| abstract |
(57) [Summary] [PROBLEMS] To provide a means capable of exhibiting an antibacterial effect more efficiently than silver used when giving antibacterial performance to ceramic products using silver. SOLUTION: A silver aqueous solution and a molybdenum aqueous solution are stirred and reacted, and silver molybdate formed through various steps such as filtration, washing, drying, and pulverization is dispersed in a glaze or other suspension to obtain a surface treatment material. . The compounding ratio of silver molybdate is in the range of 0.001 to 1% in terms of metal silver, and the particle size is 20 μm or less, more preferably 5 to 10 μm. Titanium oxide is added to silver molybdate in 10 By adding 50% (preferably 20 to 30%), the antimicrobial performance can be further improved. An ordinary glaze is applied to the surface of a ceramic product such as a tile, and then a glaze containing silver molybdate is applied thereon to form a two-layer glaze layer and then fired. Alternatively, it may be applied directly to the surface of the product base. |