Transparent combeite glass-ceramics
AssigneeCorning Incorporated
InventorsQiang Fu, Mitchell Bruce Haller, Martha Rose Jesuit, Adam Thomas Shearer, Liying Zhang
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Abstract
A silicate-based composition includes, in mol. %: 35-65% SiO2, 20-40% CaO, 10-30% Na2O, 0-15% TiO2, >0-15% Al2O3, 0-10% P2O5, 0-15% ZrO2, and 0-3% SnO2. A method of forming a silicate-based composition includes ceramming a silicate-based composition such that the ceramming is a cycle has a first portion and a second portion, with the first portion conducted at a first temperature for a first time and the second portion conducted at a second temperature for a second time.
Claims26
A cerammed silicate-based composition, comprising, in mol. %:
- 35-65% SiO2,
- 20-40% CaO,
- 10-30% Na2O,
- >0-15% TiO2,
- >0-15% Al2O3,
- 0-10% P2O5,
- 0-15% ZrO2, and
- 0-3% SnO2,
- wherein the cerammed silicate-based composition has at least one of:
- fracture toughness ranging from 0.9-2.5 MPa·m0.5,
- Young's modulus ranging from 90-200 GPa, or
- transparency exceeding 70%.
A cerammed silicate-based composition, comprising, in mol. %:
- 35-65% SiO2,
- 20-40% CaO,
- 10-30% Na2O,
- >0-15% TiO2,
- >0-15% Al2O3,
- 0-10% P2O5,
- 0-15% ZrO2, and
- 0-3% SnO2,
- wherein the cerammed silicate-based composition comprises a major combeite crystallite phase.
A cerammed silicate-based composition, comprising, in mol. %:
- 35-65% SiO2,
- 20-40% CaO,
- 10-30% Na2O,
- >0-15% TiO2,
- >0-15% Al2O3,
- 0-10% P2O5,
- 0-15% ZrO2, and
- 0-3% SnO2,
- wherein the cerammed silicate-based composition comprises at least one minor phase including carnegieite, albite, nepheline, or combinations thereof.
Dependencies are inferred from the claim text.