GLAZE Russian patent published in 1998 - IPC

FIELD: production of articles for decorative and household purposes. SUBSTANCE: glaze comprises, mas.%: silicium oxide having essential formula SiO₂, 51.41-54.06; aluminium oxide having essential formula Al₂O₃,, 8.56-12.58; boron oxide having essential formula B₂O₃, 14.77-16.22; calcium oxide having essential formula CaO, 6.03-16.65; magnesium oxide having essential formula Mg O, 0.06-0.10; sodium oxide having essential formula Na₂O, 3.43-8.37; potassium oxide having essential formula Fe₂O₃, 2.08-2.96; iron oxide having essential formula TiO₂, 0.83-1.50; titanium oxide having essential formula FeO, 0.20-0.41; iron oxide having essential formula "БФ" FeO, 0.23-0.33; phosphorous oxide having essential formula P₂O₅, 0.23-0.47; vanadium oxide having essential formula V₂O₅, 0.21-0.45. Spreadability of glaze is 245-295 mm, its heat resistance is 520-690 C, coefficient of linear thermic expansion being (60.43-74.70) •10^-7deg^-1. EFFECT: improved quality of product. 2 tbl