| 6 kinds of 925 silver alloys were prepared by casting copper-based master alloy with tin content of 0%~5%, the fluidity, whiteness, micro-hardness and tensile strength were compared, the microstructure and the corrosion resistance of the 925 silver alloys were observed. The experimental results show that the highest tensile strength of 4% tin addition on the copper-based alloy in 925 silver alloys, the tensile strength increase linearly when added 1%~3% tin. With the increase of tin content in the 925 silver alloys, the micro-hardness, the anti tarnish property of which were elevated, the whiteness and brightness decreased and the chromatic aberration enlarged. Through the observation of microstructure, with tin content increase formed two separated high tin solid solution phase in the interface, the effect of alloy tensile strength, Sn solid solution whiteness and brightness is lower than that of Ag-Cu-Zn solid solution. |
