| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide Li<SB POS="POST">2</SB>O-Al<SB POS="POST">2</SB>O<SB POS="POST">3</SB>-SiO<SB POS="POST">2</SB>-based crystallized glass using SnO<SB POS="POST">2</SB>as an alternative clarifier of As<SB POS="POST">2</SB>O<SB POS="POST">3</SB>or Sb<SB POS="POST">2</SB>O<SB POS="POST">3</SB>, which gives crystallized glass with little yellow coloration due to Fe<SB POS="POST">2</SB>O<SB POS="POST">3</SB>or TiO<SB POS="POST">2</SB>, and has excellent clear feeling. <P>SOLUTION: This Li<SB POS="POST">2</SB>O-Al<SB POS="POST">2</SB>O<SB POS="POST">3</SB>-SiO<SB POS="POST">2</SB>-based crystallized glass contains as composition, by mass, 20% or more Al<SB POS="POST">2</SB>O<SB POS="POST">3</SB>, 2% or more Li<SB POS="POST">2</SB>O, 2.5% or less TiO<SB POS="POST">2</SB>, 0.1-0.5% SnO<SB POS="POST">2</SB>, and 0.02-0.09% Nd<SB POS="POST">2</SB>O<SB POS="POST">3</SB>, and 3.7≤Li<SB POS="POST">2</SB>O+0.741MgO+0.367ZnO≤4.5. <P>COPYRIGHT: (C)2013,JPO&INPIT |
