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Lithia-alumina-silica containing glass compositions and glasses suitable for chemical tempering and articles made using the chemically tempered glass
Lithia-alumina-silica containing glass compositions and glasses suitable for chemical tempering and articles made using the chemically tempered glass
A glass composition for chemical tempering includes oxides in wt % ranges of: SiO2 60 to 75; Al2O3 18 to 28; Li2O 3 to 9; Na2O 0 to 3; K2O 0 to 0.5; CaO 0 to 3; MgO 0 to 3; ZrO2 0 to 3; where MgO+CaO is 0 to 6 wt %; Al2O3+ZrO2 is 18 to 28 wt %, and Na2O+K2O is 0.05 to 3.00 wt %. The glass has a log 10 viscosity temperature in the temperature range of 1328° F. (720° C.) to 1499° F. (815° C.); a liquidus temperature in the temperature range of 2437° F. (1336° C.) to 2575° F. (1413° C.), and a log 7.6 softening point temperature in the temperature range of 1544° F. (840° C.) to 1724° F. (940° C.). The chemically tempered glass has, among other properties, an abraded modulus of rupture of 72 to 78 KPSI, and a modulus of rupture of 76 to 112 KPSI.
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机译:用于化学钢化的玻璃组合物包含重量百分比范围为SiO 2 Sub> 60至75; Al 2 Sub> O 3 Sub> 18至28; Li 2 Sub> O 3至9; Na 2 Sub> O 0至3; K 2 Sub> O 0至0.5; CaO 0至3; MgO 0至3; ZrO 2 Sub> 0至3;其中MgO + CaO为0至6重量%; Al 2 Sub> O 3 Sub> + ZrO 2 Sub>为18至28 wt%,Na 2 Sub> O + K 2 Sub> O为0.05至3.00重量%。该玻璃的log 10粘度温度为1328°F(720°C)至1499°F(815°C)的温度范围。在2437°F(1336°C)至2575°F(1413°C)的温度范围内的液相线温度,以及在1544°F(840°C)的温度范围内的对数7.6软化点温度。)至1724°F(940°C)。化学钢化玻璃除其他性能外,具有72至78 KPSI的磨破破裂模量和76至112 KPSI的破裂模量。
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