Alloy plating is a process that utilizes the principle of electrolysis to deposit a thin layer of alloy on the surface of certain metals in order to obtain superior material properties.
Author: Anna
The metal plating process mainly consists of the following steps:
Liquid-phase mass transfer step: metal hydration ions (or complex ions) are transferred from the interior of the solution to the cathode surface.
Electrochemical step: metal hydration ions (or complex ions) on the cathode surface to get electrons and reduced to metal atoms.
Electrocrystallization step: The metal atoms arrive at the metal surface and arrange themselves in a certain pattern to form new crystals, i.e., the reaction products form a new phase.
This process involves connecting the positive and negative electrodes of the DC current to the cathode and anode of the trench with wires respectively. When the DC current passes through the two electrodes and the electrolyte containing metal ions between the two electrodes, the anions and cations in the plating solution move regularly due to the electric field. The anion moves to the anode, the cation moves to the cathode, that is, “electromigration” occurs. In this process, metal ions are reduced and deposited as a coating on the cathode, while anodic oxidation transfers the metal to ions.
In addition, alloy plating is a process that utilizes the principle of electrolysis to deposit a thin layer of alloy on the surface of certain metals in order to obtain superior material properties. This process uses electrolysis to make metal or other materials attached to the surface of the parts of a layer of metal film, to prevent metal oxidation (such as corrosion), improve wear resistance, electrical conductivity, reflectivity, corrosion resistance and enhance the role of aesthetics and so on.
The plating process also includes degreasing, roughening, neutralization, catalysis, debinding, electroless nickel, nickel pre-plating, bright copper, semi-bright nickel and other steps, each of which has its own specific physical and chemical significance, which together ensure that the plating quality and results are up to standard.