| 摘要 |
The invention relates to crystallized glass that can be used with various electronic components such as magnetic heads and the like as bonding or sealing glass. This crystallized glass comprises, in % by weight, at least 11-17% of SiO2, 7-10% of B2O3, 30-55% of PbO, 1-3% of CdO, 5-10% of A2O (A stands for a kind of alkali metal), 7-35% of ZnO and 0-10% of ZrO2 with the sum of ZnO and ZrO2 not exceeding 35%, and has the characteristics of 550 DEG -600 DEG C. as the working temperature, (80-100)x10-7/ DEG C. as the thermal expansion coefficient, 550 DEG C. or more as the thermal expansion coefficient, and 550 DEG C. or more as the glass transition point after working.
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