Effects of Ce on microstructure and properties of as-cast

cold working

anti-electrochemical corrosion

anti-tarnishing of sulfuration and anti-oxidation of 925Ag silvers were investigated by means of optical microscopy

hardness testing

potentiadynarnic polarization

SEM （scanning electron microscopy） and color analysis. The results show that with 0.05% Ce addition

compact and fine grain structure in 925Ag alloys can be observed with the proper hardness and the minimum shrinkage porosity （holes）

and the desirable anti-electrochemical corrosion

anti-tarnishing and anti-oxidation performance can be obtained in the alloy. When adding more than 0.075% Ce

the cold working performance and properties of anti-electrochemical corrosion as well as anti-tarnishing are deteriorated as a result of the more occurrence of second phase

grain boundary segregation and the increase of shrinkage porosities.