How to effectively prevent corrosion caused by hydrogen gas evolution during electrolytic coil/plate process?
Publish Time: 2025-02-10
During the electrolysis process, electrolytic coil/plate often faces corrosion problems caused by hydrogen precipitation. This not only affects the performance and service life of the equipment, but may also cause safety hazards. Therefore, it is crucial to take effective measures to prevent this corrosion.Hydrogen precipitation corrosion usually occurs at the cathode of the electrolysis reaction. When hydrogen ions are reduced to hydrogen atoms by electrons on the cathode and then combined into hydrogen molecules for precipitation, this process may be accompanied by corrosion of the cathode material. For electrolytic coil/plate, especially for parts made of materials such as low-carbon steel, this corrosion is particularly obvious.In order to effectively prevent corrosion caused by hydrogen precipitation during electrolytic coil/plate electrolysis, the following strategies can be adopted:First, optimizing electrolysis conditions is the key. The corrosion rate can be slowed down by adjusting the composition, concentration and temperature of the electrolyte, as well as controlling the electrolysis current and voltage. For example, reducing the concentration of hydrogen ions in the electrolyte can reduce the amount of hydrogen precipitation, thereby reducing the risk of corrosion. At the same time, maintaining a suitable electrolysis temperature helps to improve electrolysis efficiency and reduce corrosion.Secondly, surface treatment of electrolytic coil/plate is also an effective anti-corrosion measure. For example, metal plating technologies such as nickel plating and zinc plating can be used to improve the corrosion resistance of the material. These plating layers can form a protective layer to isolate the direct contact between the electrolyte and the substrate, thereby reducing the occurrence of corrosion.In addition, the reasonable design of the electrolytic cell structure is also an important aspect of preventing corrosion. By optimizing the sealing performance of the electrolytic cell and preventing electrolyte leakage and sputtering, the corrosion of the electrolytic coil/plate can be reduced. At the same time, ensure that the electrolyte in the electrolytic cell flows evenly to avoid excessive local concentrations that lead to increased corrosion.Finally, regular inspection and maintenance of the electrolytic coil/plate is also essential. By regularly detecting corrosion conditions and promptly discovering and dealing with potential corrosion problems, the service life of the equipment can be extended. At the same time, keeping the electrolytic coil/plate clean and dry can also help reduce the occurrence of corrosion.In summary, preventing electrolytic coil/plate from corrosion due to hydrogen evolution during electrolysis requires multiple approaches. By optimizing electrolysis conditions, performing surface treatment, rationally designing the electrolytic cell structure, and performing regular inspections and maintenance, the corrosion rate can be effectively slowed down and the performance and service life of the equipment can be improved.
