GLASS-CERAMIC MATERIAL BASED ON LITHIUM DISILICATE, METHOD FOR ITS PRODUCTION AND APPLICATION

摘要

1. Glass-ceramic material based on lithium disilicate, having the following composition: from 55 to 70 wt.% SiO, from 10 to 15 wt.% LiO, from 10 to 20 wt.% Of a stabilizer selected from the group consisting of ZrO, HfO or their mixtures, from 0.1 to 5 wt.% KO, from 0.1 to 5 wt.% AlO, from 0 to 10 wt.% additives selected from the group consisting of boron oxide, phosphorus oxide, fluorine, sodium oxide, barium oxide, oxide strontium, magnesium oxide, zinc oxide, calcium oxide, yttrium oxide, titanium oxide, niobium oxide, tantalum oxide, lanthanum oxide and mixtures thereof, as well as from 0 to 10 wt.% dyes. 2. Glass-ceramic material based on lithium disilicate according to claim 1, characterized in that the dyes are glass-coloring oxides and / or pigments. The glass-ceramic material based on lithium disilicate according to claim 2, characterized in that the glass coloring oxides are selected from the group of oxides of iron, titanium, cerium, copper, chromium, cobalt, manganese, selenium, silver, indium, gold, rare earth metals, in particular neodymium, praseodymium, samarium and europium. 4. Glass-ceramic material based on lithium disilicate according to claim 2, characterized in that the pigments are doped spinels. The glass-ceramic material based on lithium disilicate according to claim 1, having the following composition: from 58 to 64 wt.% SiO, from 11 to 13 wt.% LiO, from 10 to 15 wt.% Of a stabilizer selected from the group consisting of ZrO, HfO or mixtures thereof, from 2 to 5 wt.% KO, from 2 to 5 wt.% AlO, from 2 to 5 wt.% PO, as well as from 0 to 5 wt.% Additives selected from the group consisting of boron oxide, oxide phosphorus, fluorine, sodium oxide, barium oxide, strontium oxide, magnesium oxide, zinc oxide, calcium oxide, yttrium oxide, titanium oxide, niobium oxide, tantalum oxide, lanthanum oxide and