Galvanic coupling atmospheric corrosion sensor and manufacturing method thereof

Abstract

The invention relates to the field of atmospheric corrosion monitoring, and provides a galvanic couple method atmospheric corrosion sensor and a manufacturing method thereof. The sensor comprises a substrate, wherein a through hole is formed in the substrate; a cathode which is arranged on one side of the substrate and clings to the edge of the through hole; a retaining ring, wherein the retainingring and the cathode are arranged on the same side of the substrate, and the retaining ring surrounds the cathode; a tested metal connecting sheet which is arranged on the other side of the substrateand is used for connecting the sensor and the tested metal. The beneficial effects of the sensor are that the sensor is convenient to operate, high in sensitivity, simple in manufacturing method, lowin cost and suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to the field of atmospheric corrosion monitoring, in particular to a galvanic atmospheric corrosion sensor and a manufacturing method thereof. Background technique [0002] Metal corrosion refers to the phenomenon that the state of the metal material is changed by the action of the medium, and it is transformed into a new phase, thereby being damaged. Metal corrosion directly or indirectly causes significant economic losses every year. According to statistics, the amount of metal scrapped due to corrosion every year in the world is equivalent to 1 / 4 to 1 / 3 of the annual output of metal. Therefore, the monitoring of atmospheric corrosion of metals is very important. The traditional metal atmospheric corrosion monitoring method is the exposure method, which exposes the samples made of the metal to be evaluated to the atmospheric environment, and takes them back for weighing at regular intervals. This method needs to establish a g...

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Problems solved by technology

Under this production process, the thickness of the epoxy resin glue is difficult to control, the consistency is poor and the production cost is high

Moreover, when measuring the corrosion of metals, the object to be tested (such as metal towers, pipes, etc.) cannot be directly used as an anode, and only the metal of the same

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