What is metal galvanic corrosion processing

Electrochemical corrosion of metals refers to the corrosion of metals in an electrolyte solution due to electrochemical reactions. It is characterized by the following: in the corrosion process at the same time there are two relatively independent reaction process, namely, the anodic reaction and cathodic reaction, accompanied by the generation of electric current in the reaction process. Corrosion of metals in acids, alkalis and salts are all electrochemical corrosion.

According to the electrochemical definition, the electrode with the lower electrode potential is called the negative electrode and the electrode with the higher electrode potential is called the positive electrode. The electrode at which the oxidation reaction occurs is called the anode and the electrode at which the reduction reaction occurs is called the cathode. Electrochemically the two electrodes of a battery are named by cathode and anode.

Metal electrochemical etching has photographic graphic transfer chemical etching, silkscreen graphic transfer chemical etching, laser scribing graphic transfer chemical etching. The special photographic chemical etching method, with its extremely high dimensional processing accuracy, is achieved by the combination of a very shallow corrosion depth and an extremely fine photosensitive anti-corrosion layer.

Metal electrochemical etching processing through plate exposure, after developing, to be etched area of the protective film removed, in the etching so that the metal in contact with the chemical solution, the use of two positive graphics through the chemical flooding from both sides of the grinding to achieve the role of dissolution corrosion, the formation of concave and convex or hollow molding effect. Chemical etching is very specific, is specialized in controlled corrosion, is the metal through the chemical method for a controlled processing method.