Optical properties of gold alloy 585 monitored through amplitude diminutions at annealed and cold rolled strips with low deformations

Abstract

The optical properties are determined and presented in an adequate references for common pure noble metals (Au, Ag, Cu, etc.) but not for almost their alloys. This was a reason for investigation of specific optical properties amplitude diminutions at gold alloy of 585 finess, as an often used alloy in jewelry. This alloy for jewel making in practice usually is composed from three - or four metals. The jewels, as their nature need, ordinary must possess pretty high level of brilliance. Variuos metals will produce changes in optical properties of an alloy, indeed. Here are represented some ellipsometric measuring of tg(ψ) for annealed and cold rolled strips from golden alloy 585. Cold rolling is provided by height reduction of 10, 20 and 30%. Typical microstructures at annealed and cold rolled (30%) deformation were shown.

Keywords

• 585 gold alloy
• ellipsometry
• tg(ψ) values
• microstructures of strips