Titanium anode plate in the advantages of electroplating
Precious metal oxide-coated titanium anode is composed of noble metal iridium salt coated on titanium substrate and sintered at high temperature. It is widely used in electroplating (copper, nickel, cobalt, gold, zinc, etc.), electrolysis, rhodium, etc.) and other hydrometallurgical industry.
The preparation and application of the precious metal oxide coated titanium anode has been quite mature and has been more than 40 years old. The advantages of titanium anodes are as follows compared with the traditional application of the platinum electrode in alkaline copper:
1, high current efficiency, excellent corrosion resistance, long life of the anode, can carry high current density (up to 10000A / M2).
2, energy-saving: As we all know, the platinum electrode is a high peroxynitrite potential (1.563V, relative mercuric sulfate) electrode, and the noble metal oxide coating titanium anode is a low oxygen overpotential (1.385V relative mercuric sulfate) Electrode, the oxygen in the anodic oxygen evolution more easily oxygen. Therefore, electrolysis, the tank pressure is relatively low, but also saves energy. This phenomenon has been well demonstrated in copper-plated alkaline copper plating baths.
3, pollution-free: precious metal oxide coating Titanium anode coating is precious metal iridium ceramic oxide, the oxide is a fairly stable oxide, almost insoluble in any acid and alkali, and the oxide coating is only 18 to 40 m, the overall amount of coating oxide less. Therefore, noble metal oxide coated titanium anode does not cause any pollution to the plating solution, which is basically the same as the platinum plated electrode.
4, cost-effective: in order to achieve the same life of the platinum electrode (coating thickness 3.5μm), the price of precious metal oxide coated titanium anode is about 80% of the platinum electrode. The noble metal oxide-coated titanium anode has better electrochemical stability in alkaline electrolytic copper electrolyte and at the same time it has superb electrocatalytic activity and durability. Baoji City Qi Xin Titanium Co., Ltd. of precious metal oxide coating titanium anode and Pt electrode cost analysis, it is clear that the noble metal oxide coating titanium anode economy.
5, Printed Circuit Board industry, the use of copper plating cycle pulse current reverse (PPR), we know that in the sulfuric acid system containing chloride environment, platinum plated titanium anode for some time after the work will be peeling off the platinum layer. However, using a noble metal oxide-coated titanium anode can effectively improve this phenomenon.
6, low maintenance costs: Compared to the traditional soluble electrode (graphite and lead alloy electrode), the precious metal oxide coating titanium anode does not need to stop production often to clean, supplement the anode, or frequent replacement of the anode bag and the anode to re- Plating, so productivity increased, lower labor costs;
7, under the same conditions, the life of noble metal oxide-coated titanium anode depends on the operating current density, temperature and bath composition.
