ANTIBACTERIAL SEMI-FRITTED GLAZES CONTAINING IRON (III) AND MANGANESE (IV) OXIDES

The aim of this research work is production of colored antibacterial glaze coatings for ceramic products containing iron (III) and manganese (IV) oxides. The coatings are produced on the basis of multicalcium aluminoborosilicate frit, dolomite and iron or manganese oxides. The constant components in the raw mixture were feldspar, alumina, coal clay and kaolin. The coatings were obtained by finely grinding the components then applied to the dried semi-finished product and single fired at a temperature of 1200±5 °C for 60±2 minutes. The formation of the glaze layer, the decorative properties of coatings, and their physical and chemical and operational properties were examined. The structural features and phase composition of coatings have been studied. Antibacterial activity of coatings against Escherichia coli ATCC 8739 and Staphylococcus aureus ATCC 6538 test strains was determined.