Spreading Corrosion-Model of Self-Potential Methods, Case Study of Buried Metal Laboratory Scale
DOI:
https://doi.org/10.24203/ajas.v6i6.5567Keywords:
Self-potential, anomalies, corrosion processes, laboratory experimentsAbstract
Self-potential is a geophysical method as an inexpensive, practical, and simply used measurements. Measuring with this as simply used, make it’s become sensitive to noise and causing difficulties with interpretation. As an environment geophysical method, self-potential would give a good interpretational model. One other way to getting a good model to reduced the noise data. The noise reduction developed by making the experiment box model as the only exploration field. Experiment box model is formed by composing paving blocks at the edge of the box. The purpose of the experiment is to analyze the target, which is a massive iron cylinder, as a physical and chemical reaction. The iron placed in the sandbox which has two conditions, half-down wet and half-up dry. The porous pot made from mini straw which is appropriated with the sandbox dimension and target experiment. The experiment took five weeks as periodically measurement.
The results were potential graphics and two-dimension iso-potential maps. Existing of iron-related to large-amplitude potential anomalies around the target. Thus, corrosion-related to compared periodical-maps of anomaly contour area. The difference of anomaly’s pattern in the last two maps might cause the internal changed of the box model. This experiment indicated that self-potential signals can be used to monitor corrosion processes.
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