In the electroplating industry, the whitening of copper plating is a common and complex problem that can be caused by a variety of factors. Let's take a closer look at this phenomenon and its causes, and introduce why the right tin brightener can effectively reduce the failure of white tin plating.
First of all, the abnormal plating solution composition is one of the main reasons for the whitening of the copper plating tin layer. Imbalance in the plating solution of tin salt concentration, the proportion of additives and pH value and other parameters will directly affect the quality of the plating layer. For example, too high a concentration of tin salts may lead to rough crystallization of the plating layer, the phenomenon of whitening; and tin plating additives or tin plating brightener is insufficient, the gloss of the plating layer will be reduced, and is also prone to whitening.
Secondly, improper control of the plating process is also an important factor leading to the whitening of the plated layer. The setting of parameters such as temperature, current density and stirring speed during plating need to be strictly controlled within the range of process requirements. Too high or too low current density will lead to uneven crystallization of the plated layer and whitening phenomenon. This is because at high current density, the deposition of tin ions is too fast to form a uniform and dense coating; while at too low a current density, the deposition of the coating is slow, which may result in a less bright coating.
For the above mentioned problem of whitening of plated layer, it can be performed by using Sn-807, a tin plating brightener from Bigely. The components in this brightener can effectively inhibit the whitening of the plated layer and improve the brightness and uniformity of the plated layer. Its formulation ensures electrolyte stability and avoids side reactions such as cathodic hydrogen precipitation, thus improving the quality of the plated layer. In addition, Sn-807 is able to adapt to a wide range of current density and has a good control effect on the thickness distribution of the plated layer, which meets the needs of electroplating production.
In summary, the phenomenon of whitening of tin plating layer of copper rows is often related to the abnormal composition of plating solution, improper control of plating process, adhesion of pollutants and storage environment problems. The use of Bigely tin plating brightener Sn-807 can effectively reduce the fault of whitening of the tin plating layer, ensure that the plating layer is bright, crystalline and meticulous, to meet the customer's demand for electroplated products.
About us
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 additives. As a famous electroplating additives source manufacturer in China, Bigely has over 20 years' experience in electroplating additives production and own production base of 5000 square meters. We can produce 15,000 tons of electroplating additives every year, which can fully meet the needs of customers.
Our products are widely used to meet the plating needs of different industries and exported to many countries from all over the world. They can meet the environmental protection standard after use, mainly used in automobile parts, sanitary ware, electronic products, hardware, furniture, building accessories and other fields.
If you need our high-quality electroplating additives, please contact us. We can provide you samples to you for test, and also provide a series of services.