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Ginger extract as green corrosion inhibitor of mild steel in hydrochloric acid solution

机译：姜提取物作为盐酸溶液中温和钢的绿色腐蚀抑制剂

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Ginger extract as corrosion inhibitor from natural resources was studied to prevent corrosion of mild steel in acid media. Ginger rhizome was extracted to produce green corrosion inhibitor (G-1) while ginger powder bought at supermarket was also extract to form green corrosion inhibitor (G-2). Effectiveness of inhibitor in preventing corrosion process of mild steel was studied in 1.0 M of hydrochloric acid. The experiment of weight loss method and polarization technique were conducted to measure corrosion rate and inhibition efficiency of mild steel in solution containing 1.0 M of hydrochloric acid with various concentration of inhibitor at room temperature. The results showed that, the rate of corrosion dropped from 8.09 mmpy in solution containing no inhibitor to 0.72 mmpy in solution containing 150g/l inhibitor while' inhibition efficiency up to 91% was obtained. The polarization curve in polarization experiments shows that the inhibition efficiency is 86% with high concentration of inhibitor. The adsorption of ginger extract on the surface of mild steel was observed by using optical microscope and the characterization analysis was done by using pH measurement method. When high concentration of green inhibitor in the acid solution is used, the pH at the surface of steel is increasing.
机译：研究了姜提取物作为来自自然资源的腐蚀剂，以防止酸性介质中的低碳钢腐蚀。提取姜根茎以产生绿色腐蚀抑制剂（G-1），而在超市购买的生姜粉末也被提取以形成绿色腐蚀抑制剂（G-2）。在1.0米的盐酸中研究了抑制剂预防温和钢腐蚀过程的效果。进行了体重减轻方法和偏振技术的实验，以测量含有1.0米盐酸溶液中温和钢的腐蚀速率和抑制效率，在室温下具有各种浓度的抑制剂。结果表明，在含有150g / L抑制剂的溶液中不含抑制剂的溶液中腐蚀速率从809毫米掉落到0.72mmpy，同时获得高达91％的抑制效率。偏振实验中的偏振曲线表明，抑制效率为86％，具有高浓度的抑制剂。通过使用光学显微镜观察姜提取物在温和钢表面上的吸附，并使用pH测定方法进行表征分析。当使用酸溶液中的高浓度的绿色抑制剂时，钢表面的pH正在增加。

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