首页> 外文期刊>International Journal of Electrochemical Science >Monotriazoles Derived from Uracil and Thymine as Corrosion Inhibitor for API 5L X52 Steel in 1 M H2SO4
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Monotriazoles Derived from Uracil and Thymine as Corrosion Inhibitor for API 5L X52 Steel in 1 M H2SO4

机译:尿嘧啶和胸腺嘧啶中的单三唑类化合物在1 M H 2 SO 4 中对API 5L X52钢具有缓蚀作用

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In this study, the corrosion inhibition of monotriazoles derived from uracil and thymine was studiedwith electrochemical impedance spectroscopy (EIS) on API 5L X52 steel in 1 M H2SO4. The additionof compounds diminished the corrosion process of the steel, with MTBU-I and MTBT-Br being thebest corrosion inhibition compounds with an η of 91% at 15 ppm. Furthermore, the persistence of thefilm showed that both compounds are effective up to 48 hours with an ? above 90%, and at highertemperatures, the MTBT-Br provides a resistant film over the metallic surface up to 50 °C.Hydrodynamic conditions demonstrated that the MTBT-Br afforded good protection against corrosionup to 100 rpm. According to their Langmuir isotherms, the adsorption process for these molecules is acombination of physisorption and chemisorption. Finally, SEM images show a decrease in thecorrosion rate on the metallic surface in the presence of the MTBU-I or MTBT-Br.
机译:在这项研究中,通过电化学阻抗谱(EIS)研究了API 5L X52钢在1 M H2SO4中的尿嘧啶和胸腺嘧啶单三唑的缓蚀性能。化合物的添加减少了钢的腐蚀过程,其中MTBU-1和MTBT-Br是最好的缓蚀剂,其在15 ppm时的η为91%。此外,薄膜的持久性表明,两种化合物在48小时内均有效。高于90%且在更高的温度下,MTBT-Br可以在高达50°C的金属表面上形成一层耐蚀膜。流体力学条件表明MTBT-Br在高达100 rpm的转速下提供了良好的抗腐蚀性能。根据他们的Langmuir等温线,这些分子的吸附过程是物理吸附和化学吸附的结合。最后,SEM图像显示在存在MTBU-1或MTBT-Br的情况下金属表面上的腐蚀速率降低。

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