Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bi2O3-doped BaTiO3-based ceramic material for X7R type MLCC and preparation method of Bi2O3-doped BaTiO3-based ceramic material
The invention relates to the field of ceramic materials, and particularly discloses a Bi2O3-doped BaTiO3-based ceramic material for an X7R type MLCC and a preparation method of the Bi2O3-doped BaTiO3-based ceramic material, and the preparation method comprises the following steps: mixing Nb2O5, MgO, BaCO3, TiO2 and Bi2O3 according to the molar percentage in a chemical formula (BaTiO3-0. 05-0. 01MgO)-xBi2O3 (x is greater than 0 and less than 0.02) to obtain a mixture, carrying out primary ball milling on the mixture, drying, grinding and sieving to obtain prefabricated powder, and sintering the prefabricated powder to obtain the X7R type MLCC. Pre-sintering the prefabricated powder to obtain a blocky solid; crushing the blocky solid to obtain solid powder, carrying out secondary ball milling on the solid powder, drying, and sieving to obtain material powder; pouring the material powder into a mold, pressing the material powder into a sheet under the pressure of 550-600N, demolding to obtain a sample with an intact shape, molding the sample in a cold isostatic press, maintaining the pressure of 250-350Mpa for 180s to obtain a ceramic green sheet, and sintering the ceramic green sheet to obtain the Bi2O3-doped BaTiO3-based ceramic material. The ceramic material has the advantages of high dielectric constant, low dielectric loss and good temperature stability.
本发明涉及陶瓷材料的领域，具体公开了一种X7R型MLCC用Bi2O3掺杂BaTiO3基陶瓷材料及其制备方法，制备方法包括以下步骤：根据化学式(BaTiO3‑0.01Nb2O5‑0.01MgO)‑xBi2O3(0＜x＜0.02)中摩尔百分比，取Nb2O5、MgO、BaCO3、TiO2和Bi2O3混合得到混合物，对混合物进行第一次球磨，烘干后研磨、过筛得到预制粉体，将预制粉体预烧后得到块状固体；将块状固体粉碎后得到固体粉料，对固体粉料进行第二次球磨，烘干后过筛得到材料粉体；将材料粉体倒入模具后在550～600N压力下压制成片，脱模后得到形状完好的试样，将试样放入冷等静压机成型，在250～350Mpa的压力下保压180s得到陶瓷生片，将陶瓷生片烧结后得到Bi2O3掺杂BaTiO3基陶瓷材料。本发明中陶瓷材料具有较高介电常数、低介电损耗、良好温度稳定性。
Bi2O3-doped BaTiO3-based ceramic material for X7R type MLCC and preparation method of Bi2O3-doped BaTiO3-based ceramic material
The invention relates to the field of ceramic materials, and particularly discloses a Bi2O3-doped BaTiO3-based ceramic material for an X7R type MLCC and a preparation method of the Bi2O3-doped BaTiO3-based ceramic material, and the preparation method comprises the following steps: mixing Nb2O5, MgO, BaCO3, TiO2 and Bi2O3 according to the molar percentage in a chemical formula (BaTiO3-0. 05-0. 01MgO)-xBi2O3 (x is greater than 0 and less than 0.02) to obtain a mixture, carrying out primary ball milling on the mixture, drying, grinding and sieving to obtain prefabricated powder, and sintering the prefabricated powder to obtain the X7R type MLCC. Pre-sintering the prefabricated powder to obtain a blocky solid; crushing the blocky solid to obtain solid powder, carrying out secondary ball milling on the solid powder, drying, and sieving to obtain material powder; pouring the material powder into a mold, pressing the material powder into a sheet under the pressure of 550-600N, demolding to obtain a sample with an intact shape, molding the sample in a cold isostatic press, maintaining the pressure of 250-350Mpa for 180s to obtain a ceramic green sheet, and sintering the ceramic green sheet to obtain the Bi2O3-doped BaTiO3-based ceramic material. The ceramic material has the advantages of high dielectric constant, low dielectric loss and good temperature stability.
本发明涉及陶瓷材料的领域，具体公开了一种X7R型MLCC用Bi2O3掺杂BaTiO3基陶瓷材料及其制备方法，制备方法包括以下步骤：根据化学式(BaTiO3‑0.01Nb2O5‑0.01MgO)‑xBi2O3(0＜x＜0.02)中摩尔百分比，取Nb2O5、MgO、BaCO3、TiO2和Bi2O3混合得到混合物，对混合物进行第一次球磨，烘干后研磨、过筛得到预制粉体，将预制粉体预烧后得到块状固体；将块状固体粉碎后得到固体粉料，对固体粉料进行第二次球磨，烘干后过筛得到材料粉体；将材料粉体倒入模具后在550～600N压力下压制成片，脱模后得到形状完好的试样，将试样放入冷等静压机成型，在250～350Mpa的压力下保压180s得到陶瓷生片，将陶瓷生片烧结后得到Bi2O3掺杂BaTiO3基陶瓷材料。本发明中陶瓷材料具有较高介电常数、低介电损耗、良好温度稳定性。
Bi2O3-doped BaTiO3-based ceramic material for X7R type MLCC and preparation method of Bi2O3-doped BaTiO3-based ceramic material
一种X7R型MLCC用Bi2O3掺杂BaTiO3基陶瓷材料及其制备方法
LI XIN (Autor:in) / ZHAO ZHIXIONG (Autor:in) / LIU SENWEI (Autor:in) / ZHANG QI (Autor:in)
04.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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