How do temperature and current density affect the quality of the coating when we use the acid bright copper plating process for production?
About Temperature
In the acid bright copper plating process, the factors that determine the operating temperature of the plating solution are mainly the process parameters of the acid copper brightener.
For example, Bigely acid copper brightener Cu-510, its process temperature needs to be controlled in the range of 20-30 ℃, depending on the climatic characteristics of different regions, need to be equipped with heating or cooling facilities and temperature control devices.
When the temperature in the bath is too high, then it will lead to the consumption of brightener is relatively large, on the other hand, brightener decomposition of organic impurities will affect the appearance of the plated layer; when the temperature in the bath is too low, then it will lead to the copper sulfate crystals are easy to precipitate, and it is, we can use the cathode current density will be relatively low.
About Current Density
To improve the productivity of acid bright copper plating, we can use a relatively high current density. So what are the factors that affect the current density? In fact, there are still quite a lot, such as the following three:
①Stirring method
②Plating solution temperature
③Plating solution formulation and main salt concentration
However, as we have discussed in previous articles, the permissible current density range given by the plating solution is in fact the condition for obtaining a qualified coating. If the current density of the acid bright copper plating process is at too high or too low a level, then it will cause malfunctions.
When the current density is too high, on the one hand, it will cause the plating layer to burn, on the other hand, it is also easy to appear the phenomenon of anode passivation; when the current density is too low in the state, the corresponding brightness of the plating layer will deteriorate, but also reduce the deposition speed, affecting the production efficiency of electroplating enterprises.
Therefore, when using Bigely acid copper brightener, we recommend that the current density be controlled at 4A/dm2, so that the resulting product has good plating alignment and good leveling.
If you have any demands for acid copper brightener, please feel free to contact us.
