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US 2022/0024804 A1Published application
Aluminoborosilicate glass substantially free of alkali oxides
AssigneeCorning Incorporated
InventorsAdam James Ellison, Jason Sanger Frackenpohl, John Christopher Mauro, Douglas Miles Noni, Jr., Natesan Venkataraman
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Abstract
An aluminoborosilicate glass includes alkaline earth oxides and is substantially free of alkali oxides. The glass may be fusion formable and may be useful as a substrate or other article, such as with consumer and commercial electronic devices.
Claims14
A glass comprising:
- 60 mol %≤SiO2≤66 mol %;
- 7 mol %≤Al2O3≤10 mol %;
- 20.87 mol %≤B2O3≤30 mol %;
- SrO, MgO, and CaO each >0 mol %,
- wherein (SrO+MgO+CaO)≤16 mol %;
- and
- wherein the glass comprises less than 1 mol % of alkali metal oxides.
4 more elements
A glass comprising:
- 60 mol %≤SiO2≤66 mol %;
- 7 mol %≤Al2O3≤10 mol %;
- 18 mol %≤B2O3≤30 mol %, wherein a majority of the B2O3 is in threefold coordinated state;
- SrO, MgO, and CaO each >0 mol %,
- wherein 4 mol %≤(SrO+MgO+CaO)≤Al2O3;
- and
- wherein the glass comprises less than 1 mol % of alkali metal oxides.
4 more elements
A glass comprising:
- 60 mol %≤SiO2≤66 mol %;
- 0 mol %≤Al2O3≤10 mol %;
- 20.17 mol %≤B2O3≤30 mol %;
- (Li2O+Na2O+K2O+MgO+CaO+SrO)≤Al2O3;
- and
- wherein the glass comprises less than 1 mol % of alkali metal oxides.
3 more elements
Dependencies are inferred from the claim text.