Coloration of glass for artistic use and it's application

In this thesis, experiments were made to produce transparent colored glass with the facilities and capabilities of Anadolu University, Department of Glass. In the experiments, glass melting processes were performed in ceramic crucibles, waste soda-lime-silica glass (Glasma 705) have been used as raw material and the metal oxides have been used as the colorant. Some important factors affect colored glass production: The most important of these factors; the composition of glass and coloring materials found in it (usually metal oxides) and the percentage of metal oxides also purity of them. Coloring oxides have been added to the composition between the amounts of 0.1% - 5% wt. By increasing the amount of metal oxide in the composition, it is observed that the color tone is darkened or changed. The thermal expansion of the furnace glass (Glasma 705) and the thermal expansion of the colored commercial glasses (e.g. Bulls Eye) which are used for artistic works sometimes can not be compaitable due to different manufacturers or similar reasons. In these kind of conditions the artists have difficulty in creating glass work freely. This study is aimed to investigate the composition of colored glass and to produce colored glass which is compatible with the furnace glass. Also, the optimization of color tone have been done by adding different amount of metal oxides to glass composition. As a result of the study, the colored glasses produced as a result of experiments were used in the artistic practice part of master thesis and various artistic glass pieces has been obtained. Keywords: Metal oxides, Clear glass, Colored glass, Glass coloring, Coloring with metal oxide.