公开(公告)号：US20130324389A1

公开(公告)日：2013-12-05

申请号：US13960461

申请日：2013-08-06

申请人： Asahi Glass Company, Limited

发明人： Tatsuo NAGASHIMA ,  Yuki KONDO ,  Manabu NISHIZAWA ,  Akio KOIKE

IPC分类号： C03C3/091 ,  C03C3/087

CPC分类号： C03C3/091 ,  C03C3/087 ,  C03C3/095

摘要： The present invention relates to a glass composition including, in terms of mol % on the basis of oxides: from 55 to 70% of SiO2, from 5 to 10% of Al2O3, from 0 to 0.5% of B2O3, from 3 to 15% of MgO, from 3 to 15% of CaO, from 2 to 10% of SrO, from 1 to 10% of BaO, from 0 to 3% of ZrO2, from 0 to 1.8% of Na2O, and from 0 to 1% of K2O, provided that MgO+CaO+SrO+BaO is from 20 to 35%, and Na2O+K2O is from 0 to 2%, in which the glass composition has a glass transition temperature of 680° C. or higher, an average thermal expansion coefficient of from 50×10−7 to 70×10−7/° C., and a temperature at which a viscosity is 102 dPa·s of 1,600° C. or lower.

摘要翻译： 本发明涉及一种玻璃组合物，其以氧化物为基准的摩尔％：SiO 2 55-70％，Al 2 O 3 5％-10％，B 2 O 3 0％至5％，3％至15％ 的MgO，3〜15％的CaO，2〜10％的SrO，1〜10％的BaO，0〜3％的ZrO 2，0〜1.8％的Na 2 O，0〜1％ K 2 O，条件是MgO + CaO + SrO + BaO为20〜35％，Na2O + K2O为0〜2％，玻璃化转变温度为680℃以上，平均热 膨胀系数为50×10-7〜70×10-7 /℃，粘度为102dPa·s的温度为1600℃以下。