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首页> 外文期刊>International journal of corrosion >Interesting Behavior ofPachycormus discolorLeaves Ethanol Extract as a Corrosion Inhibitor of Carbon Steel in 1 M HCl: A Preliminary Study
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Interesting Behavior ofPachycormus discolorLeaves Ethanol Extract as a Corrosion Inhibitor of Carbon Steel in 1 M HCl: A Preliminary Study

机译：Pachycormus变色的有趣行为留下乙醇提取物作为碳钢在1 M HCl中的腐蚀抑制剂：初步研究

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The purpose of this paper is to evaluate the inhibitive action of an ethanol extract from the leaves ofPachycormus discolor (EEPD)on the corrosion of carbon steel in 1 M HCl at different temperatures; gravimetric method and electrochemical tests were conducted. Potentiodynamic polarization was used at room temperature and resistance polarization at different temperatures. Thermodynamic adsorption parameters are shown in order to demonstrate the spontaneous adsorption. The inhibition of EEPD was performed via adsorption of the extract species on the carbon steel surface. The ethanol extract obeys Langmuir adsorption isotherm. Potentiodynamic polarization results indicate that the ethanol extract acts as a mixed type inhibitor. The results revealed that the inhibition efficiency (IE) of EEPD increases (when the concentration is increased). Phytochemical and FTIR analyses are also presented in this work. It was found that the IE increases with the temperature in a 2.0% v/v solution which showed 94.52% IE at25°C and 97.89% at75°C.
机译：本文的目的是评估在不同温度下，美洲锥Pa变色叶（EEPD）的乙醇提取物对碳钢在1 M HCl中腐蚀的抑制作用。进行了重量分析法和电化学测试。在室温下使用电位动力极化，在不同温度下使用电阻极化。显示了热力学吸附参数以证明自发吸附。 EEPD的抑制作用是通过将萃取物吸附在碳钢表面上来实现的。乙醇提取物符合Langmuir吸附等温线。电位动力极化结果表明乙醇提取物起混合型抑制剂的作用。结果表明，当浓度增加时，EEPD的抑制效率（IE）增加。这项工作还介绍了植物化学和FTIR分析。发现在2.0％v / v溶液中IE随温度增加而增加，其在25℃下显示94.52％IE，在75℃下显示97.89％。

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