Among all the acid electroless nickel plating solutions, which one has better corrosion resistance?
Bigely engineer conducted research on the polarization curves of electroless nickel coatings with different phosphorus contents in a solution of 0.1 molar sulfuric acid and 0.05 molar sodium chloride. It was found that as the phosphorus content increased, the corrosion current showed a downward trend. Also, the relationship between phosphorus content and coating corrosion rate was obtained through immersion method, and it was found that only high-phosphorus electroless nickel coatings exhibited excellent corrosion resistance in acidic medium. If the phosphorus content is insufficient (4.5% P), it will instead promote the active dissolution of Ni, and if this continues for a long time, it will even evolve into catastrophic corrosion.
Therefore, it can be concluded that for electroless nickel plating solutions with high phosphorus content, the resulting coating has relatively good corrosion resistance.
Some electroplating enterprises have reported that after using their own prepared high-phosphorus electroless nickel plating solution, why did the workpieces have the problem of poor corrosion resistance? This is because no mature commercial electroless nickel plating solution was used. The prepared solution can meet certain requirements, but generally there are problems such as poor corrosion resistance of the coating, and it is basically using compounds containing lead and cadmium that do not meet environmental protection requirements.
To solve the problem, electroplating enterprises can use the electroless nickel plating solution Ni-811. This is an environmentally friendly high-phosphorus electroless nickel process developed by Bigely, which has excellent corrosion resistance. Moreover, if the upstream customers have higher requirements for the environmental protection and performance of the electroless nickel plating products, the electroplating enterprises can also meet those demands.
Why choose Bigely Technology?
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.
If you need our high-quality electroplating additives, please contact us. We can provide you samples for test, and also provide a series of services.
