A kind of high dielectric X8R ceramic dielectric material and preparation method thereof

A ceramic dielectric and high dielectric technology, applied in the field of ceramic dielectric materials, can solve the problems of high sintering temperature, low dielectric constant and high loss, and achieve the effect of high dielectric constant, high dielectric constant and low dielectric loss
CN109081693BActive Publication Date: 2021-04-23TAIYUAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TAIYUAN UNIV OF TECH
Publication Date
2021-04-23

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Abstract

The invention relates to the field of ceramic dielectric materials, in particular to a high-dielectric X8R ceramic dielectric material and a preparation method thereof. is composed of 5‑20% by weight Sc 2 o 3 and 80‑95% by weight of K 2 Sr 4 Nb 6 o 20 consist of. High dielectric X8R ceramic dielectric material provided by the present invention, K 2 Sr 4 Nb 6 o 20 The dielectric ceramic has a moderate sintering temperature, generally around 1250°C, a high dielectric constant, adjustable capacity temperature coefficient and low loss, and is a dielectric ceramic material with excellent performance. The present invention chooses K 2 Sr 4 Nb 6 o 20 system, take the addition of Sc 2 o 3 The method of doping modification makes it meet the performance X8R standard, and at the same time has the advantages of high dielectric constant, low dielectric loss, lead-free and environmental protection.
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Description

technical field

[0001] The invention relates to the field of ceramic dielectric materials, in particular to a high-dielectric X8R ceramic dielectric material and a preparation method thereof. Background technique

[0002] With the development of integrated circuits, electronic communication equipment terminals are developing towards miniaturization. Chip multilayer ceramic capacitors can well adapt to this trend, and thus have been widely used. And with the development of technology, its superior performance is becoming more and more obvious, and there is a tendency to gradually replace tantalum capacitors and electrolytic capacitors. The world's annual market sales are hundreds of billions, widely used in various surface mount circuits of electronic information products

[0003] The military and aerospace fields have always been the main battlefield for advanced countries to demonstrate their strength, and it is also the place where high and new technologies are first appl...

Claims

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