Zinc oxide-alumina-silica-based crystallized glass
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United States of America Patent
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Jan 30, 2007
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app pub date -
Jun 13, 2005
filing date -
Sep 19, 2003
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Abstract
A zinc oxide-alumina-silica-based crystallized glass is provided, containing zinc oxide, alumina and silica as main components, and zirconia as a nucleating agent. The main components are provided in a ratio of 20 30% by mass of zinc oxide, 15 25% by mass of alumina and 50 60% by mass of silica to amount to 100% by mass in total. The nucleating agent is contained in an amount of 3 6 parts by mass based on 100 parts by mass of the main components. The crystallized glass also includes at least one modification component selected from the group consisting of lithium oxide, sodium oxide, potassium oxide, diphosphorus pentoxide, niobium oxide and tantalum oxide in addition to the main components and the nucleating agent.
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