Corrosive effect of the type of soil in the systems of grounding more used (copper and stainless steel) for local soil samples from the city of Tunja (Colombia), by means of electrochemical techniques

3rd International Meeting for Researchers in Materials and Plasma Technology; 1st Symposium on Nanoscience and Nanotechnology

物理学;材料科学

Guerrero, L.^2,3 ; Salas, Y.^1,2,3 ; Blanco, J.^2

Universidad Antonio Nariño, Bogotá, Colombia^1

Universidad Antonio Nariño, Tunja, Colombia^2

Universidad Pedagógica y Tecnológica de Colombia, Tunja, Colombia^3

关键词: Corrosion behaviour;    Electrochemical techniques;    Equivalent parameters;    Laboratory studies;    Linear polarization resistance;    Orders of magnitude;    Retention capacity;    Stainless steel electrode;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/687/1/012017/pdf
DOI  :  10.1088/1742-6596/687/1/012017

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this work electrochemical techniques were used to determine the corrosion behaviour of copper and stainless steel electrodes, used in grounding varying soil type with which they react. A slight but significant change in the corrosion rate, linear polarization resistance and equivalent parameters in the technique of electrochemical impedance spectroscopy circuit was observed. Electrolytes in soils are slightly different depending on laboratory study, but the influence was noted in the retention capacity of water, mainly due to clays, affecting ion mobility and therefore measures such as the corrosion rate. Behaviour was noted in lower potential for copper corrosion, though the corrosion rate regardless of the type of soil, was much higher for electrodes based on copper, by several orders of magnitude.