GLAZE Russian patent published in 2018 - IPC C04B41/87 

FIELD: construction.

SUBSTANCE: invention relates to the technology of silicates, in particular to glaze compounds that can be used for applying to articles made of faience, majolica. Glaze contains the following, wt %: SiO₂ 3.0–4.0; Al₂O₃ 52.5–53.4; K₂O 5.0–6.0; B₂O₃ 7.0–8.5; Cr₂O₃ 15.0–20.0; SnO₂ 4.0–5.0; ZnO 7.0–10.0. Finely dispersed components weighed in the required ratios (residue on sieve No. 008 is not more than 5 %) are mixed. Resulting mixture is sprayed onto the surface of ceramic products in a stream of low-temperature plasma, and a glass-crystalline coating with small structure defects (micropores, gas inclusions) is formed.

EFFECT: technical result is higher heat resistance of coating.

1 cl, 1 tbl