Low-frequency high dielectric reactance reduction ceramic material and preparation method thereof

Abstract

The invention discloses a low-frequency high dielectric reactance reduction ceramic material and a preparation method thereof. The reduction ceramic material consists of a main crystal phase and a modified additive. The structural formula of the reduction ceramic material is ((1-a) (Ba1-xCax)A(Ti1-yZry)BO3).a R2O3, wherein (Ba1-xCax)A(Ti1-yZry)BO3 is the structural formula of the main crystal phase and R2O3 represents the modified additive; calculated by molecular fraction, the main crystal phase is 93 to 98 percent, wherein A / B is larger than 1.00 but smaller than 1.02, x is larger than 0.3 but smaller than 1.2, and y is larger than 13 but smaller than 20, and the modified additive is 2 to 7 percent, namely the value of a is 2 to 7 percent. In the preparation method of the reduction ceramic material, secondary calcination treatment is conducted. The ceramic dielectric material conforms to the ceramic dielectric property of Y5V, has the advantages of uniform material, even particle size distribution, high dispersion, good molding process, and excellent dielectric property, and is in line with environmental-protection requirements.

Description

technical field [0001] The invention relates to a ceramic dielectric material and a preparation method thereof, in particular to a low-frequency high-dielectric anti-reduction ceramic material and a preparation method thereof. Background technique [0002] Y5V type MLCC is famous for its large capacity and low cost, and is widely used in electronic communication, military and aerospace fields, and the market demand continues to grow. With the continuous development of MLCC in the direction of miniaturization, large capacity, high reliability and low cost, the dielectric thickness is getting thinner and the number of dielectric layers is increasing; therefore, the requirements for ceramic dielectric materials are getting higher and higher. Not only must It has good dielectric properties and must have good process performance, that is, it is suitable for ultra-thin media and suitable for multi-layer stacking. Since the key technology in the manufacturing field of Ni electrode...

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Problems solved by technology

Since the key technology in the manufacturing field of Ni electrode MLCC (BME for short) is mainly monopolized by foreign countries, the dielectric materials required by domestic MLCC manufacturers, especially the high-end materials used to make large-capacity ultra-thin dielectrics, are almost entirely dependent on imports, and the price is expensive. It costs the country a lot of foreign exchange, and seriously restricts the development of my country's new electronic components and its material industry

Other domestic companies engaged in the research and development of ceramic materials, such as Shandong Guoci, have not yet put thin-dielectric and large-capacity Y5V ceramic materials on the market for mass use.

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