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Adsorption, Thermodynamic, and Experimental Studies of Corrosion Inhibitor of Tin in 0.2 M Maleic Acid by Hydrogen Phosphate Ions (HPO42−)
Electroanalysis ( IF 2.7 ) Pub Date : 2020-09-02 , DOI: 10.1002/elan.202060406 Brahim Ait Addi 1 , Abdelaziz Ait Addi 1 , Abdul Shaban 2 , El‐Habib Ait Addi 3 , Mohamed Hamdani 1
Electroanalysis ( IF 2.7 ) Pub Date : 2020-09-02 , DOI: 10.1002/elan.202060406 Brahim Ait Addi 1 , Abdelaziz Ait Addi 1 , Abdul Shaban 2 , El‐Habib Ait Addi 3 , Mohamed Hamdani 1
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The inhibition efficiency of H2PO42− ions against tin corrosion in 0.2 M maleic acid is studied using electrochemical methods, surface analytical methods, and thermodynamic analysis. The potentiodynamic polarization plots showed the presence of an active/passive transition state of the tin electrode. The EIS measurements confirmed that the inhibition efficiency of H2PO42− increased by increasing the concentration (η=81 % at Cinh=2.10−2 M) and decreased by rising the temperature. The polarization tests demonstrated that the inhibitor performs as a cathodic‐type. The adsorption of the inhibitor was spontaneous and followed the Langmuir adsorption isotherm. A model of the inhibition mechanism was suggested.
中文翻译：
磷酸氢根离子（HPO42-）在0.2 M马来酸中锡对锡的吸附，热力学和实验研究
利用电化学方法，表面分析方法和热力学分析研究了H 2 PO 4 2-离子对0.2 M马来酸中锡腐蚀的抑制作用。电位动力学极化图显示了锡电极存在主动/被动过渡态。EIS测量结果证实，H 2 PO 4 2-的抑制效率通过增加浓度而增加（在C inh = 2.10 -2时， η= 81％ M），并通过升高温度降低。极化测试表明该抑制剂表现为阴极型。抑制剂的吸附是自发的，并且遵循Langmuir吸附等温线。提出了抑制机制的模型。
更新日期：2020-09-02
中文翻译：
磷酸氢根离子（HPO42-）在0.2 M马来酸中锡对锡的吸附，热力学和实验研究
利用电化学方法，表面分析方法和热力学分析研究了H 2 PO 4 2-离子对0.2 M马来酸中锡腐蚀的抑制作用。电位动力学极化图显示了锡电极存在主动/被动过渡态。EIS测量结果证实，H 2 PO 4 2-的抑制效率通过增加浓度而增加（在C inh = 2.10 -2时， η= 81％ M），并通过升高温度降低。极化测试表明该抑制剂表现为阴极型。抑制剂的吸附是自发的，并且遵循Langmuir吸附等温线。提出了抑制机制的模型。
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