Post-Processing

Electroless nickel plating is a process of reaction in a nickel-phosphorus alloy deposits on a metal surface, which uses a pure chemical reaction to induce nickel plated without electricity. Although this process is much longer than electroplating, the advantages are a more uniform thickness (since there is no need to rely on a changing electric field), and better wear and corrosion resistance even on the most complex surfaces sex.

Nickel plating is the process of electroplating a thin layer of nickel on metal parts. This coating can be used for corrosion and wear resistance and also for decorative purposes. When the parts are cleaned, they are immediately submerged in the electrolyte. The nickel anode is then dissolved into the solution and deposited on the part that acts as the cathode in the reaction.

Anodizing is an electrolytic passivation process that creates a natural oxide layer on aluminum parts to prevent wear and corrosion, and to make the part aesthetically pleasing. It is a conversion coating, which means that the surface of the aluminum shrinks in size before the protective oxide layer builds up. When this process is complete, the oxide layer is underneath the intact aluminum sheet, which means it won’t peel or peel.

The mechanism of passivation can be explained by thin film theory, that is, passivation is considered to be due to the action of metal and oxidizing substances, and a very thin, dense, well-covered, and firmly adsorbed metal surface is formed on the metal surface during the action. passivation film. This film exists as a separate phase, usually a compound of metal oxides. It has the function of completely separating the metal from the corrosive medium, preventing the metal from contacting the corrosive medium, so that the metal basically stops dissolving and forms a passive state to achieve the effect of anti-corrosion.