The Effect Of The Oxidation-reduction State On Coloring Of Gold Ruby Glass

The glass colored with Au particles is the most beautiful and refined, and the color is fuchsia. This color glass is usually used in processing the high-level craftwork, the exclusive vessel glasses and decorative art glasses.When the glass is melt under high temperature, the gold is dissolved in the fusibility by Au+ions. After cooling the glass is achromatous, but through heat treatment which is the course of showing colors, the glass shows fuchsia. During the heat treatment Au+ions are deoxidize to Au atoms, and the atoms are congregated together to certain number colloid.This paper mainly covers the fundamental and experimental researches of R2O—SnO—ZnO—PbO—B2O3—Sb2O3—SiO2 system glass containing the Au. The method of analyze the oxidation-reduction state in glass by measuring the content of Fe2+and Fe3+is studied in this paper. By means of UV—VIS—IR, SEM, the size and the number of Au colloid which were processed by nucleating were observed and analyzed.The result show that the system can be applied in practice, and get gold ruby glass whose the absorb spectra is at about 520nm and the suitable Au particles can be obtained by controlling the value of Fe2+/Fe3+between 0.0708 and 0.0742.