【 中文摘要 】本发明公开了Zr掺杂铌酸锶钡钆‑二氧化锆复合陶瓷材料，其结构式为Sr0.485Ba0.47Gd0.03Nb2‑xO6‑δ‑xZrO2，x的取值为0.01～0.3。本发明还公开了该复合陶瓷材料的制备方法，具体为：将BaCO3、SrCO3、Gd2O3、Nb2O5、ZrO2，充分混合球磨，干燥，预烧，得到预烧粉；将预烧粉在聚乙烯醇粘结剂作用下进行造粒、冷等静压下保持压片，排胶，烧结，即可。本发明通过在Sr0.485Ba0.47Gd0.03Nb2O6陶瓷体系中引入Zr4+，获得了较高的击穿电场，剩余极化显著降低，铁电性由原始典型的饱和回线逐渐演化为细长的电滞回线，显著提高了其储能密度和储能效率。

【 英文摘要 】The invention discloses a Zr-doped strontium barium gadolinium niobate-zirconium dioxide composite ceramic material. The structural formula of the Zr-doped strontium barium gadolinium niobate-zirconium dioxide composite ceramic material is Sr0. 485Ba0. 47Gd0. 03Nb2-xO6-delta-xZrO2, wherein x is 0.01-0.3. The present invention also discloses the preparation process of the composite ceramic material, and the preparation process includes mixing BaCO3, SrCO3, Gd2O3, Nb2O5 and ZrO2, ball milling, drying and pre-sintering to obtain pre-sintered powder; Granulating the presintered powder under the action of polyvinyl alcohol binder, tabletting under cold isostatic pressing, removing glue, and sintering to obtain the final product. According to the invention, Zr4 + is introduced into a Sr0. 485Ba0. 47Gd0. 03Nb2O6 ceramic system, so that a higher breakdown electric field is obtained, the remanent polarization is obviously reduced, the ferroelectric property is gradually evolved from an original typical saturation loop to a slender hysteresis loop, and the energy storage density and the energy storage efficiency are obviously improved.

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