-based crystallizable glass and crystallized glass, and manufacturing method thereof
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United States of America Patent
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Apr 30, 2013
Grant Date -
May 12, 2011
app pub date -
Oct 25, 2010
filing date -
Nov 6, 2009
priority date (Note) -
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Abstract
The invention provides a crystallizable glass, a crystallized glass, and manufacturing methods thereof. The crystallizable glass can be crystallized in a short period of time, and can maintain its glass shape and its surface condition during a crystallization process. The crystallized glass has good mechanical strength, an adequate thermal expansion coefficient that allows the crystallized glass to be used as a construction material, less content of alkali-metal oxides, and good chemical durability. The MgO—Al2O3—SiO2-based crystallizable glass and crystallized glass contain, by mass percent, 55.0-65.0% SiO2, 8.0-14.0% Al2O3, 10.0-20.0% MgO, 1.5-6.0% CaO, 1.0-2.2% Li2O, 0.7-3.0% Na2O, 2.5-4.0% K2O, and 1.5-3.0% F.
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