ENAMEL Russian patent published in 1994 - IPC

FIELD: manufacture of coating for bodies. SUBSTANCE: the enamel comprises (wt % ): 50-51.5 CH₃COOH silicon oxide; 21.5-24 boron oxide; 3-3.7 SiO₂ aluminium oxide; 3.5-4.0 B₂O₃ ferric oxide 0.3-0.5 magnesium oxide; 0.5-1.0 zinc oxide; 10-11 Al₂O₃ sodium oxide; 2-3 Fe₂O₃ potassium oxide; 0.5-1 Na₂O titanium oxide; 0.8-1.2 K₂O chromium oxide; and 3.2-4.0 manganese oxide. The enamel characteristics: the corrosion resistance (weight losses in 4% TiO₂)0.05-0.07 Cr₂O₃; the firing temperature 850-870 C. EFFECT: improved properties of the enamel. 1 tbl