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Ceramic with giant dielectric constant and low dielectric loss and preparation method thereof
The invention discloses a method for preparing a copper calcium titanate (CaCu3Ti4O12, hereinafter abbreviated as CCTO) ceramic material with a giant dielectric constant and low dielectric loss by using a solid-phase sintering method, and belongs to the technical field of preparation of electronic ceramic materials. The giant dielectric constant and low loss CCTO ceramic material is characterized in that the giant dielectric constant and low loss CCTO ceramic material is composed of a main material (CaCu3Ti4O12) and an additive (Nb2O5), the chemical composition is CaCu3Ti4-xNbxO12, x is larger than or equal to 0 and smaller than or equal to 0.08, and x is larger than or equal to 0 and smaller than or equal to 0.08. The preparation method comprises the following steps: in an air atmosphere, mixing CaCO3, CuO, TiO2 and Nb2O5 according to a ratio, pre-sintering, carrying out dry pressing molding, heating the pressed and molded green body, carrying out glue discharging treatment, continuously sintering, and finally cooling to room temperature along with a furnace to obtain the ceramic material with the giant dielectric constant and the low dielectric loss. The method disclosed by the invention is simple in process, easy to operate, high in repeatability, high in sample performance stability and easy to realize large-scale production.
本发明公开了一种利用固相烧结法制备巨介电常数、低介电损耗的钛酸铜钙(CaCu3Ti4O12,以下简写为CCTO)陶瓷材料的方法，属于电子陶瓷材料制备的技术领域。本发明的巨介电常数、低损耗CCTO陶瓷材料，其特征在于：由主料(CaCu3Ti4O12)及添加剂(Nb2O5)组成,化学组成为CaCu3Ti4‑xNbxO12，其中0≤x≤0.08；在空气气氛下，将CaCO3、CuO、TiO2以及Nb2O5按比例混合后预烧，然后干压成型，压制成形的生坯升温进行排胶处理，然后继续烧结，最后随炉冷却至室温，获得巨介电常数、低介电损耗陶瓷材料。本发明所用方法工艺简单，易操作，重复性高，样品性能稳定性高，易于实现规模化生产。
Ceramic with giant dielectric constant and low dielectric loss and preparation method thereof
The invention discloses a method for preparing a copper calcium titanate (CaCu3Ti4O12, hereinafter abbreviated as CCTO) ceramic material with a giant dielectric constant and low dielectric loss by using a solid-phase sintering method, and belongs to the technical field of preparation of electronic ceramic materials. The giant dielectric constant and low loss CCTO ceramic material is characterized in that the giant dielectric constant and low loss CCTO ceramic material is composed of a main material (CaCu3Ti4O12) and an additive (Nb2O5), the chemical composition is CaCu3Ti4-xNbxO12, x is larger than or equal to 0 and smaller than or equal to 0.08, and x is larger than or equal to 0 and smaller than or equal to 0.08. The preparation method comprises the following steps: in an air atmosphere, mixing CaCO3, CuO, TiO2 and Nb2O5 according to a ratio, pre-sintering, carrying out dry pressing molding, heating the pressed and molded green body, carrying out glue discharging treatment, continuously sintering, and finally cooling to room temperature along with a furnace to obtain the ceramic material with the giant dielectric constant and the low dielectric loss. The method disclosed by the invention is simple in process, easy to operate, high in repeatability, high in sample performance stability and easy to realize large-scale production.
本发明公开了一种利用固相烧结法制备巨介电常数、低介电损耗的钛酸铜钙(CaCu3Ti4O12,以下简写为CCTO)陶瓷材料的方法，属于电子陶瓷材料制备的技术领域。本发明的巨介电常数、低损耗CCTO陶瓷材料，其特征在于：由主料(CaCu3Ti4O12)及添加剂(Nb2O5)组成,化学组成为CaCu3Ti4‑xNbxO12，其中0≤x≤0.08；在空气气氛下，将CaCO3、CuO、TiO2以及Nb2O5按比例混合后预烧，然后干压成型，压制成形的生坯升温进行排胶处理，然后继续烧结，最后随炉冷却至室温，获得巨介电常数、低介电损耗陶瓷材料。本发明所用方法工艺简单，易操作，重复性高，样品性能稳定性高，易于实现规模化生产。
Ceramic with giant dielectric constant and low dielectric loss and preparation method thereof
一种巨介电常数、低介电损耗陶瓷及其制备方法
CHENG PENGFEI (author) / WANG DAN (author)
2022-05-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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