STUFFED a-QUARTZ AND GAHNITE GLASS-CERAMIC ARTICLES HAVING IMPROVED MECHANICAL DURABILITY
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United States of America Patent
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Issued Date -
Sep 5, 2024
app pub date -
Feb 29, 2024
filing date -
Mar 2, 2023
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Abstract
A glass-ceramic article includes a crystalline phase comprising stuffed α-quartz and gahnite and a residual glass phase. The glass-ceramic has a composition comprising: greater than or equal to 69.5 mol % and less than or equal to 85 mol % SiO2; greater than or equal to 7 mol % and less than or equal to 20 mol % Al2O3; greater than or equal to 4.5 mol % and less than or equal to 12 mol % ZnO: greater than or equal to 1 mol % and less than or equal to 8 mol % LizO; and greater than or equal to 0.5 mol % and less than or equal to 4 mol % ZrO2.
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