Microwave dielectric ceramic material as well as preparation method and application thereof: Fid-Bau Portal

Microwave dielectric ceramic material as well as preparation method and application thereof

YUAN LIANGLIANG / YUAN XIN / LI YUE / LU ZHENGWU / CHEN XUEAI

The invention belongs to the technical field of ceramics, and particularly relates to a microwave dielectric ceramic material and a preparation method and application thereof. The microwave dielectric ceramic material comprises a ceramic solid solution of which the chemical expression is xAMoO4-yLi2MoO4, wherein the A site comprises at least five transition metal elements, the total molar content of the transition metal elements is 100%, x is larger than 0 and smaller than 1, y is larger than 0 and smaller than 1, and x + y = 1. Through the combined action of the components in the ceramic solid solution, the sintering temperature of the microwave dielectric ceramic material is reduced to below 700 DEG C, the microwave dielectric ceramic material has relatively high relative dielectric constant and quality factor, relatively low temperature drift coefficient and other microwave dielectric properties, the microwave communication transmission efficiency is improved, the signal loss is reduced, the interference is reduced, energy can be stored and released more effectively, and the service life of the microwave dielectric ceramic material is prolonged. And the influence of temperature change on the ceramic material is relatively small, so that the microwave dielectric property and the stability of the service life are improved.

本申请属于陶瓷技术领域，尤其涉及一种微波介质陶瓷材料及其制备方法和应用。其中，微波介质陶瓷材料包括化学表达式为xAMoO4‑yLi2MoO4的陶瓷固溶体；其中，A位包括至少五种过渡金属元素，所述过渡金属元素的总摩尔含量为100％，0＜x＜1，0＜y＜1，且x+y＝1。通过陶瓷固溶体中各组分的共同作用，使微波介质陶瓷材料的烧结温度降到700℃以下，具有较高的相对介电常数和品质因数，较低的温漂系数等微波介电性能，提高了微波通讯传输效率、降低信号损耗、减少干扰，能更有效地储存和释放能量，并且陶瓷材料受温度变化的影响较小，提高了微波介电性能和使用寿命的稳定性。

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