LOW-MELTING GLASS COMPOSITION Russian patent published in 2019 - IPC C03C8/24 C03C3/62 

FIELD: chemistry.

SUBSTANCE: invention relates to low-melting glass-crystalline composite materials for vacuum-tight low-temperature soldering of corundum ceramics. Low-melting glass composition consists of low-melting glass in amount of 80–87 wt. % and β-equrictite in amount of 13–20 wt. %. Glass contains the following components, mol%: P₂O₅ 45–55, SnO 15–25, Li₂O 5–10, Na₂O 5–10, K₂O 5–10, Al₂O₃ 2–5, SiO₂ 1–3, SrO 0.5–2.

EFFECT: technical result consists in reduction of soldering temperature while maintaining optimum values of chemical resistance of glass compositions.

1 cl, 3 tbl