Calcium Zinc Borosilicate Glass with High Thermal Expansion Coefficient for LTCC Applications
Calcium Zinc Borosilicate Glass with High Thermal Expansion Coefficient for LTCC Applications
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DOI：
10.1111/j.1551-2916.2008.02732.x
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发表时间：
2008-11
影响因子：
3.9
通讯作者：
Jin-Soo Park;Yuri Kim;Hyunho Shin;J. Moon;W. Lim
中科院分区：
文献类型：
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作者：
Jin-Soo Park;Yuri Kim;Hyunho Shin;J. Moon;W. Lim
从实现低温共烧陶瓷高热膨胀的角度出发，设计了钙锌硼硅酸盐玻璃的组成。玻璃的热膨胀系数(CTE)随CaO+ZnO总量的增加而增大，在CaO+MgO总量为70mol%的约束下，当CaO/ZnO的比例达到50/20时，玻璃的热膨胀系数增大，超过此范围则不可能形成玻璃。根据Hormadaly模型的预测和基于Appen常数的简单混合规则，所有的CTE行为都得到了很好的定性关联，而前者是一种更好的定量基础上的玻璃成分设计工具。显影玻璃的介电常数一般在Appen常数预测的范围内。所设计的50CaO·20ZnO·20B2O·10SiO_2玻璃的热膨胀系数为12.8×10~(−)6/K，介电常数为13.5。？>；
Composition of calcium zinc borosilicate glass has been designed from the viewpoint of achieving high thermal expansion for low temperature co-firing ceramic applications. Coefficient of thermal expansion (CTE) of the glass increased with the total percentage of CaO plus ZnO up to 70 mol%, and it also increased with CaO/ZnO ratio up to 50/20 under the constraint of 70 mol% of total CaO plus MgO, beyond which glass forming was impossible. All the CTE behaviors were qualitatively well correlated by the prediction of Hormadaly's model and the simple rule of mixture based on Appen's constant, while the former was shown to be a better tool on a quantitative base for the design of glass composition. Dielectric constant of the developed glass was generally within the range predicted by the Appen's constant. The designed glass, 50CaO·20ZnO·20B2O3·10SiO2, demonstrated CTE of 12.8 × 10−6/K and dielectric constant of 13.5. ?>