MICROCRYSTALLINE GLASS, ARTICLE FROM MICROCRYSTALLINE GLASS AND METHOD OF THEIR PRODUCTION Russian patent published in 2024 - IPC C03C10/04 C03B27/03 C03B32/02 C03C1/04 C03C10/02 C03C10/12 C03C10/14 

FIELD: glass industry.

SUBSTANCE: group of inventions relates to microcrystalline glass and an article from microcrystalline glass and to a method of making said glass. Microcrystalline glass article contains the following components in percentage by weight: SiO₂ 55–80%; Al₂O₃—less than 10%; Li₂O 8–25%; ZrO₂ 5–15%; P₂O₅ 1–8%; SiO₂/(P₂O₅+ZrO₂) is 2.5–12.0; (ZrO₂+Li₂O)/Al₂O₃ is 2.0 or more. Method of making an article from microcrystalline glass includes forming matrix glass, forming microcrystalline glass by crystallisation of matrix glass and then forming an article from microcrystalline glass by chemical hardening of microcrystalline glass.

EFFECT: improved mechanical properties of glass and articles made from it.

40 cl, 18 tbl