High strength glass-ceramics having petalite and lithium silicate structures
In embodiments, a precursor glass comprising from about 55 wt. % to about 80 wt. % SiO 2 ; from about 5 wt. % to about 20 wt. % Al 2 O 3 ; from about 5 wt. % to about 20 wt. % Li 2 O; from about 2 wt. % to about 4 wt. % P 2 O 5 ; and from about 0.2 wt. % to about 15 wt. % ZrO 2 .
1. A precursor glass comprising:
from about 55 wt. % to about 80 wt. % SiO 2 ;
greater than 6 wt. % to 9 wt. % Al 2 O 3 ;
greater than 10 wt. % to 14 wt. % Li 2 O;
greater than 0 wt. % to 1 wt. % of Na 2 O+K 2 O;
from about 2 wt. % to about 4 wt. % P 2 O 5 ; and
from about 0.2 wt. % to about 15 wt. % ZrO 2 .
2. The precursor glass of claim 1 comprising from about 70 wt. % to about 80 wt. % SiO 2 .
3. The precursor glass of claim 1 comprising greater than 10 wt. % to about 12 wt. % Li 2 O.
4. The precursor glass of claim 1 comprising from about 0.5 wt. % to about 8 wt. % ZrO 2 .
5. The precursor glass of claim 1 , wherein ZrO 2 (wt. %)+P 2 O 5 (wt. %) is greater than 3.
6. The precursor glass of claim 1 comprising a thickness of from about 0.8 mm to about 10 mm.
7. A precursor glass comprising:
from about 55 wt. % to about 80 wt. % SiO 2 ;
greater than 6 wt. % to 9 wt. % Al 2 O 3 ;
greater than 10 wt. % to 14 wt. % Li 2 O;
greater than 0 wt. % to 1 wt. % of Na 2 O+K 2 O;
a non-zero amount of P 2 O 5 less than or equal to 4 wt. %; and
ZrO 2 , wherein:
ZrO 2 (wt. %)+P 2 O 5 (wt. %) is greater than 5.
8. The precursor glass of claim 7 comprising from about 70 wt. % to about 80 wt. % SiO 2 .
9. The precursor glass of claim 7 comprising greater than 10 wt. % to about 12 wt. % Li 2 O.
10. The precursor glass of claim 7 comprising from about 0.2 wt. % to about 15 wt. % ZrO 2 .
11. The precursor glass of claim 7 comprising from about 0.5 wt. % to about 8 wt. % ZrO 2 .
12. The precursor glass of claim 7 comprising a thickness of from about 0.8 mm to about 10 mm.
13. The precursor glass of claim 7 comprising greater than 0 wt. % Na 2 O.
14. A precursor glass comprising:
from about 55 wt. % to about 80 wt. % SiO 2 ;
6 wt. % to 9 wt. % Al 2 O 3 ;
greater than 10 wt. % to 14 wt. % Li 2 O;
greater than 0 wt. % to about 1 wt. % of Na 2 O+K 2 O;
a non-zero amount of P 2 O 5 less than or equal to 4 wt. %; and
from about 0.2 wt. % to about 15 wt. % ZrO 2 .
15. The precursor glass of 14 comprising from about 70 wt. % to about 80 wt. % SiO 2 .
16. The precursor glass of claim 14 comprising greater than 10 wt. % to 12 wt. % Li 2 O.
17. The precursor glass of claim 14 comprising from about 0.5 wt. % to about 8 wt. % ZrO 2 .
18. The precursor glass of claim 14 comprising a thickness of from about 0.8 mm to about 10 mm.
19. A precursor glass comprising:
from about 55 wt. % to about 80 wt. % SiO 2 ;
6 wt. % to 9 wt. % Al 2 O 3 ;
greater than 10 wt. % to 14 wt. % Li 2 O;
greater than 0 wt. % to 1 wt. % of Na 2 O+K 2 O;
a non-zero amount of P 2 O 5 less than or equal to 6 wt. %; and
from about 3 wt. % to less than 8 wt. % ZrO 2 .
20. The precursor glass of 19 comprising from about 70 wt. % to about 80 wt.% SiO 2 .
21. The precursor glass of 19 comprising greater than 10 wt. % to about 12 wt. % Li 2 O.
22. The precursor glass of 19 comprising from about 4 wt. % to about 8 wt. % ZrO 2 .
23. The precursor glass of 19 comprising from about 1 wt. % to about 4 wt. % P 2 O 5 .
24. The precursor glass of 19 comprising a thickness of from about 0.8 mm to about 10 mm.
25. The precursor glass of claim 1 comprising greater than 0 wt. % Na 2 O.
26. The precursor glass of claim 19 comprising greater than 0 wt. % Na 2 O.