【Daily Science Knowledge】Electroplating
Release time:
2026-07-04
After depositing a layer of metal or alloy on the surface of diamond, according to the requirements, another layer of metal material can be electroplated on the outer layer of the coating. Electroplating is the process of depositing a layer of metal or alloy on the surface of the already coated metal layer of diamond through the redox reaction under the action of an electric current. Copper (Cu), nickel (Ni), nickel-cobalt (Ni-Co), etc. can be electroplated.
If the coating is a chemical coating, electroplating is merely a process of thickening the coating. The bonding strength between the coating and diamond still does not significantly increase. Generally, this chemical plating - electroplating method is used to plate Cu and Ni for the manufacturing of resin diamond tools; if the coating is a metallurgical bonding coating formed by methods such as vacuum microevaporation, and then an additional layer of metal is electroplated, it is to enhance the infiltration of the coating with the metal binder matrix or to facilitate the direct brazing of the diamond. For example, diamond is first vacuum microevaporated with Ti and then electroplated with Ni.
