Patent · US Active

Peraluminous lithium aluminosilicates with high liquidus viscosity

US11136258B2 · kind B2 · utility

3Cited by

14References

17Claims

0Family size

Assignee

CORNING INCORPORATED · US

Inventors

Matthew John Dejneka · Corning, US
Benjamin Zain Hanson · Big Flats, US
Alexander I Priven · Geoado-ri, KR

Key dates

Filing date	Oct 30, 2018
Grant date	Oct 5, 2021
Priority date	—
Expiry date	Mar 19, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG06F2200/1634
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The embodiments described herein relate to glass articles that include mechanically durable glass compositions having high liquidus viscosity. The glass articles may include glass compositions having from 50 mol. % to 80 mol. % SiO2; from 7 mol. % to 25 mol. % Al2O3; from 2 mol. % to about 14 mol. % Li2O; 0.4 mol. % P2O5; and less than or equal to 0.5 mol. % ZrO2. The quantity (Al2O3 (mol. %)−R2O (mol. %)−RO (mol. %)) is greater than zero, where R2O (mol. %) is the sum of the molar amounts of Li2O, Na2O, K2O, Rb2O, and Cs2O in the glass composition and RO (mol. %) is the sum of the molar amounts of BeO, MgO, CaO, SrO, BaO, and ZnO in the glass composition. A molar ratio of (Li2O (mol. %))/(R2O (mol. %)) may be greater or equal to 0.5. In embodiments, the glass composition may include B2O3. The glass compositions are fusion formable and have high damage resistance.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.