GLASS FOR GLASS CERAMIC MATERIAL Russian patent published in 1995 - IPC

Abstract RU 2033397 C1

FIELD: building and architecture. SUBSTANCE: glass for glass ceramic material has, wt.-%: SiO2 35-57; TiO2 0.01-20; Al2O3 0.01-15; Fe2O3 0.01-15.13; FeO 0.01-3.66; CaO 12.02-27.05; MgO 5-20; Na2O 0.14-10; K2O 0.01-4.45; ZrO2 0.01-6, and at least one component from the group: MnO 0.01-4.65; Cr2O3 0.01-1; CoO 10.01-0.5 and at least one component from the group: Li2O 0.01-3.35; P2O5 0.01-1.11. Glass is melted at 1350-1375 C. Shaped articles were subjected for thermal treatment at 750-800 C for 0.5-7 h to provide crystallization process of surface glass layer and relief figure formation. By chemical stability articles belong to the first hydrolytic class, their thermal stability is 600-850 C, strength is 60-100 kg/mm2. EFFECT: enhanced quality of glass. 2 tbl

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RU 2 033 397 C1

Authors

Nazimova Evgenija Konstantinovna

Predovskij Aleksandr Aleksandrovich

Dates

1995-04-20Published

1991-06-05Filed