Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stable dielectric material for MLCC and preparation method thereof
The invention belongs to the technical field of ceramic materials, and discloses a stable dielectric material for an MLCC and a preparation method of the stable dielectric material, the chemical formula of the stable dielectric material is BaTiO3-2mol% of MgO4mol% of Y2O3-0.5mol% of CaZrO3-1.5mol% of MnO2; the preparation method comprises the following steps: burdening BaTiO3, MgO, Y2O3, CaZrO3 and MnO2, mixing, and carrying out ball milling; carrying out infrared drying and sieving on the raw materials obtained after ball milling to obtain powder with uniform particles; adding a binder into the powder, sieving, granulating, and pressing into a green body; putting the green body into a sintering furnace for glue discharging, and removing the binder in the green body completely; and sintering the blank without the binder in a nitrogen-hydrogen mixed gas atmosphere to obtain a final sample. A'shell-core 'structure is formed in the doping process, the'double-peak' effect of a low-temperature dielectric peak and a high-temperature dielectric peak is shown, the temperature stability of the material can be improved, and good dielectric performance can be achieved.
本发明属于陶瓷材料技术领域，公开了一种稳定型MLCC用介质材料及其制备方法，其化学式为BaTiO3‑2mol％MgO‑4mol％Y2O3‑0.5mol％CaZrO3‑1.5mol％MnO2；制备方法为将BaTiO3、MgO、Y2O3、CaZrO3、MnO2进行配料并混合球磨；球磨后所得原料红外烘干、过筛，得到颗粒均匀的粉料；粉料添加粘结剂，过筛之后进行造粒，压制成生坯；生坯放入烧结炉中进行排胶，将生坯中的粘结剂排除完全；将排除粘结剂后的胚体在氮氢混合气体氛围下烧结，得到最终样品。本发明在掺杂过程中均形成“壳‑芯”结构，表现出低温介电峰和高温介电峰的“双峰”效应，有助于改善材料的温度稳定性，能够达到较好介电性能。
Stable dielectric material for MLCC and preparation method thereof
The invention belongs to the technical field of ceramic materials, and discloses a stable dielectric material for an MLCC and a preparation method of the stable dielectric material, the chemical formula of the stable dielectric material is BaTiO3-2mol% of MgO4mol% of Y2O3-0.5mol% of CaZrO3-1.5mol% of MnO2; the preparation method comprises the following steps: burdening BaTiO3, MgO, Y2O3, CaZrO3 and MnO2, mixing, and carrying out ball milling; carrying out infrared drying and sieving on the raw materials obtained after ball milling to obtain powder with uniform particles; adding a binder into the powder, sieving, granulating, and pressing into a green body; putting the green body into a sintering furnace for glue discharging, and removing the binder in the green body completely; and sintering the blank without the binder in a nitrogen-hydrogen mixed gas atmosphere to obtain a final sample. A'shell-core 'structure is formed in the doping process, the'double-peak' effect of a low-temperature dielectric peak and a high-temperature dielectric peak is shown, the temperature stability of the material can be improved, and good dielectric performance can be achieved.
本发明属于陶瓷材料技术领域，公开了一种稳定型MLCC用介质材料及其制备方法，其化学式为BaTiO3‑2mol％MgO‑4mol％Y2O3‑0.5mol％CaZrO3‑1.5mol％MnO2；制备方法为将BaTiO3、MgO、Y2O3、CaZrO3、MnO2进行配料并混合球磨；球磨后所得原料红外烘干、过筛，得到颗粒均匀的粉料；粉料添加粘结剂，过筛之后进行造粒，压制成生坯；生坯放入烧结炉中进行排胶，将生坯中的粘结剂排除完全；将排除粘结剂后的胚体在氮氢混合气体氛围下烧结，得到最终样品。本发明在掺杂过程中均形成“壳‑芯”结构，表现出低温介电峰和高温介电峰的“双峰”效应，有助于改善材料的温度稳定性，能够达到较好介电性能。
Stable dielectric material for MLCC and preparation method thereof
一种稳定型MLCC用介质材料及其制备方法
LI LINGXIA (Autor:in) / XIE JIALING (Autor:in) / XUE KEYING (Autor:in) / WANG MENGLONG (Autor:in)
13.08.2021
Patent
Elektronische Ressource
Chinesisch
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