| 摘要 |
PROBLEM TO BE SOLVED: To provide a bismuth-based lead-free glass composition which functions as a crystalline glass despite a non-crystalline material by adding a suitable fireproof filler. SOLUTION: This bismuth-based lead-free glass composition contains, by mol, 40-50% Bi<SB>2</SB>O<SB>3</SB>, 15-25% B<SB>2</SB>O<SB>3</SB>, 20-35% ZnO, 0.5-10% (BaO+SrO+MgO+CaO), 0-10% CuO, 0-5% Fe<SB>2</SB>O<SB>3</SB>, 0-5% (SiO<SB>2</SB>+Al<SB>2</SB>O<SB>3</SB>), 0-5% WO<SB>3</SB>, 0-5% Sb<SB>2</SB>O<SB>3</SB>and 0-5% (In<SB>2</SB>O<SB>3</SB>+Ga<SB>2</SB>O<SB>3</SB>). COPYRIGHT: (C)2007,JPO&INPIT
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