Ceramic material and preparation method thereof, and ceramic sintered body and preparation method thereof: Fid-Bau Portal

Ceramic material and preparation method thereof, and ceramic sintered body and preparation method thereof

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

The invention belongs to the technical field of materials, and particularly relates to a ceramic material and a preparation method thereof, and a ceramic sintered body and a preparation method thereof. Wherein the ceramic material is prepared from the following raw material components: Mg2SiO4, Mg2TiO4 and SrTiO3, the molar ratio of the Mg2SiO4 to the Mg2TiO4 to the SrTiO3 is (0.5 to 0.8) to (0.15 to 0.45) to (0.05 to 0.2), and the total molar amount is 1. According to the ceramic material disclosed by the invention, Mg2SiO4 is taken as a main phase, so that the quality factor of the ceramic material is ensured; the Mg2TiO4 is added to adjust the dielectric constant of the ceramic material, and the SrTiO3 is added to adjust the temperature coefficient of resonance frequency of the ceramic material, so that the dielectric constant epsilon r of the prepared ceramic sintered body can reach 9-14.5, the temperature coefficient of resonance frequency is adjustable near zero, and the requirement of 5G communication on the dielectric constant of the ceramic sintered body is well met.

本申请属于材料技术领域，尤其涉及一种陶瓷材料及其制备方法，以及一种陶瓷烧结体及其制备方法。其中，陶瓷材料包括原料组分：Mg2SiO4、Mg2TiO4和SrTiO3，Mg2SiO4、Mg2TiO4和SrTiO3的摩尔比为(0.5～0.8)：(0.15～0.45)：(0.05～0.2)，且摩尔总量为1。本申请陶瓷材料，以Mg2SiO4为主相，确保了陶瓷材料的品质因数；添加Mg2TiO4调节陶瓷材料的介电常数，添加SrTiO3调整陶瓷材料的谐振频率温度系数，使其制备的陶瓷烧结体的介电常数εr能达到9～14.5，谐振频率温度系数近零可调，较好的满足5G通信对陶瓷烧结体介电常数的要求。

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