The research progress on corrosion and protection of silver layer

Abstract

In this paper, the mechanism and reason of silver corrosion and discoloration are discussed. The analysis and characterization of silver corrosion layer and the cleaning method of the discoloration part of silver are described. There are two methods for silver anti-corrosion and anti-tarnish. One is to develop anti-discoloration silver alloy. The other is to treat silver layer surface, which includes: surface plating, surface passivation, surface coating (Resin Coating, RC; Plasmapolymer Coating, PC; Organic Adsorption Complex Membrane, OACM; Supramolecular Self-Assembly, SSA), and surface deposition (Megnetron Sputtering, MS; Plasma Beam Sputtering, PBS; Chemical Vapor Deposition, CVD; Atomic Layer Deposition, ALD). It has great potential for SSA and ALD technologies to be applied in the silver corrosion protection. Furthermore, the technological requirements of silver anti-corrosion are listed and the need for silver anti-corrosion to be comprehensively controlled from all aspects is also proposed.