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Causes Of Thread Electrode Corrosion And The Method Of Coping

Causes of Thread Electrode corrosion and the method of coping

Magnesium is very lively, the standard electrode potential negative, and the absolute value is large, as a direct result of the poor corrosion resistance of magnesium and Thread Electrode, greatly hindered the Thread Electrode full play their own advantages in the application, at the same time also limits its scope of application. So what are the causes of the erosion of Thread Electrode? Is there any good way to deal with it?

Knowledge point 1: Thread Electrode corrosion

The second phase of the electrode of the threaded electrode is mainly caused by alloy element and impurity element. The corrosion modes of Thread Electrode are: electrodielectric corrosion, pitting, stress corrosion cracking, intergranular corrosion and filamentary corrosion and high temperature oxidation. The electrochemical corrosion is related to the pH value of the solution, the properties of the solution, the composition of the alloy and the environment.

Knowledge point 2: coping

Appropriate control metallurgical factors, including alloy elements, impurity elements, phase composition and microstructure. Surface treatment technology research, such as: screw electrode chemical conversion, anodic oxidation, plasma micro-arc anode oxidation, metal plating and PVD coating technology, etc., for plasma technology to improve thread of electrode corrosion resistance has brought new vitality. It is also possible to use ion injection, laser annealing and rapid solidification process to form a uniform, amorphous surface structure film on the metal surface.

The Thread Electrode corrosion, is mainly due to the alloy elements and impurities to Thread Electrode in the second phase, Thread Electrode chemical corrosion is mostly depends on the pH of the solution, the solution, the properties of alloy composition and the influence of environment and so on. Its corrosion forms include: galvanic corrosion, pitting corrosion, stress corrosion cracking, intergranular corrosion and filamentary corrosion and high temperature oxidation.

In order to improve the life of the Thread Electrode materials, the small pieces feel that it can be used to improve the corrosion resistance of threaded electrode, such as: alloy element, impurity element, phase composition and microstructure. The study of the surface treatment technology of Thread Electrode also brings some vitality to the corrosion resistance of Thread Electrode. Some people choose to use ion injection, laser annealing and rapid solidification, so that the metal surface can form a uniform and amorphous surface structure film.

As the main raw material of metal corrosion, the application of Thread Electrode in cathodic protection is very numerous. In cathodic protection, however, only a Thread Electrode is not enough, we also need the threaded electrode and potentiometer, such as reference electrode used in combination, so that you can play the maximum efficacy of Thread Electrode.

Two sealing caps are set for the use of the threaded electrode to prevent the evaporation of the KCl solution. When used, we need to remove the glue cap below and contact the solution outside the electrode and electrode. As for the choice of the reference electrode, it is best to choose the saturated calomel electrode because of its easy maneuverability and stability. In order to make the cathodic protection system work, the extra current potentiometer, auxiliary anode and reference electrode are used to enhance the function of the cathodic protection

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