三乙醇胺在蒸馏水中对LaFeCoSi磁致冷材料的缓蚀作用.pdf

The 7th National Conference on Functional Materials and Applications Inhibition of Triethanolamine for Magnetic Refrigeration Material LaFe11.0Co0.7Si1.3 in Distilled Water Min Zhang, Yi Long University of Science and Technology Beijing, School of Material Science and Engineering, Beijing, China, 100083 Email: zhmn9459@ Abstract: The inhibition behavior of triethanolamine for magnetic refrigeration material LaFe11.0Co0.7Si1.3 in distilled water at room temperature has been investigated. Potentiodynamic polarization curves were applied to study the alloy corrosion behavior in the absence or presence of different concentrations of inhibitor. Results revealed that the inhibition efficiency increased with increasing the inhibitor concentration and the inhibitor worked as anodic inhibitor. The solution with 20 mL/L triethanolamine has the best inhibition efficiency reaching the values of inhibition efficiency (ε%) up to 69.9%. Corrosion inhibition mechanisms for inhibitors were proposed in this work. Keywords: Magnetic refrigeration material; Inhibitor; Potentiodynamic polarization; 三乙醇胺在蒸馏水中对 LaFe11.0Co0.7Si1.3 磁致冷材料 的缓蚀作用 张敏，龙毅 材料科学与工程学院，北京科技大学，北京，中国，100083 Email: zhmn9459@ 摘 要：采用动电位极化曲线的方法研究了三乙醇胺在蒸馏水中对LaFe11.0Co0.7Si1.3磁制冷材料的缓蚀 作用。结果表明：缓蚀效率随着缓蚀剂浓度的增大而提高，三乙醇胺的浓度为20 mL/L 时，缓蚀效果 最好。三乙醇胺对LaFe11.0Co0.7Si1.3磁制冷材料是一种阳极型缓蚀剂。 关键词：磁制冷材料；缓蚀剂；动电位极化曲线 1 引言 为原料配制，采用中频感应炉冶炼制备合金，水冷铜