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通过Ba₃(VO₄)₂和Li₂WO₄之间的反应制造温度稳定的低温联合烧陶

Du-Won Kim¹, Hye-Won Jeong², Kyoung-Ho Lee²

¹Department of Advanced Materials Engineering, Soonchunhyang University, 22, Soonchunhyang-ro, Asan-si 31538, Chungnam, Republic of Korea.

Materials (Basel, Switzerland)

|March 14, 2026

概括

新的无玻璃微波介电复合材料是使用反应性液相烧结方法开发的. 这些材料具有可调节的介电性质,并与用于低温共烧陶应用的银电极具有很好的兼容性.

科学领域:

材料科学材料科学材料科学
陶工程陶工程
固态化学固态化学

背景情况:

低温联合烧焦陶 (LTCC) 技术需要具有优良微波性能和低烧结温度的介电材料.
传统的LTCC介电材料通常含有玻璃相,这可能会限制它们的高频性能和可靠性.
开发无玻璃介电复合材料对于推进LTCC应用至关重要.

研究的目的:

制造新的无玻璃微波介电复合材料,具有量身定制的成分.
研究组合对烧结行为,相位形成和微波介电特性的影响.
评估这些复合材料在LTCC应用中的潜力.

主要方法:

制造Ba₃(VO₄)₂-BaWO₄-Li₃VO₄复合材料通过在850°C的反应性液相烧结.
系统地改变Li₂WO₄含量以控制相位分数.
相对密度的表征,微波介电特性 (εr, Q × f, τf) 和与Ag电极的化学兼容性.

主要成果:

在850°C的低烧结温度下达到较高的相对密度 (≈94-98%).
已证明的共振频率 (τf) 的可调节温度系数从+23.97到-45.48 ppm/°C.
在x = 0.5时获得最佳性能: εr = 9.19,Q × f = 45,900 GHz,tf = -1.15 ppm/°C.
证实没有与Ag电极检测到反应,这表明电极兼容性很好.

结论:

开发的Ba₃(VO₄)₂-BaWO₄-Li₃VO₄复合材料是LTCC有希望的无玻璃介电材料.
反应性液相烧结方法可以有效控制介电性质.
这些材料符合LTCC的关键要求:低燃烧温度,接近零的热漂移和Ag电极兼容性.

关键词:

在Ba3(VO4)2BaWO4Li3VO4复合材料中.2WO4添加剂的使用情况低温联合燃烧陶 (LTCC) 是一种低温联合燃烧陶.微波的介电特性微波的介电性质反应性液相烧结过程中的反应性液相烧结.响应频率的温度系数响应频率的温度系数

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