A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-stability and high-breakdown-field-strength dielectric ceramic of donor and acceptor co-doped barium titanate system and preparation method of high-stability and high-breakdown-field-strength dielectric ceramic
The invention relates to a donor and acceptor co-doped barium titanate system dielectric ceramic with high stability and high breakdown field strength and a preparation method thereof. The preparation method comprises the following steps: preparing powder from raw materials according to the composition and molar ratio: based on 100 mol% of BaTiO3, adding 0.1 to 0.3 mol% of Yb2O3 or Gd2O3, 4 to 7 mol% of NaNbO3 or KNbO3, 2 to 5 mol% of ZnO and 0.4 to 0.8 mol% of CaZrO3, and grinding and drying the prepared powder to obtain prefabricated powder; dropwise adding PVA, mixing, grinding and granulating to obtain granulated powder; and then carrying out compression molding, glue discharging and high-temperature sintering to obtain a ceramic capacitor sample. The ceramic sample is of a single perovskite structure, and the temperature stability reaches the X8R standard; the room-temperature relative dielectric constant epsilon r is more than 4000; the breakdown field strength Eb is larger than 14 kV/mm, and the ceramic material has great application potential.
本发明涉及一种施主与受主共掺杂钛酸钡体系高稳定性和高击穿场强介电陶瓷及制备方法。将原料按照组成及摩尔比配置粉料：以BaTiO3为100mol％计，加入0.1～0.3mol％Yb2O3或Gd2O3、4～7mol％NaNbO3或KNbO3、2～5mol％ZnO、0.4～0.8mol％CaZrO3，配置好的粉料经过研磨、烘干、得到预制粉料；滴加PVA混合、研磨进行造粒，得到造粒粉料；然后进行压制成型、排胶、高温烧结，得到陶瓷电容样品。该陶瓷样品为单一钙钛矿结构，温度稳定性达到X8R标准；室温相对介电常数εr＞4000；击穿场强Eb＞14kV/mm，是一种非常有应用潜力的陶瓷材料。
High-stability and high-breakdown-field-strength dielectric ceramic of donor and acceptor co-doped barium titanate system and preparation method of high-stability and high-breakdown-field-strength dielectric ceramic
The invention relates to a donor and acceptor co-doped barium titanate system dielectric ceramic with high stability and high breakdown field strength and a preparation method thereof. The preparation method comprises the following steps: preparing powder from raw materials according to the composition and molar ratio: based on 100 mol% of BaTiO3, adding 0.1 to 0.3 mol% of Yb2O3 or Gd2O3, 4 to 7 mol% of NaNbO3 or KNbO3, 2 to 5 mol% of ZnO and 0.4 to 0.8 mol% of CaZrO3, and grinding and drying the prepared powder to obtain prefabricated powder; dropwise adding PVA, mixing, grinding and granulating to obtain granulated powder; and then carrying out compression molding, glue discharging and high-temperature sintering to obtain a ceramic capacitor sample. The ceramic sample is of a single perovskite structure, and the temperature stability reaches the X8R standard; the room-temperature relative dielectric constant epsilon r is more than 4000; the breakdown field strength Eb is larger than 14 kV/mm, and the ceramic material has great application potential.
本发明涉及一种施主与受主共掺杂钛酸钡体系高稳定性和高击穿场强介电陶瓷及制备方法。将原料按照组成及摩尔比配置粉料：以BaTiO3为100mol％计，加入0.1～0.3mol％Yb2O3或Gd2O3、4～7mol％NaNbO3或KNbO3、2～5mol％ZnO、0.4～0.8mol％CaZrO3，配置好的粉料经过研磨、烘干、得到预制粉料；滴加PVA混合、研磨进行造粒，得到造粒粉料；然后进行压制成型、排胶、高温烧结，得到陶瓷电容样品。该陶瓷样品为单一钙钛矿结构，温度稳定性达到X8R标准；室温相对介电常数εr＞4000；击穿场强Eb＞14kV/mm，是一种非常有应用潜力的陶瓷材料。
High-stability and high-breakdown-field-strength dielectric ceramic of donor and acceptor co-doped barium titanate system and preparation method of high-stability and high-breakdown-field-strength dielectric ceramic
一种施主与受主共掺杂钛酸钡体系高稳定性和高击穿场强介电陶瓷及制备方法
JI HUIMING (author) / BAI YAONING (author) / ZHAO ZICHENG (author) / LI MINGWEI (author)
2024-08-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
High-breakdown-strength dielectric ceramic material and preparation method thereof
| European Patent Office | 2021
| European Patent Office | 2021
| European Patent Office | 2023
| European Patent Office | 2019
High-dielectric low-loss doped barium calcium titanate ceramic and preparation method thereof
| European Patent Office | 2022