Preparation method of bismuth titanate-calcium niobate solid solution high-frequency dielectric ceramics

A technology of dielectric ceramics and calcium niobate, applied in the field of high-frequency thermal compensation capacitor ceramics and high-frequency thermally stabilized capacitor ceramic materials, can solve the problems of high dielectric loss, low dielectric constant, and high sintering temperature, and achieve dielectric properties. Good, high dielectric constant, low sintering temperature
CN106478090BActive Publication Date: 2019-11-08XI AN JIAOTONG UNIV
6 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2019-11-08

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a preparation method of bismuth titanate-calcium niobate solid solution high-frequency dielectric ceramic. The preparation method aims at enabling the prepared bismuth titanate-calcium niobate solid solution high-frequency dielectric ceramic to have advantages of high dielectric constant, low dielectric loss, low sintering temperature and wide ceramic forming temperature range, and the ceramic is low in cost, environmentally friendly and pollution-free. The technical scheme adopted by the invention is as follows: 1) weighing raw materials according to the chemical metering ratio in (1-x)Bi2Ti2O7-xCa2Nb2O7; 2) subjecting the raw materials to ball milling, drying and then pre-synthesizing; 3) subjecting the pre-synthesized powder to coarse crushing, secondary ball milling and drying; 4) granulating the dried powder, and then pressing the dried powder into a thin round sheet blank; 5) performing high-temperature adhesive discharging on the thin round sheet blank, and naturally cooling the sheet blank; 6) subjecting the thin round sheet blank to sintering at high temperature and naturally cooling after high-temperature adhesive discharging is carried out.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a high-frequency heat compensation capacitor porcelain and a high-frequency heat stable capacitor porcelain material, in particular to a preparation method of a bismuth titanate-calcium niobate solid solution high-frequency dielectric ceramic. Background technique

[0002] With the rapid development of modern industry, especially the promotion and application of large-scale integrated circuits and the development of surface mount technology (SMT), the requirements for materials are becoming more and more miniaturized, high-precision, and environmentally friendly. As an important part of functional electronic materials, ceramic dielectric materials are widely used in various components, such as capacitors, resonators, filters, circuit substrates, integrated circuits, etc.

[0003] Because of its low sintering temperature, high dielectric constant, good combination with silver electrodes, good compactness of sintered ceramics, ex...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More