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Giant dielectric constant strontium titanate dielectric ceramic and preparation method thereof
The invention belongs to the technical field of ceramic materials, and discloses a giant dielectric constant strontium titanate dielectric ceramic and a preparation method thereof. The chemical formula of the ceramic is Sr1-xEuxTiO3, wherein x is more than or equal to 0.01 and less than or equal to 0.015. The preparation method comprises the following steps: proportioning SrCO3, Eu2O3 and TiO2, mixing, and carrying out ball milling; drying the ball-milled raw materials, sieving, pre-sintering at 1000 DEG C for 3 hours, and mixing and ball-milling the pre-sintered powder; drying and sieving the ball-milled raw materials, adding a binder into the obtained powder, sieving, granulating, pressing into a green body, and discharging glue; and sintering the blank body after complete glue removal at 1400 DEG C in N2 atmosphere, and preserving heat for 6 hours to obtain the final sample. According to the invention, the Sr1-xEuxTiO3 dielectric ceramic is prepared through doping modification by adopting a traditional solid-phase method, the dielectric constant is improved, the lower dielectric loss is kept, and the dielectric property of the ceramic material is further improved, so that the actual application requirements are better met.
本发明属于陶瓷材料技术领域，公开了一种巨介电常数钛酸锶介质陶瓷及其制备方法，化学式为Sr1‑xEuxTiO3，0.01≤x≤0.015；其制备方法为将SrCO3、Eu2O3、TiO2配料后混合球磨；球磨后所得原料烘干、过筛、1000℃下预烧3小时，预烧后的粉料混合球磨；球磨后所得原料烘干、过筛，所得粉料添加粘结剂，过筛之后进行造粒，压制成生坯并排胶；排胶完全后的胚体在N2气氛下1400℃烧结，保温6h得到最终样品。本发明采用传统固相法，通过掺杂改性，制备出Sr1‑xEuxTiO3介质陶瓷，在提高介电常数的同时使其保持较低的介电损耗，进一步改善陶瓷材料的介电性能，从而更好地满足实际的应用需求。
Giant dielectric constant strontium titanate dielectric ceramic and preparation method thereof
The invention belongs to the technical field of ceramic materials, and discloses a giant dielectric constant strontium titanate dielectric ceramic and a preparation method thereof. The chemical formula of the ceramic is Sr1-xEuxTiO3, wherein x is more than or equal to 0.01 and less than or equal to 0.015. The preparation method comprises the following steps: proportioning SrCO3, Eu2O3 and TiO2, mixing, and carrying out ball milling; drying the ball-milled raw materials, sieving, pre-sintering at 1000 DEG C for 3 hours, and mixing and ball-milling the pre-sintered powder; drying and sieving the ball-milled raw materials, adding a binder into the obtained powder, sieving, granulating, pressing into a green body, and discharging glue; and sintering the blank body after complete glue removal at 1400 DEG C in N2 atmosphere, and preserving heat for 6 hours to obtain the final sample. According to the invention, the Sr1-xEuxTiO3 dielectric ceramic is prepared through doping modification by adopting a traditional solid-phase method, the dielectric constant is improved, the lower dielectric loss is kept, and the dielectric property of the ceramic material is further improved, so that the actual application requirements are better met.
本发明属于陶瓷材料技术领域，公开了一种巨介电常数钛酸锶介质陶瓷及其制备方法，化学式为Sr1‑xEuxTiO3，0.01≤x≤0.015；其制备方法为将SrCO3、Eu2O3、TiO2配料后混合球磨；球磨后所得原料烘干、过筛、1000℃下预烧3小时，预烧后的粉料混合球磨；球磨后所得原料烘干、过筛，所得粉料添加粘结剂，过筛之后进行造粒，压制成生坯并排胶；排胶完全后的胚体在N2气氛下1400℃烧结，保温6h得到最终样品。本发明采用传统固相法，通过掺杂改性，制备出Sr1‑xEuxTiO3介质陶瓷，在提高介电常数的同时使其保持较低的介电损耗，进一步改善陶瓷材料的介电性能，从而更好地满足实际的应用需求。
Giant dielectric constant strontium titanate dielectric ceramic and preparation method thereof
一种巨介电常数钛酸锶介质陶瓷及其制备方法
LI LINGXIA (author) / XUE KEYING (author) / XIE JIALING (author) / WANG MENGLONG (author)
2021-08-13
Patent
Electronic Resource
Chinese
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