Preparation Of Metal Powder By Electrolysis

Preparation of metal powder by electrolysis
When the direct current is irradiated on the metal brine solution, the metal ions discharge and precipitate on the cathode, forming a deposit layer that is easy to break into powder. Metal ions generally originate from the dissolution of the same metal anode and migrate from the anode to the cathode under the action of current. The main factors affecting the particle size of the powder are the composition of the electrolyte and the electrolytic conditions (see water electrolysis). Generally, the electrolytic powder is mostly dendritic and of high purity, but this method consumes a lot of electricity and costs. Electrolysis is also widely used. Commonly used in the production of copper, nickel, iron, silver, tin, lead, chromium, manganese and other metal powders; Alloy powder can also be produced under certain conditions. For rare and refractory metals, such as tantalum, niobium, titanium, zirconium, beryllium, thorium and uranium, composite molten salts are usually used as electrolytes (see molten salt electrolysis) to prepare powders.