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首页> 外文期刊>International Journal of Electrochemical Science >Application of an Acid Extract of Barley Agro-Industrial Waste as a Corrosion Inhibitor for Stainless Steel AISI 304 in H2SO4
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Application of an Acid Extract of Barley Agro-Industrial Waste as a Corrosion Inhibitor for Stainless Steel AISI 304 in H2SO4

机译：大麦农业废料酸提取物作为AISI 304不锈钢腐蚀抑制剂在H 2 SO 4 中的应用

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摘要

Corrosion inhibitors are commonly used to reduce the effects of corrosive processes in metallic materials. However, many compounds are toxic and expensive and have negative effects on the environment. There is growing interest in replacing petroleum inhibitors with biodegradable inhibitors, such as plant extracts. Barley agro-industrial waste (AW) is a source of compounds with great inhibitor activity, and its use is desirable for minimizing the amount of AW. The aim of this paper is to demonstrate the application of an AW extract as a corrosion inhibitor for stainless steel AISI 304 in H2SO4. The efficiency of this acid extract was evaluated by weight loss measurements, scanning electron microscopy (SEM) analysis, open circuit potential (OCP) measurements, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization curves (PP). The proposed extract exhibited an inhibition efficiency of up to 97% and was physically adsorbed in the metallic surface. The SEM images indicated that the addition of the extract decreased metal oxidation. The electrochemical results for steel in the presence of the AW extract acted as a mixed-type inhibitor, likely changing the cathodic mechanism reaction on the uncovered surface. The AW extract can thus be used as an organic corrosion inhibitor.
机译：腐蚀抑制剂通常用于减少金属材料中腐蚀过程的影响。然而，许多化合物有毒且昂贵，并且对环境具有负面影响。用生物可降解抑制剂（例如植物提取物）代替石油抑制剂的兴趣日益浓厚。大麦农业工业废料（AW）是具有强大抑制剂活性的化合物来源，因此希望将其用于最大程度地减少AW量。本文的目的是演示AW提取物作为AISI 304不锈钢在H2SO4中的腐蚀抑制剂的应用。通过重量损失测量，扫描电子显微镜（SEM）分析，开路电势（OCP）测量，电化学阻抗谱（EIS）和电势极化曲线（PP）评估了这种酸提取物的效率。所提出的提取物表现出高达97％的抑制效率，并被物理吸附在金属表面。 SEM图像表明，提取物的添加降低了金属氧化。在存在AW萃取物的情况下，钢的电化学结果充当了混合型抑制剂，可能会改变未覆盖表面上的阴极机理反应。因此，AW提取物可用作有机腐蚀抑制剂。

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