Influences of alkali oxides on crystallization and dielectric properties of anorthite-based low temperature dielectrics
Influences of alkali oxides on crystallization and dielectric properties of anorthite-based low temperature dielectrics
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DOI：
10.2109/jcersj2.116.825
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发表时间：
2008-07-01
影响因子：
1.1
通讯作者：
Chung, Kyung Won
中科院分区：
文献类型：
--
作者：
Cho, Yong Soo;Jo, Yeon Hwa;Chung, Kyung Won
研究了碱金属氧化物作为玻璃成分对生产 LTCC（低温共烧陶瓷）材料的物理和介电参数变化的影响。 LTCC 材料基于典型的钙锌铝硼硅酸盐玻璃，含有 1-3.5 mol% 碱金属氧化物，如 K2O、Na2O 和 Li2O。所有样品均在相同的实验条件下制备，即玻璃/填料的比例和 850 摄氏度的最终烧制温度。致密化和结晶行为很大程度上取决于所用碱金属氧化物的类型和数量。例如，通过增加Na2O和K2O的含量，DTA曲线中的结晶峰倾向于向较低温度区域移动。具体而言，Li2O 在确定 LTCC 系统的结晶行为和随后的介电性能方面具有明显的影响。介电常数测得值为 7.18-7.78，但介电损耗显着降低，特别是添加 3 mol% Li2O 后。 (C) 2008 日本陶瓷学会。版权所有。
The influences of alkali oxides as glass constituents for producing LTCC (Low Temperature Co-fired Ceramics) materials were investigated in terms of variations in physical and dielectric parameters. The LTCC materials were based on typical calcium zinc aluminoborosilicate glasses containing 1-3.5 mol % alkali oxides such as K2O, Na2O and Li2O. All samples were prepared in the same experimental condition, i.e., the ratio of glass/filler and the final firing temperature of 850 degrees C. Densification and crystallization behavior strongly depended on the type and amount of alkali oxides used. For example, crystallization peaks in the DTA curves tended to shift towards the lower temperature region by increasing the content of Na2O and K2O. Specifically, the effect of Li2O was distinct in determining the crystallization behavior and subsequent dielectric properties of the LTCC system. Dielectric constant was measured as values of 7.18-7.78 but dielectric loss was significantly degraded specifically with the addition of 3 mol% Li2O. (C) 2008 The Ceramic Society of Japan. All rights reserved.