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A kind of preparation method of high-performance microwave dielectric ceramic material

A high-performance technology for microwave dielectric ceramics, applied in ceramics, inorganic insulators, etc., can solve the problems of long process cycle, many steps, and long time for secondary ball milling, so as to optimize the preparation process, simplify the process flow, and reduce secondary ball milling. Effect of ball milling and calcination process

Inactive Publication Date: 2017-07-18
CHINA UNIV OF MINING & TECH
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Problems solved by technology

The preparation method has many steps and a long process cycle, especially the secondary ball milling and calcination takes a long time

Method used

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  • A kind of preparation method of high-performance microwave dielectric ceramic material
  • A kind of preparation method of high-performance microwave dielectric ceramic material

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specific Embodiment approach

[0015] The present invention adopts chemical raw material ZnO (analytically pure), ZrO 2 (analytical pure), Nb 2 o 5 (Analytical Pure) Preparation of ZnZrNb 2 o 8 Microwave dielectric ceramics. The specific implementation is as follows:

[0016] (1) The chemical raw materials ZnO, ZrO 2 , Nb 2 o 5 According to the stoichiometric formula ZnZrNb 2 o 8 weighing ingredients;

[0017] (2) Mix the prepared chemical raw materials, with the mass ratio of deionized water: zirconium balls being 1:1:1.5, add them into the ball mill tank, and ball mill on the planetary ball mill for 6-12 hours;

[0018] (3) Place the ball-milled raw materials in a drying oven and dry them at 100°C;

[0019] (4) adding mass percentage to the powder after drying in step (3) is 10% paraffin wax, put it on a resistance furnace and grind it evenly, and pass through an 80-mesh sieve;

[0020] (5) The powder after step (4) is sieved is formed into a cylindrical green body of Φ10mm×5mm with a pressure...

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Abstract

The invention discloses a preparation method of high-performance microwave dielectric ceramic material. The method comprises the following steps: weighing and burdening the following chemical raw materials: ZnO, ZrO2 and Nb2O5 according to a stoichiometric formula of ZnZrNb2O8, carrying out ball milling, drying, adding 6-10wt% of paraffin, uniformly grinding, sieving, carrying out compaction molding to prepare a green body, and sintering at 1075-1225DEG C to prepare the high-performance microwave dielectric ceramic material. The preparation process is optimized on the basis of a traditional solid phase reaction method, the dielectric constant of the material is 22.13-27.21, the quality factor (Q*f) of the material is 37,000-75,000GHz, and the preparation method has the advantages of reduction of secondary ball milling and calcining technologies, technologic cycle shortening, resource saving, pollution-free process, and wide application prospect.

Description

technical field [0001] The invention relates to an electronic information material and components, in particular to a preparation method of a high-performance microwave dielectric ceramic material. Background technique [0002] With the development of mobile communication, miniaturization, integration, high frequency and low cost of microwave components have become a development trend. Microwave dielectric ceramic materials have become one of the key materials for the development of microwave components due to their high dielectric constant, low dielectric loss and stable temperature coefficient of resonance frequency. Both theory and experiments have proved that various microwave devices made of microwave dielectric ceramics, such as dielectric resonators, filters and microwave dielectric antennas, are widely used in various fields of microwave technology. [0003] ABNb 2 o 8 (A=Zn, Mg, Co, Ni, Mn; B=Ti, Zr) type niobate belongs to the medium dielectric constant microwav...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/12C04B35/495C04B35/622
Inventor 仇亮左泽文金飞石礼伟夏往所
Owner CHINA UNIV OF MINING & TECH