Ceramic dielectric material with large sintering shrinking percentage

Abstract

The invention discloses a ceramic dielectric material with a large sintering shrinking percentage. The ceramic dielectric material is characterized by comprising, by weight, 11-36 parts of ferric sodium pyrophosphate, 20-34.6 parts of sodium carbonate, 1-19 parts of borax, 10-31 parts of zirconium dioxide, 5-19 parts of chromic oxide, 24-69 parts of magnesite, 12.4-35.8 parts of magnesium oxide, 21-38 parts of kaolin, 14-79 parts of chinastone, 2-18 parts of ferric oxide, 0-27 parts of sericite, 10-34 parts of aluminum oxide and 2-17 parts of butyl rubber. The ceramic dielectric material is low in sintering temperature, high in dielectric constant, low in dielectric loss, wide in sintering shrinking percentage range and capable of cofiring with a silver inner electrode with high conductivity.

Description

technical field [0001] The invention relates to a ceramic dielectric material with wide sintering shrinkage rate. Background technique [0002] MLCC has the characteristics of small size, large capacitance, low loss rate when used at high frequency, suitable for mass production, low price and high stability. It is becoming more and more popular in information products that emphasize light, thin, short, small and surface mount technology (SMT) Under the trend, it has a good development prospect. The advantages of MLCC are high voltage and high heat resistance, wide operating temperature range, miniaturization and chip type, and are mainly used in motherboards, notebook computers, mobile phones, liquid crystal displays, TVs, CD players, automobiles and other fields. At present, MLCC has become the largest and fastest-growing chip component in the world. [0003] The military and aerospace fields have always been the main battlefield for advanced countries to demonstrate thei...

AI Technical Summary

Problems solved by technology

[0005] At present, there are many X8R ceramic materials reported, such as BaTiO3 series, BiScO3 series, and Bi0.5Na0.5TiO3 series, etc. Dielectric ceramic materials, but these ceramic materials have problems such as high sintering temperature, low dielectric constant and high loss.