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Low-loss magnesium titanate-based microwave dielectric ceramic as well as preparation method and application thereof
The invention provides low-loss magnesium titanate-based microwave dielectric ceramic as well as a preparation method and application thereof, and relates to the technical field of microwave dielectric. Magnesium titanate ceramic powder, calcium titanate ceramic powder, photosensitive resin, a photoinitiator, a sintering aid and a dispersant are used as raw materials, high-speed ball milling is performed to obtain uniformly dispersed magnesium titanate-based microwave dielectric ceramic slurry, photocuring 3D printing is adopted to prepare a magnesium titanate-based microwave dielectric ceramic green body, and degreasing and sintering heat treatment are performed to obtain the magnesium titanate-based microwave dielectric ceramic. The low-loss magnesium titanate-based microwave dielectric ceramic is prepared. By utilizing the advantages of high forming speed, high dimensional precision and capability of realizing complex structure preparation of the photocuring 3D printing technology, a brand-new thought is provided for rapid forming and batch production of the high-performance ceramic radio frequency device with the complex structure. The density of the low-loss magnesium titanate-based microwave dielectric ceramic prepared by the method reaches 98.6%, the three-point bending strength reaches 89MPa, the low-loss magnesium titanate-based microwave dielectric ceramic has excellent microwave dielectric properties, the dielectric constant reaches 19.3, the minimum dielectric loss is 3.96 * 10 <-4 >, and the low-loss magnesium titanate-based microwave dielectric ceramic can be used for manufacturing miniaturized metamaterial plane luneberg lenses.
本发明提供了一种低损耗钛酸镁基微波介质陶瓷及其制备方法与应用，涉及微波介质技术领域。本发明以钛酸镁陶瓷粉体、钛酸钙陶瓷粉体、光敏树脂、光引发剂、烧结助剂和分散剂为原料，经高速球磨得到分散均匀的钛酸镁基微波介质陶瓷浆料，采用光固化3D打印制备钛酸镁基微波介质陶瓷生坯，经脱脂与烧结热处理，制备得到低损耗钛酸镁基微波介质陶瓷。本发明利用光固化3D打印技术成型速度快、尺寸精度高、可实现复杂结构制备的优势，为具有复杂结构的高性能陶瓷射频器件的快速成型、批量化生产提供了一种崭新的思路。本发明制备的低损耗钛酸镁基微波介质陶瓷致密度达98.6％，三点弯曲强度达89MPa，并具有优异微波介电性能，介电常数达19.3，介电损耗最低为3.96×10‑4，可用于小型化超材料平面龙勃透镜的制造。
Low-loss magnesium titanate-based microwave dielectric ceramic as well as preparation method and application thereof
The invention provides low-loss magnesium titanate-based microwave dielectric ceramic as well as a preparation method and application thereof, and relates to the technical field of microwave dielectric. Magnesium titanate ceramic powder, calcium titanate ceramic powder, photosensitive resin, a photoinitiator, a sintering aid and a dispersant are used as raw materials, high-speed ball milling is performed to obtain uniformly dispersed magnesium titanate-based microwave dielectric ceramic slurry, photocuring 3D printing is adopted to prepare a magnesium titanate-based microwave dielectric ceramic green body, and degreasing and sintering heat treatment are performed to obtain the magnesium titanate-based microwave dielectric ceramic. The low-loss magnesium titanate-based microwave dielectric ceramic is prepared. By utilizing the advantages of high forming speed, high dimensional precision and capability of realizing complex structure preparation of the photocuring 3D printing technology, a brand-new thought is provided for rapid forming and batch production of the high-performance ceramic radio frequency device with the complex structure. The density of the low-loss magnesium titanate-based microwave dielectric ceramic prepared by the method reaches 98.6%, the three-point bending strength reaches 89MPa, the low-loss magnesium titanate-based microwave dielectric ceramic has excellent microwave dielectric properties, the dielectric constant reaches 19.3, the minimum dielectric loss is 3.96 * 10 <-4 >, and the low-loss magnesium titanate-based microwave dielectric ceramic can be used for manufacturing miniaturized metamaterial plane luneberg lenses.
本发明提供了一种低损耗钛酸镁基微波介质陶瓷及其制备方法与应用，涉及微波介质技术领域。本发明以钛酸镁陶瓷粉体、钛酸钙陶瓷粉体、光敏树脂、光引发剂、烧结助剂和分散剂为原料，经高速球磨得到分散均匀的钛酸镁基微波介质陶瓷浆料，采用光固化3D打印制备钛酸镁基微波介质陶瓷生坯，经脱脂与烧结热处理，制备得到低损耗钛酸镁基微波介质陶瓷。本发明利用光固化3D打印技术成型速度快、尺寸精度高、可实现复杂结构制备的优势，为具有复杂结构的高性能陶瓷射频器件的快速成型、批量化生产提供了一种崭新的思路。本发明制备的低损耗钛酸镁基微波介质陶瓷致密度达98.6％，三点弯曲强度达89MPa，并具有优异微波介电性能，介电常数达19.3，介电损耗最低为3.96×10‑4，可用于小型化超材料平面龙勃透镜的制造。
Low-loss magnesium titanate-based microwave dielectric ceramic as well as preparation method and application thereof
一种低损耗钛酸镁基微波介质陶瓷及其制备方法与应用
HE RUJIE (author) / WANG YARU (author) / ZHANG XUEQIN (author) / CHEN JINGYI (author) / CHEN XIAOTONG (author) / GAO XIONG (author)
2024-05-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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