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High-dielectric-constant ceramic capacitor dielectric and preparation method thereof
The invention belongs to the technical field of dielectric ceramic synthesis, and discloses a high-dielectric-constant ceramic capacitor dielectric and a preparation method thereof. The raw materials of the high-dielectric-constant ceramic capacitor dielectric prepared in the invention are composed of a pre-sintered material A and a pre-sintered material B. The chemical composition of the pre-sintered material A is Ca < 1-x > LaxCu3Ti < 4-x > YxO12, and x is greater than or equal to 0.03 and less than or equal to 0.15; and the chemical composition of the pre-sintered material B is CaCu (3-y) MgyTi4O12, wherein y is more than or equal to 0.7 and less than or equal to 1.2. The preparation method of the high-dielectric-constant ceramic capacitor dielectric comprises the following steps: (1) preparing mixed powder; (2) granulating, grinding and dry-pressing the mixed powder to obtain a circular blank; and (3) sintering the circular blank to obtain the high-dielectric-constant ceramic capacitor dielectric. The high-dielectric-constant ceramic capacitor dielectric prepared by the invention has the advantages of high dielectric constant and low loss, and is simple in preparation process, low in raw material cost and suitable for popularization and application.
本申请属于电介质陶瓷合成技术领域，本申请公开了一种高介电常数陶瓷电容器介质及制备方法。本申请制得的高介电常数陶瓷电容器介质的原料由预烧料A和预烧料B组成，其中，预烧料A的化学组成为Ca1‑xLaxCu3Ti4‑xYxO12，0.03≤x≤0.15；预烧料B的化学组成为CaCu3‑y MgyTi4O12，0.7≤y≤1.2。本申请的高介电常数陶瓷电容器介质的制备方法包括以下步骤：（1）制得混合粉体；（2）将混合粉体造粒、研磨、干压成型制得圆形胚体；（3）将圆形胚体进行烧结制得高介电常数陶瓷电容器介质。本申请制得的高介电常数陶瓷电容器介质同时具备高介电常数和低损耗的优点，制作工序简单，原材料成本低廉，适合推广使用。
High-dielectric-constant ceramic capacitor dielectric and preparation method thereof
The invention belongs to the technical field of dielectric ceramic synthesis, and discloses a high-dielectric-constant ceramic capacitor dielectric and a preparation method thereof. The raw materials of the high-dielectric-constant ceramic capacitor dielectric prepared in the invention are composed of a pre-sintered material A and a pre-sintered material B. The chemical composition of the pre-sintered material A is Ca < 1-x > LaxCu3Ti < 4-x > YxO12, and x is greater than or equal to 0.03 and less than or equal to 0.15; and the chemical composition of the pre-sintered material B is CaCu (3-y) MgyTi4O12, wherein y is more than or equal to 0.7 and less than or equal to 1.2. The preparation method of the high-dielectric-constant ceramic capacitor dielectric comprises the following steps: (1) preparing mixed powder; (2) granulating, grinding and dry-pressing the mixed powder to obtain a circular blank; and (3) sintering the circular blank to obtain the high-dielectric-constant ceramic capacitor dielectric. The high-dielectric-constant ceramic capacitor dielectric prepared by the invention has the advantages of high dielectric constant and low loss, and is simple in preparation process, low in raw material cost and suitable for popularization and application.
本申请属于电介质陶瓷合成技术领域，本申请公开了一种高介电常数陶瓷电容器介质及制备方法。本申请制得的高介电常数陶瓷电容器介质的原料由预烧料A和预烧料B组成，其中，预烧料A的化学组成为Ca1‑xLaxCu3Ti4‑xYxO12，0.03≤x≤0.15；预烧料B的化学组成为CaCu3‑y MgyTi4O12，0.7≤y≤1.2。本申请的高介电常数陶瓷电容器介质的制备方法包括以下步骤：（1）制得混合粉体；（2）将混合粉体造粒、研磨、干压成型制得圆形胚体；（3）将圆形胚体进行烧结制得高介电常数陶瓷电容器介质。本申请制得的高介电常数陶瓷电容器介质同时具备高介电常数和低损耗的优点，制作工序简单，原材料成本低廉，适合推广使用。
High-dielectric-constant ceramic capacitor dielectric and preparation method thereof
一种高介电常数陶瓷电容器介质及制备方法
ZHAO GUANGTAO (author)
2024-04-26
Patent
Electronic Resource
Chinese
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