Many friends like sterling silver jewelry. After wearing silver jewelry for a while, some small spots will appear, which will spread into pieces for a long time, and even become black. Let ’s understand the silver decoration with the editor ...
The reason why silver becomes black
Many friends like sterling silver jewelry. After wearing silver jewelry for a while, there will be some tiny spots. It will spread into pieces for a long time and even become black.
The chemical properties are more lively, and it is easy to react with chemicals such as sulfur -containing elements, and produce sulfur and silver compounds.After a long time, this compound will slowly form a layer of black sulfide film on the surface of the silver jewelry, which starts to show some small spots, and then gradually spread into a film."Mold" affects the surface color and luster of silver jewelry.
What are the causes of silver ornaments? It is well known that the human sweat contains sulfur and ammonia and other compounds, and some air will also contain substances such as hydrogen sulfide, nitric oxide, etc. These will cause the surface of the silver jewelry to be oxidized, and then the color will lose its luster.
The oxidation process of the silver jewelry is unavoidable, but some silver jewelry often contacts the skin or rub it with the skin when wearing. In this case, not only will it not turn black, but sometimes it will become more shiny."If the style of the silver jewelry is complicated and the surface is carved, the seam part is more likely to be oxidized. The first one is usually in these places. The shape is simple and the oxidation will be better."
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