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US 2024/0174552 A1Published application
Lithium aluminosilicate glasses for chemical strengthening
OwnerTimothy Michael Gross, Alexander I. Priven +1inventors
InventorsTimothy Michael Gross, Alexander I. Priven, Jingshi Wu
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Abstract
Glass compositions include one or more of silica (SiO2), alumina (Al2O3), sodium oxide (Na2O), lithium oxide (Li2O), magnesia (MgO), phosphorus oxide (P2O5) and zinc oxide (ZnO) as essential components and may optionally include boron oxide (B2O3), calcium oxide (CaO), K2O (potassium oxide), Alk2O (Alk2O), REmOn (REmOn), TiO2 (titania) and other components.
Claims20
A glass comprising a plurality of components, the glass having a composition of the components comprising:
- greater than or equal to 60.0 mol. % and less than or equal to 70.0 mol. % SiO2,
- greater than or equal to 5.0 mol. % and less than or equal to 20.0 mol. % Al2O3,
- greater than or equal to 1.2 mol. % and less than or equal to 4.0 mol. % MgO,
- greater than or equal to 0.5 mol. % and less than or equal to 10.0 mol. % Li2O,
- greater than or equal to 0.45 mol. % and less than or equal to 6 mol. % P2O5,
- greater than or equal to 0.0 mol. % and less than or equal to 15.0 mol. % Na2O,
- greater than or equal to 0.0 mol. % and less than or equal to 5.0 mol. % B2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 1.0 mol. % ZnO,
- greater than or equal to 0.0 mol. % and less than or equal to 0.5 mol. % K2O,
- less than or equal to 16.0 mol. % Alk2O and
- greater than or equal to 0.0 mol. % and less than or equal to 1.5 mol. % REmOn,
- wherein the glass satisfies the condition:
- 0.85≤Alk2O/Al2O3 [mol. %]≤1.2, and
- wherein:
- chemical formulas mean the content of corresponding components in the glass in mol %,
- Alk2O is a total sum of alkali metal oxides, Li2O+Na2O+K2O+Rb2O+Cs2O, and
- REmOn is a total sum of rare earth metal oxides, La2O3+Y2O3+Gd2O3+Yb2O3+Lu2O3+Ce2O3+Pr2O3+Nd2O3+Sm2O3+Eu2O3+Tb2O3+Dy2O3+Ho2O3+Er2O3+Tm2O3.
14 more elements
A glass comprising a plurality of components, the glass having a composition of the components comprising
- greater than or equal to 58.0 mol. % and less than or equal to 69.9 mol. % SiO2,
- greater than or equal to 3.0 mol. % and less than or equal to 10.0 mol. % Na2O,
- greater than or equal to 3 mol. % and less than or equal to 7.95 mol. % Li2O,
- greater than or equal to 1.0 mol. % and less than or equal to 20.0 mol. % Al2O3,
- greater than or equal to 0.0 mol. % and less than or equal to 4.8 mol. % MgO,
- greater than or equal to 0.0 mol. % and less than or equal to 4.0 mol. % ZnO,
- greater than or equal to 0.0 mol. % and less than or equal to 2.5 mol. % CaO,
- greater than or equal to 0.0 mol. % and less than or equal to 1.0 mol. % TiO2,
- greater than or equal to 0.0 mol. % and less than or equal to 1.0 mol. % ZrO2,
- greater than or equal to 0.0 mol. % and less than or equal to 0.5 mol. % SnO2,
- greater than or equal to 0.0 mol. % and less than or equal to 0.5 mol. % BaO,
- greater than or equal to 0.0 mol. % and less than or equal to 0.5 mol. % K2O,
- greater than or equal to 9.0 mol. % and less than or equal to 17.5 mol. % Alk2O,
- greater than or equal to 0.0 mol. % and less than or equal to 1.5 mol. % REmOn,
- a sum of Li2O+Na2O is greater than or equal to 12.0 mol. % and less than or equal to 17.5 mol. %,
- wherein the glass satisfies the conditions:
- 0.50≤Li2O/Alk2O [mol. %]≤0.55 and
- 0.85≤Alk2O/Al2O3 [mol. %]≤1,
- Pox−(1.5+PRO)<0.000, and
- PRO greater than or equal to −2 and less than or equal to 2
- wherein
- PRO is a value of RO balance parameter, calculated from the glass composition in terms of mol. % of the components according to the following formula:
- PRO=(MgO+CaO+ZnO)−(B2O3+P2O5),
- Pox is a value of oxygen balance parameter, calculated from the glass composition in terms of mol. % of the components according to the following formula:
- Pox=(Alk2O+RO)−(Al2O3+P2O5),
- chemical formulas mean the content of corresponding components in the glass in mol %,
- Alk2O is a total sum of alkali metal oxides, Li2O+Na2O+K2O Rb2O+Cs2O, and
- REmOn is a total sum of rare earth metal oxides, La2O3+Y2O3+Gd2O3+Yb2O3+Lu2O3+Ce2O3+Pr2O3+Nd2O3+Sm2O3+Eu2O3+Tb2O3+Dy2O3+Ho2O3+Er2O3+Tm2O3, and
- RO is the total sum of MgO+CaO+SrO+BaO+ZnO.
26 more elements
Dependencies are inferred from the claim text.