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首页> 外文期刊>Corrosion Engineering, Science and Technology >Monomers of lignin as corrosion inhibitors for mild steel: study of their behaviour by factorial experimental design
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Monomers of lignin as corrosion inhibitors for mild steel: study of their behaviour by factorial experimental design

机译：木质素作为低碳钢腐蚀抑制剂的单体：通过析因实验设计研究其行为

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摘要

This paper investigates the role of monomers of lignin on the corrosion inhibition of mild steel and their main and interaction effects on the corrosion parameters. A combination of statistical analysis and interaction contour plots has been employed to obtain an in depth understanding of the corrosion variables. Electrochemical tests were performed on three lignin monomers namely p-coumaric acid (CA), ferulic acid (FA) and hydroxybenzaldehyde (HB) on mild steel in near neutral solution. The CA and FA showed better inhibition of more than 70%, especially at higher concentrations. A full factorial method was used to study the main and interaction effects on these monomers. P-coumaric acid and FA have shown good inhibition with the greatest interaction effect with each other on the inhibition efficiency. Although HB had the lowest effect on inhibitor efficiency (%/E), its interaction with other monomers was significant. An empirical equation has been derived from test results to describe the relationship between the variables. Analysis of variance on the corrosion parameter shows a normalised distribution and confirms the suitability of this model. Scanning electron micrographs also showed an increase in inhibition with the metal surface with increasing inhibitor concentration.
机译：本文研究了木质素单体在低碳钢腐蚀抑制中的作用及其主要和相互作用对腐蚀参数的影响。统计分析和相互作用等高线图的结合已被用来获得对腐蚀变量的深入理解。在低中性溶液中对低碳钢上的三种木质素单体（对香豆酸（CA），阿魏酸（FA）和羟基苯甲醛（HB））进行了电化学测试。 CA和FA表现出超过70％的更好抑制效果，尤其是在较高浓度下。使用完全析因法研究了这些单体的主要作用和相互作用。对香豆酸和FA表现出良好的抑制作用，彼此之间的抑制作用最大。尽管HB对抑制剂效率的影响最低（％/ E），但它与其他单体的相互作用非常显着。从测试结果中得出了一个经验方程，以描述变量之间的关系。腐蚀参数的方差分析显示归一​​化分布，并确认了该模型的适用性。扫描电子显微照片还显示，随着抑制剂浓度的增加，金属表面的抑制作用也增加。

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