Influence of current density on plating quality during the application of pyrophosphate copper brightener

Influence of current density on plating quality during the application of pyrophosphate copper brightener

Tue Nov 26 15:57:44 CST 2024

When using pyrophosphate copper brightener, the control of current density is one of the key parameters to ensure the quality of the coating. The level of current density will directly affect the morphology, thickness, uniformity and crystallinity of the coating. In this article, we will analyze it in detail.

First, the level of current density directly determines the thickness of the plating layer. Higher current density accelerates the deposition rate of metal ions, resulting in a thicker plating layer in the same time. However, too high a current density may also lead to roughness, burning or even cracking on the surface of the plated layer, because too high a current density will increase the internal stress of the plated layer, making it difficult to withstand and cracking. On the contrary, if the current density is too low, the thickness of the plated layer will be insufficient to meet the requirements of use.

Secondly, current density also has an effect on the uniformity of the plated layer. Uniform distribution of current density on the surface of the workpiece is critical to obtaining a uniform plated layer. If the current density is not evenly distributed, it will lead to inconsistent thickness of the plated layer on the surface of the workpiece, affecting the overall quality and appearance of the plated layer. Therefore, in the electroplating process using burnt copper brightener, measures need to be taken to ensure the uniform distribution of current density on the surface of the workpiece, such as optimizing the design of the hangers and adjusting the position of the workpiece in the electroplating tank.

For pyrophosphate copper plating, Bigely pyrophosphate copper brightener Cu-203 is recommended. this brightener produces bright, flat copper deposits and is particularly suitable for decorative plating. It has good smoothing properties, produces good glossy coatings, and has a slightly alkaline bath with good deep plating capability, which makes it particularly suitable for zinc die castings with complex shapes. In addition, Cu-203's high current efficiency allows it to operate at high current densities, speeding up plating speeds and thus improving productivity while ensuring the quality of the plated layer.

In summary, the control of current density in the pyrophosphate copper plating process has an important influence on the quality of the coating. By reasonably adjusting the current density, the plating layer with moderate thickness, good uniformity and high crystallinity can be obtained. At the same time, the use of Bigely pyrophosphate copper brightener Cu-203 can further improve the quality of the plated layer and meet various decorative and functional requirements.

Why can you trust Bigely?

Guangdong Bigely Technology Co., Ltd. ,founded in 2003, is a high-tech enterprise integrating R & D,production, sales and service, specializing in the production of electroplating chemicals. As a fast growing electroplating chemicals supplier in China, Bigely Technology is a national high-tech enterprise with a strong research and development team, which has over 10 engineers with more than 20 years' working experience in the electroplating industry. 

Bigely Technology has a strong technical service force, a number of engineers have more than 20 years of experience in the electroplating industry, can provide customers with the following services.

Pre-sales: According to the customers’ planned plating type and the scale of the future development of plating lines, to provide relevant ancillary services.

In-sales: Sampling analysis, training of on-line and laboratory personnel, testing of each process. 

After-sales: SOP development and troubleshooting countermeasures for the whole line, and other customer requirements.

If you need our high-quality electroplating chemicals, please contact us. We can provide you samples to you for test, and also provide a series of services.