Present Situation on Research and Applications of the Silver Alloys for Jewelry
The causes of the tarnishing of silver alloys for jewelry were simply analyzed,among which the sulfidation of silver and the oxidation fire scale of copper were considered as the main causes.Meanwhile,the paper introduced the present research situation of several categories of anti-tarnishing silver alloys,including precious metals alloying,rare earth alloying and other active elements alloying.And the main problems encountered by jewelry enterprises in the application of typical anti-tarnishing silver alloys,such as insufficient discoloration resisting property,inadequate hardness,casting flaws and polishing defects were discussed.And the performance assessment methods of anti-tarnishing silver alloys for jewelry were suggested at the end.