A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Giant dielectric constant and low dielectric loss CCTO ceramic material and preparation method thereof
The invention discloses a preparation method of a giant dielectric constant and low dielectric loss CCTO ceramic material, which comprises the following specific steps: in an air atmosphere, taking CaCO3, CuO and TiO2 as raw materials, taking Nd2O3 and Nb2O5 as additives, adopting a solid-phase reaction process, and obtaining the giant dielectric constant and low dielectric loss ceramic material Ca (1-x) NdxCu3Ti (4-y) NbyO1 through the technological processes of material mixing, pre-sintering, forming, glue discharging and sintering. The invention provides a method for reducing dielectric loss on the basis of keeping the giant dielectric constant of the CCTO ceramic material, namely, the ceramic material with the giant dielectric constant and low dielectric loss is obtained by adding Nd2O3 and Nb2O5 in the formula and performing solid-phase sintering in the process, and when the test frequency is 20626 Hz, epsilon r is equal to 10880, and tan delta is equal to 0.020. Therefore, the CCTO ceramic material with giant dielectric constant and low dielectric loss is prepared, and the dielectric property of the CCTO ceramic material is improved. The solid phase method is fully used, the process is simple, operation is easy, repeatability is high, sample performance stability is high, and large-scale production is easy to achieve.
本发明公开了一种巨介电常数、低介电损耗CCTO陶瓷材料制备方法，具体步骤为：在空气气氛下，以CaCO3、CuO、TiO2为原料，以Nd2O3和Nb2O5作为添加剂，采用固相反应工艺，通过混料、预烧、成型、排胶、烧结工艺流程，获得巨介电常数、低介电损耗陶瓷材料Ca1‑xNdxCu3Ti4‑yNbyO1。本发明在保持CCTO陶瓷材料巨介电常数的基础上提供了一种降低介电损耗的方法，即配方上通过添加Nd2O3和Nb2O5，工艺上通过固相烧结，得到了巨介电常数、低介电损耗的陶瓷材料，其在测试频率为20626Hz时，εr＝10880，tanδ＝0.020。因此本发明制备出巨介电常数低介电损耗的CCTO陶瓷材料，改善了CCTO陶瓷材料的介电性能。本发明充分运用了固相法,工艺简单，易操作，重复性高，样品性能稳定性高，易于实现规模化生产。
Giant dielectric constant and low dielectric loss CCTO ceramic material and preparation method thereof
The invention discloses a preparation method of a giant dielectric constant and low dielectric loss CCTO ceramic material, which comprises the following specific steps: in an air atmosphere, taking CaCO3, CuO and TiO2 as raw materials, taking Nd2O3 and Nb2O5 as additives, adopting a solid-phase reaction process, and obtaining the giant dielectric constant and low dielectric loss ceramic material Ca (1-x) NdxCu3Ti (4-y) NbyO1 through the technological processes of material mixing, pre-sintering, forming, glue discharging and sintering. The invention provides a method for reducing dielectric loss on the basis of keeping the giant dielectric constant of the CCTO ceramic material, namely, the ceramic material with the giant dielectric constant and low dielectric loss is obtained by adding Nd2O3 and Nb2O5 in the formula and performing solid-phase sintering in the process, and when the test frequency is 20626 Hz, epsilon r is equal to 10880, and tan delta is equal to 0.020. Therefore, the CCTO ceramic material with giant dielectric constant and low dielectric loss is prepared, and the dielectric property of the CCTO ceramic material is improved. The solid phase method is fully used, the process is simple, operation is easy, repeatability is high, sample performance stability is high, and large-scale production is easy to achieve.
本发明公开了一种巨介电常数、低介电损耗CCTO陶瓷材料制备方法，具体步骤为：在空气气氛下，以CaCO3、CuO、TiO2为原料，以Nd2O3和Nb2O5作为添加剂，采用固相反应工艺，通过混料、预烧、成型、排胶、烧结工艺流程，获得巨介电常数、低介电损耗陶瓷材料Ca1‑xNdxCu3Ti4‑yNbyO1。本发明在保持CCTO陶瓷材料巨介电常数的基础上提供了一种降低介电损耗的方法，即配方上通过添加Nd2O3和Nb2O5，工艺上通过固相烧结，得到了巨介电常数、低介电损耗的陶瓷材料，其在测试频率为20626Hz时，εr＝10880，tanδ＝0.020。因此本发明制备出巨介电常数低介电损耗的CCTO陶瓷材料，改善了CCTO陶瓷材料的介电性能。本发明充分运用了固相法,工艺简单，易操作，重复性高，样品性能稳定性高，易于实现规模化生产。
Giant dielectric constant and low dielectric loss CCTO ceramic material and preparation method thereof
一种巨介电常数、低介电损耗CCTO陶瓷材料及其制备方法
CHENG PENGFEI (author) / DANG ZIYAN (author) / WANG DAN (author)
2022-11-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Reduction-reoxidation preparation method of giant dielectric CCTO ceramic
| European Patent Office | 2022
Reduction-reoxidation preparation method of giant dielectric and low-loss CCTO ceramic
| European Patent Office | 2022
METHOD FOR PREPARING GRAPHENE-CCTO BASED CERAMIC COMPOSITE DIELECTRIC MATERIAL
| European Patent Office | 2021
Ceramic with giant dielectric constant and low dielectric loss and preparation method thereof
| European Patent Office | 2022
Method for preparing graphene-CCTO based ceramic composite dielectric material
| European Patent Office | 2022