Factors affecting the quality of FPC electroplating
Author: FPCissuing time:2018-06-23 09:55:57Pageviews:1562【smallinBig】
Knowledge of electroplating solution affecting the quality of FPC electroplating
Text labels:FPC
The factors affecting the quality of FPC plating are pH, additives, current density, current waveform, temperature, stirring speed and so on. Electroplating can be plated with different metals, zinc plated, nickel plated, chrome plated, etc.
The material that can promote anode activation in the bath is anodic activator. The role of the anode activator is to increase the current density of the anode starting passivation, so as to ensure that the anode is activated and can be dissolved normally. The anodic dissolution is not normal when the content of anodic activator is not enough, and the content of the main salt decreases rapidly, which affects the stability of the bath. In serious case, FPC electroplating can not be carried out normally.
Additives are substances that do not significantly change the conductivity of the coating but can remarkably improve the properties of the coating. According to the role played in the plating bath, additives can be divided into: brightening agent, leveling agent, and mist inhibitor.
Buffer is a substance used to stabilize the pH of solution. Such substances are generally composed of weak acid or weak acid salt or weak alkali and weak alkali salts. When the solution meets alkali or acid, the pH value of the solution decreases.
In some cases, if the metal ions of the main salt in the bath are simple ions, the coating grain is coarse. Therefore, the complex ion plating solution should be used. The method of obtaining complex ions is to add complexing agents, that is, the complex metal compounds that can match the main salts. The complex is a "molecular compound" formed by the interaction of simple compounds. In the plating bath containing complex compounds, the relative content of the main salt and complexing agent is the main content affecting the electroplating effect, that is, the free quantity of complexing agent, not the absolute content.
2018-06-23
1562People browsing
Back
E-mail：