Silver is belonging to the cathodal plating to the common metals. Silver is a malleable metal which has superior electrical conductivity, thermal conductivity, and weldability. Polished silver plating has preferable reflective and decorative nature; therefore, it can be utilized by reflector, tableware, musical instrument, and jewelry. As a good conductor, silver is broadly applied to instruments and electronic industries to reduce contact resistance between components or enhance weldability of metals. In addition, silver also possesses high chemical stability. Silver is very stable in alkaline solution or organic acid, but easily solution in nitric acid or hot concentrated sulfuric acid. Silver will soon discolour in the halide or sulfide contained air. Thus silver plating is generally processing anti-tarnish treatment to maintain appearance and reflective performance. For sintered Neodymium magnet, there are only zinc plating and nickel plating suitable to be directly deposited on its surface, thereby, silver plated Neodymium magnet generally has an underlying layer of Ni-Cu-Ni. Silver plated Neodymium magnet is typically served in decorative purpose and jewelry.
