Presentation on theme: "Solid State Chemistry via Glass and Ceramics"— Presentation transcript:
1 Solid State Chemistry via Glass and Ceramics John Tanaka and Edward J. NethChemistry DepartmentUniversity of ConnecticutStorrs, Connecticut 06269
2 Glass, Ceramics and Mankind History Discovered in prehistory by unknown inventorReconstructions of old civilizationsFood and beverage storage
3 Current technology Fiber Optics LC, electroluminescent, and plasma displaysChemistryElectric insulatorsSuperconductorsElectronic componentsHousehold goods
4 Glass GLASS Quartz Coefficient of expansion 8 x 10−7 cm/cm/oC Softening point oC7740 Pyrex80.5% SiO212.9% B2O33.8% Na2O0.4% K2O2.2% Al2O3Coefficient of expansion 33 x 10−7 cm/cm/oCSoftening point 820oCWorking point oCContainer Glass74.1% SiO21.8% Al2O38.8% CaO1.4% MgO13.0% Na2O0.4% K2OCoefficient of expansion 92 x 10−7 cm/cm/oCSoftening point 696 oCWorking point oC
5 Quartz STRUCTURES OF SiO2 Quartz, α and β (to 870oC) Tridymite ( 870oC to 1470oC)Cristobalite (1470oC to 1710oC)
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