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A zno-mgo-tio2 series ltcc material

A zno-mgo-tio2, zn1-xmgx technology, applied in the field of dielectric ceramics, can solve problems such as instability and high slurry viscosity

Active Publication Date: 2016-03-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to reduce the sintering temperature, one of the traditional methods is to add low melting point oxides, such as B 2 o 3 and V 2 o 5 , while the free B 2 o 3 and V 2 o 5 In the late casting process, it is easy to cause the viscosity of the slurry to be too large and unstable, which limits its practical application; another method is to incorporate low-melting glass, which is generally used in the industry

Method used

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Embodiment

[0024] The material of the present invention is made of ZnO-MgO-TiO 2 The composition of the system material and the zinc borosilicate glass whose weight percentage is z (0.25%≤z≤5%) of the main crystal phase can obtain the material of the present invention through solid state reaction. ZnO-MgO-TiO 2 The composition of the material is (Zn 1-x Mg x )TiO 3 -yTiO 2 , where: 0.05≤x≤0.15, 0≤y≤0.3.

[0025] Material manufacturing method of the present invention is:

[0026] Step 1: Preparation of the main crystal phase, zinc oxide (ZnO), magnesium oxide (MgO), titanium dioxide (TiO 2 ) of the original powder according to (Zn1-x Mg x )TiO 3 -yTiO 2 Composition of ingredients, wherein: 0.05≤x≤0.15, 0≤y≤0.3; the ingredients are mixed with alcohol as ball milling medium, wet ball milling for 8-24 hours, and pre-fired in 700℃~900℃ atmosphere for 4~24 hours after drying 12 hours to synthesize the main crystal phase (Zn 1-x Mg x )TiO 3 -yTiO 2 ;

[0027] Step 2: Preparation ...

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Abstract

The invention discloses a ZnO-MgO-TiO2 series LTCC material and a preparation method thereof. The material of the invention is composed of a ZnO-MgO-TiO2 series material and zinc borosilicate glass accounting for 0.25% to 5% by weight. ZnO- The composition of MgO-TiO2 series materials is (Zn1-xMgx)TiO3-yTiO2, in which 0.05≤x≤0.15, 0≤y≤0.3, zinc borosilicate glass composition by mole percentage is 40%~70%ZnO, 25%~45% B2O3, 5% to 15% SiO2. The LTCC material prepared by the present invention is well sintered at 850°C-900°C, the dielectric constant εr=20-27, Q×f=40000-70000GHz, the resonant frequency temperature coefficient τf=-80~+10ppm / °C, and can be widely used in Microwave devices such as resonators, filters, dielectric substrates, dielectric antennas, and dielectric waveguide circuits are especially suitable for high-frequency devices.

Description

technical field [0001] The invention belongs to the field of dielectric ceramics, in particular to LTCC microwave dielectric ceramic materials. Background technique [0002] Microwave dielectric ceramics refer to ceramics that are used as dielectric materials in circuits in the microwave frequency band (mainly UHF and SHF bands) and perform one or more functions. They are widely used as resonators, filters, and dielectric substrates in modern communications. Components such as dielectric waveguide circuit and other components are the key basic materials of modern communication technology. They have very important applications in portable mobile phones, TV satellite receivers, and military radars. They are being used in the process of miniaturization and integration of modern communication tools. play an increasing role. [0003] Dielectric ceramics used in the microwave frequency band should meet the requirements: (1) a suitable dielectric constant to facilitate the miniatu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/462C04B35/622
Inventor 李恩竹王京邹蒙莹段舒心张树人
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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