Zr-Ti-based microwave dielectric ceramic material and preparation method thereof

A microwave dielectric ceramic, zr-ti technology, applied in ceramics, inorganic insulators and other directions, to achieve the effect of great popularization and practical value and simple sintering conditions

Inactive Publication Date: 2012-10-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the existing technical difficulties in the preparation of Zr-Ti-based microwave dielectric ceramics, and provide a high-quality factor, low-frequency temperature coefficient for wireless communication technology that is constantly developing towards hi

Method used

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  • Zr-Ti-based microwave dielectric ceramic material and preparation method thereof
  • Zr-Ti-based microwave dielectric ceramic material and preparation method thereof
  • Zr-Ti-based microwave dielectric ceramic material and preparation method thereof

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Embodiment 1~9

[0024] The concrete implementation steps that make these embodiment microwave dielectric ceramics are as follows:

[0025] (1) Select ZrO with purity ≥99% 2 , ZnO, Nb 2 o 5 and TiO 2 As a raw material, according to the composition formula (1-x) ZrTi 2 o 6 -xZnNb 2 o 6 (0.20≤x≤0.40) molar ratio for batching, the specific formula is shown in Table 1;

[0026] (2) Put the above-mentioned prepared materials into the nylon ball mill tank, use zirconium balls as the balls and deionized water as the ball milling medium, and conduct a ball mill for 10-20 hours; Dry and pass through a 60-mesh sieve;

[0027] (3) Pre-calcining the above-mentioned primary ball mill material passed through a 60-mesh sieve at a temperature of 1000°C to 1150°C for 2 to 5 hours to obtain a pre-fired material;

[0028] (4) Add additives to the calcined material, that is, CuO equivalent to y wt% of the mass of the base material after calcining and MnO of z wt%, wherein 0.50≤y≤2.50, 0.12≤z≤0.90, the sp...

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Abstract

The invention discloses a Zr-Ti-based microwave dielectric ceramic material and a preparation method of the Zr-Ti-based microwave dielectric ceramic material, and belongs to the field of information functional materials and devices. The microwave dielectric ceramic material comprises a base material and an additive; the base material is represented by (1-x)ZrTi2O6-xZnNb2O6, wherein x is more thanor equal to 0.20 and is less than or equal to 0.40; the additive comprises CuO equaling to 0.50-2.50% of the weight of the base material and MnO equaling to 0.12-0.90% of the weight of the base material; the crystalline phase of the Zr-Ti-based microwave dielectric ceramic material comprises ZrTi2O6 phase and TiO2 phase; the dielectric constant epsilon r of the microwave dielectric ceramic material is between 41 and 53; the (Q*f) value of the microwave dielectric ceramic material is between 35,000GHz and 49,000GHz; and the frequency-temperature coefficient tau f of the microwave dielectric ceramic material is adjustable on the both sides of zero. The Zr-Ti-based microwave dielectric ceramic material is prepared by a normal process, is sintering in air, and has great popularization value and practical value. The Zr-Ti-based microwave dielectric ceramic material is suitable for production of microwave communication components, such as dielectric resonators, dielectric filters, dielectric substrates, dielectric antennae and the like, in the modern communication technology.

Description

technical field [0001] The invention belongs to the technical field of electronic information functional materials and devices, and relates to Zr-Ti-based microwave dielectric ceramics, especially novel microwave dielectric ceramics with high quality factor and low frequency temperature coefficient. It can be used to make microwave communication components such as dielectric resonators, dielectric filters, dielectric substrates and dielectric antennas in modern communication technology. Background technique [0002] Microwave dielectric ceramics are ceramics that are used as dielectric materials in microwave frequency bands (mainly UHF, SHF frequency bands, 300MHz to 300GHz) circuits and perform one or more functions. It is a hot spot in the field of microwave dielectric material research at home and abroad in recent years. direction. Resonators, filters, oscillators, attenuators, dielectric antennas, microwave integrated circuit substrates and other components made of micr...

Claims

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Application Information

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IPC IPC(8): C04B35/49C04B35/622H01B3/12
Inventor 唐斌余盛全钟朝位周晓华张树人
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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