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发明公开
CN109942195A 一种具有高介电常数低介电损耗的玻璃陶瓷及其制备方法 有权 转让

一种具有高介电常数低介电损耗的玻璃陶瓷及其制备方法
摘要：
本发明公开了一种具有高介电常数低介电损耗的玻璃陶瓷及其制备方法。该玻璃陶瓷的化学成分组成为：xBaO-ySrO-zPbO-wTiO2-vSiO2-tNb2O5，其中的x、y、z、w、v、t表示各成分的摩尔比例，分别为：2.5≤x≤14，14≤y≤20，0≤z≤10，4≤w≤12，16≤v≤22，10≤t≤30。其制备方法是：将上述成分对应的原料按照所述摩尔比例进行配料、混料，在1450℃的高温下保温3个小时形成熔融的玻璃液，然后将玻璃液制成玻璃片，玻璃片经过可控结晶热处理，得到本发明的玻璃陶瓷。本发明的玻璃陶瓷具有高的介电常数、低的介电损耗，适合用作高压电容器介质。
摘要（英）：

The invention discloses glass ceramic with high dielectric constant and low dielectric loss and a preparation method thereof. The chemical ingredient composition of the glass ceramic is xBaO-ySrO-zPbO-wTiO2-vSiO2-tNb2O5, wherein the x, y, z, w, v and t mean the molar ratio of each ingredient, x is more than or equal to 2.5 and less than or equal to 14, y is more than or equal to 14 and less than or equal to 20, z is more than or equal to 0 and less than or equal to 10, w is more than or equal to 4 and less than or equal to 12, v is more than or equal to 16 and less than or equal to 22, and t is more than or equal to 10 and less than or equal to 30. The preparation method comprises the following steps: preparing and mixing the raw materials corresponding to the ingredients in the molar ratio; insulating for 3 hours at the high temperature of 1450 DEG C to form molten glass liquid; preparing a glass sheet from the glass liquid; and performing controlled crystallizing heat treatment on the glass sheet to obtain the glass ceramic. The glass ceramic has high dielectric constant and low dielectric loss, and is suitable for high-voltage capacitor mediums.

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