Branch Snyder Department of International Ltd. Shenzhen-Electronic Technology Co., Ltd. - The Department of Electronic Technology Company is a professional custom single-sided, double-sided, 2-40 storey density multilayer professional supplier, to provide customers with high-precision high quality Shenzhen board, quality assurance, reasonable prices. Nickel deposition reaction seen in metal deposition while accompanied by the deposition of elemental phosphorus. Gold-plated circuit board supplier. And with the increase of PH value, the deposition rate of nickel is speeding up, slowing phosphorus precipitation rate, the result is P content of the nickel-phosphorus alloy is reduced. On the contrary, with the lower PH value, P content of the nickel phosphorus gold rises. Guangdong gold-plated circuit boards. Chemical nickel deposit, the phosphorus content is generally between 7 to 11 percent change. Corrosion resistance superior to nickel-phosphorus alloy electroplated nickel, its hardness is also higher than the nickel plating. Chlorine and sodium hydroxide can be used to maintain control of the production of PH value, both in terms of automatic tonic little difference, but in the manual tonic should be of particular concern. When ammonia is added, it can be observed blue ammonia complex of nickel ion appears blue when then diffusion disappeared, indicating ammonia to nickel is good for PH adjusting agent. When adding sodium hydroxide solution, the bath immediately appear white powder precipitated nickel hydroxide precipitation, along with syrup spread, white powder slowly dissolved in the acidic environment of the bath. Gold-plated circuit board manufacturers to. Therefore, when using sodium hydroxide solution is used as a chemical plating PH adjusting agent, formulated concentration can not be too high, dosing should be added slowly. Otherwise it will produce flocculent powder, when not fully completed before the dissolution process, flocculent powder will be deposited nickel bath filter must be clean and only after the re-start production. Which gold-plated circuit board | Newell Year (Advisory) | Guangdong gold-plated circuit board provided by the Department of Shenzhen-Electronic Technology Co., Ltd. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) Guangdong Shenzhen, printed circuit board leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Newell create leadership with the staff warmly welcome all inquiries negotiations to create Newell create a better future.