Ceramic glaze with suitable characteristics can be obtained through selection of frit composition, glaze formulation and suitable application and firing parameters. However, most of time, the influence of factors like additives and firing temperature over glaze properties are unknown. This work presents the experimental design used for glaze application tests and resulting glazed surface characteristics. The influence of glaze formulation and firing temperature parameters over porosity and surface hardness was analyzed. A Taguchi orthogonal array provided support on conducting application tests and on analysis of glaze properties. The properties that were analyzed were: porosity, scratch hardness, Mohs hardness, Vickers hardness and visual characteristics. After this analysis the most suitable parameters for glaze obtaining were selected.
ceramic glaze; Taguchi
