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Rare earth oxide low-load coated barium titanate composite ceramic material and preparation method thereof
The invention discloses a rare earth oxide low-load coated barium titanate composite ceramic material which is of a core-shell structure, a core layer is barium titanate nanoparticles, and a shell layer is low-load rare earth oxide; in addition, the invention also provides a preparation method of the rare earth oxide low-load coated barium titanate composite ceramic material, which comprises the following steps: carrying out ultrasonic treatment on barium titanate powder to form a suspension, adding a rare earth precursor, dropwise adding ammonia water to adjust pH, centrifuging, drying overnight, and finally calcining in a muffle furnace to obtain the rare earth oxide low-load coated barium titanate composite ceramic material. The rare earth oxide low-load coated barium titanate composite ceramic material is obtained. The barium titanate nanoparticles are used as a core layer, and the outer surface of the barium titanate nanoparticles is coated with the rare earth oxide with low loading capacity, so that the performance of the composite ceramic material is improved on the premise of loading a small amount of rare earth oxide, the structure is more compact, the dielectric constant is further improved, and the dielectric loss is reduced; the energy storage performance of the rare earth oxide low-load coated barium titanate composite ceramic material is greatly improved.
本发明公开了一种稀土氧化物低载量包覆钛酸钡复合陶瓷材料，该复合陶瓷材料为核壳结构，核层为钛酸钡纳米颗粒，壳层为低载量的稀土氧化物；另外本发明还提供了一种稀土氧化物低载量包覆钛酸钡复合陶瓷材料的制备方法，该方法将钛酸钡粉超声形成悬浮液，加入稀土前驱体，滴加氨水调节pH，通过离心并隔夜干燥，最后在马弗炉中煅烧，得到稀土氧化物低载量包覆钛酸钡复合陶瓷材料。本发明通过将钛酸钡纳米颗粒作为核层在其外表面低载量包覆稀土氧化物，在少量负载稀土氧化物的前提下提升复合陶瓷材料的性能，使结构更加致密，进一步改善介电常数并降低介电损耗，大幅改善稀土氧化物低载量包覆钛酸钡复合陶瓷材料的储能性能。
Rare earth oxide low-load coated barium titanate composite ceramic material and preparation method thereof
The invention discloses a rare earth oxide low-load coated barium titanate composite ceramic material which is of a core-shell structure, a core layer is barium titanate nanoparticles, and a shell layer is low-load rare earth oxide; in addition, the invention also provides a preparation method of the rare earth oxide low-load coated barium titanate composite ceramic material, which comprises the following steps: carrying out ultrasonic treatment on barium titanate powder to form a suspension, adding a rare earth precursor, dropwise adding ammonia water to adjust pH, centrifuging, drying overnight, and finally calcining in a muffle furnace to obtain the rare earth oxide low-load coated barium titanate composite ceramic material. The rare earth oxide low-load coated barium titanate composite ceramic material is obtained. The barium titanate nanoparticles are used as a core layer, and the outer surface of the barium titanate nanoparticles is coated with the rare earth oxide with low loading capacity, so that the performance of the composite ceramic material is improved on the premise of loading a small amount of rare earth oxide, the structure is more compact, the dielectric constant is further improved, and the dielectric loss is reduced; the energy storage performance of the rare earth oxide low-load coated barium titanate composite ceramic material is greatly improved.
本发明公开了一种稀土氧化物低载量包覆钛酸钡复合陶瓷材料，该复合陶瓷材料为核壳结构，核层为钛酸钡纳米颗粒，壳层为低载量的稀土氧化物；另外本发明还提供了一种稀土氧化物低载量包覆钛酸钡复合陶瓷材料的制备方法，该方法将钛酸钡粉超声形成悬浮液，加入稀土前驱体，滴加氨水调节pH，通过离心并隔夜干燥，最后在马弗炉中煅烧，得到稀土氧化物低载量包覆钛酸钡复合陶瓷材料。本发明通过将钛酸钡纳米颗粒作为核层在其外表面低载量包覆稀土氧化物，在少量负载稀土氧化物的前提下提升复合陶瓷材料的性能，使结构更加致密，进一步改善介电常数并降低介电损耗，大幅改善稀土氧化物低载量包覆钛酸钡复合陶瓷材料的储能性能。
Rare earth oxide low-load coated barium titanate composite ceramic material and preparation method thereof
一种稀土氧化物低载量包覆钛酸钡复合陶瓷材料及其制备方法
CAO DONG (author) / ZHANG MIAO (author) / ZHANG JINTAO (author) / LI ZHAO (author) / QI YAQIN (author) / FENG PENGDONG (author) / AN YUFENG (author) / LI YANG (author)
2024-03-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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