07-11-2013 дата публикации
Номер: US20130295523A1
Принадлежит:
The invention relates to glass ceramics based on the lithium metasilicate system (LiO SiO(LiSiO)), which are mechanically processible in a simple manner in an intermediate stage of the crystallization and, after complete crystallization, represent a high- strength, highly translucent and chemically stable glass ceramic. 115-. (canceled)16. A lithium silicate glass or glass ceramic having the following composition:{'sub': '2', '50 to 70 wt-% SiO,'}{'sub': '2', '15 to 22 wt-% LiO,'}{'sub': 2', '2, '8 to 20 wt-% of a stabilizer selected from ZrOand/or HfO,'}{'sub': 2', '2, '0.1 to 4 wt-% KO and/or NaO,'}{'sub': 2', '3, '0.1 to 4 wt-% AlO, and'}2 to 8 wt-% additives.17. The glass or glass ceramic of with the following composition:{'sub': '2', '50 to 64 wt-% SiO,'}{'sub': '2', '17 to 20 wt-% LiO,'}{'sub': 2', '2, '8 to 20 wt-% of a stabilizer selected from ZrOand/or HfO,'}{'sub': 2', '2, '1 to 3 wt-% KO and/or NaO,'}{'sub': 2', '3, '1 to 3 wt-% AlO, and'}4 to 6 wt-% additives.18. The glass or glass ceramic of with the following composition:{'sub': '2', '55 to 64 wt-% SiO,'}{'sub': '2', '10 to 20 wt-% LiO,'}{'sub': 2', '2, '8 to 20 wt-% of a stabilizer selected from ZrOand/or HfO,'}{'sub': 2', '2, '0 to 5 wt-% KO and/or NaO,'}{'sub': 2', '3, '0.1 to 5 wt-% AlO, and'}0 to 10 wt-% additives.19. The glass or glass ceramic of with the following composition:{'sub': '2', '50 to 60 wt-% SiO,'}{'sub': '2', '10 to 20 wt-% LiO,'}{'sub': 2', '2, '8 to 20 wt-% of a stabilizer selected from ZrOand/or HfO,'}{'sub': 2', '2, '1 to 5 wt-% KO and/or NaO,'}{'sub': 2', '3, '0.1 to 5 wt-% AlO, and'}0 to 10 wt-% additives.20. The glass or glass ceramic of with the following composition:{'sub': '2', '55 to 64 wt-% SiO,'}{'sub': '2', '10 to 20 wt-% LiO,'}{'sub': 2', '2, '10 to 20 wt-% of a stabilizer selected from ZrOand/or HfO,'}{'sub': 2', '2, '0 to 5 wt-% KO and/or NaO,'}{'sub': 2', '3, '0.1 to 5 wt-% AlO, and'}0 to 10 wt-% additives.21. The glass or glass ceramic of with the following ...
Подробнее