The application of rare earth in zinc and zinc-based alloy

Trace amounts of rare earth to join the bath allows coating a fine grain size, uniform, dense, thereby improving the corrosion resistance of the galvanized layer. In the zinc-nickel alloy plating, adding a small amount (less than 1.0 g / L), cerium sulfate can increase the current efficiency of the bath, the nickel content in the coating increased, cerium also help to improve the cathodic polarization of the zinc-nickel alloy the value of cerium-containing coating with excellent corrosion resistance in high temperature and high pressure salt water. Measured rare earth in the application of nickel-plated aluminum alloy matrix, thermal shock enhance the role of the substrate and the coating bond strength.

Availability of 40% (mass) of nickel cobalt in the sulfate system. Cobalt alloy plating, the co-deposition process is "abnormal co-deposition. In the basic bath, adding a small amount of rare earth compounds, rare earth compounds in the adsorption characteristics of the cathode surface, reducing the cathodic polarization of the alloy electrodeposition process. KOH solution alloy as the electrolytic cathode at high current density district of hydrogen evolution super-power potential, compared with the Fe electrode, of Ni-Co electrode's had potential to reduce approximately 200mV while of Ni, Co. (RE) electrodes reduce 250mV or so, shows the high catalytic activity for hydrogen evolution reaction.

Tags: neodymium magnets The application,rare earth,zinc,zinc-based,alloy Smco magnets