Abstract

Basically, a traditional ceramic glaze is a thin layer of glass created on the ceramic surface to enhance the aesthetic appearance and also to waterproof the artifact. Almost all glazes are based on quartz, SiO2, and a flux such as Na2O or K2O, similar to the composition of common glass, which contains approximately 72% SiO2 and 15% Na2O, and is widely used as windows or in glass packaging. The current work investigated the formulation of glazes using recycled waste glass powder for firing temperatures of 1100 and 1250°C. Three transparent base glaze formulations were developed and by adding coloring agents such as iron, cobalt or copper oxide several colored glazes could be successfully produced. In this way, up to 30% of recycled waste glass powder could be incorporated into the glazes.

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