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首页> 外文期刊>International Journal of Electrochemical Science >Corrosion of High Strength Steel in Concentrated Sulfuric Acid Pickling Solutions and Its Inhibition by 3-Amino-5-mercapto-1,2,3-triazole
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Corrosion of High Strength Steel in Concentrated Sulfuric Acid Pickling Solutions and Its Inhibition by 3-Amino-5-mercapto-1,2,3-triazole

机译：高强度钢在浓硫酸酸洗溶液中的腐蚀及其3-氨基-5-巯基1,2,3-三唑的抑制作用

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摘要

The corrosion of high strength steel after varied exposure periods of time, namely 30, 90 and 180 minimmersion in 2.0 M H2SO4 pickling solution and its inhibition by 3-amino-5-mercapto-1,2,3-triazole(AMTA) were investigated. The study has been carried out using potentiodynamic polarization,electrochemical impedance spectroscopy and complemented by scanning electron microscopy (SEM)and energy dispersive X-ray (EDX) analyzer. It has been found that the increase of exposure periodremarkably the corrosion of steel through increasing the anodic current, cathodic current, corrosioncurrent density and corrosion rate. This effect also decreased both the solution and polarization-3 resistances for the steel in the sulfuric acid solution. The presence of 1x10 M AMTA and the increase-3 of its concentration to 5x10 M highly decreased the corrosion of the steel via the adsorption ofAMTA molecules on its surface precluding its dissolution as was confirmed by the SEM micrographsand EDX profile analyses. Results together confirmed that the corrosion of steel increases with theincrease of time and AMTA is a powerful corrosion inhibitor for the high strength steel in the 2.0 MH2SO4 pickling solutions.
机译：研究了在暴露于不同时间段（即在2.0 M H2SO4酸洗溶液中浸泡30、90和180分钟）后高强度钢的腐蚀及其对3-氨基-5-巯基-1,2,3-三唑（AMTA）的抑制作用。该研究已使用电位动力学极化，电化学阻抗谱进行，并辅以扫描电子显微镜（SEM）和能量色散X射线（EDX）分析仪。已经发现，通过增加阳极电流，阴极电流，腐蚀电流密度和腐蚀速率，暴露时间的增加显着地腐蚀了钢。这种作用还降低了钢在硫酸溶液中的溶液电阻和极化3电阻。 SEM显微照片和EDX谱分析证实，由于1x10 M AMTA的存在以及其浓度增加3至5x10 M，通过AMTA分子在其表面上的吸附（排除了溶解），大大降低了钢的腐蚀。结果共同证明，随着时间的增加，钢的腐蚀也会增加，而AMTA是2.0 MH2SO4酸洗溶液中高强度钢的强大腐蚀抑制剂。

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