| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide glass (especially, glass plate) having a sufficiently high strain point, a thermal expansion coefficient matching with that of a peripheral member, and low viscosity at high-temperatures. <P>SOLUTION: This glass contains as a glass composition, in terms of mass, 45-55% SiO<SB POS="POST">2</SB>(excluding 55%), >10.0-15% Al<SB POS="POST">2</SB>O<SB POS="POST">3</SB>, 0-15% B<SB POS="POST">2</SB>O<SB POS="POST">3</SB>, 0-<3.7% MgO, >2.9-8% CaO, >4.0-15% SrO, >2.0-<14% BaO (excluding 14.0%), 0-10% Li<SB POS="POST">2</SB>O, >4.0-15% Na<SB POS="POST">2</SB>O, 0-10% K<SB POS="POST">2</SB>O, 0-7% ZrO<SB POS="POST">2</SB>, and 0.01-1% Fe<SB POS="POST">2</SB>O<SB POS="POST">3</SB>. <P>COPYRIGHT: (C)2013,JPO&INPIT |
