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首页> 外文期刊>International Journal of Electrochemical Science >Thiadiazoles as Corrosion Inhibitors for Carbon Steel in H2SO4 Solutions
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Thiadiazoles as Corrosion Inhibitors for Carbon Steel in H2SO4 Solutions

机译：噻二唑作为H 2 SO 4 溶液中碳钢的缓蚀剂

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摘要

Six organic compounds derived from 2-amino-5-alkylthiadiazole were evaluated as corrosioninhibitors of carbon steel 1018 (CS 1018) in 1.0 M H2SO4. The inhibition efficiency displayed by thesynthesized compounds was assessed by mass loss, using a concentration interval of 10-100 ppm at 25and 40 C. The potentiodynamic tests were carried out only with the compounds that showed thelowest [AMT], intermediate [AHT] and highest [ATT] inhibition efficiencies obtained by mass loss.The inhibition efficiency results obtained by both techniques showed that the length of the alkylicchain in this kind of compounds plays a major role in their optimum performance as corrosioninhibitors. In addition, from the analysis of the calculated electrochemical parameters, it was found thatthe evaluated compounds present properties of mixed-type inhibitors. As for the adsorption mechanismon the CS 1018 metal surface in 1.0 M H2SO4, it was found to be of physical type. The57 characterization of the corrosion products formed on CS has been carried out by Fe M艖ssbauerspectroscopy. The major constituent of the rust formed in this environment in the presence of 2-amino- 5-alkylthiadiazole is Szomolnokite.
机译：评估了6种衍生自2-氨基-5-烷基噻二唑的有机化合物作为碳钢1018（CS 1018）在1.0 M H2SO4中的缓蚀剂。通过质量损失评估合成化合物显示的抑制效率，在25和40 C下使用浓度范围为10-100 ppm。仅用显示最低[AMT]，中间[AHT]和最高[AMT]的化合物进行电位动力学测试通过质量损失获得的[ATT]抑制效率。两种技术获得的抑制效率结果表明，这类化合物中烷基链的长度在其作为缓蚀剂的最佳性能中起着重要作用。另外，通过对计算的电化学参数的分析，发现所评价的化合物具有混合型抑制剂的性质。关于在1.0M H 2 SO 4中CS 1018金属表面上的吸附机理，发现是物理类型的。 Fe Mssbauerspectroscopy对CS上形成的腐蚀产物进行了表征。在存在2-氨基-5-烷基噻二唑的情况下在该环境中形成的锈的主要成分是Szomolnokite。

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