双（2-亚氨基-2,3-二氢苯并[d]恶唑-5,3-基）双（4-乙基苯磺酸盐）（1,4-Ph（OX）合成了2（Ts）2），并通过电位动力学极化和电化学阻抗谱（EIS）研究了其对1005铝合金（Al）在硫酸中腐蚀的抑制作用。在电势极化测量中，β_c的值随抑制剂浓度的增加而有很小的变化，这表明1,4-Ph（OX）2（Ts）2被吸附在金属表面，抑制剂的加入阻碍了酸的侵蚀在铝电极上。在阳极域，β_a的值随着1,4-Ph（OX）2（Ts）2的存在而降低。阳极塔菲尔斜率β_α的变化可能归因于抑制剂模块吸附在活性位点上，从而改变了阳极溶解过程。抑制效率通过重量损失测量和电化学测试获得。

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