High-dielectric microwave dielectric ceramic and preparation method thereof

A technology of microwave dielectric ceramics and manufacturing methods, which is applied in the field of ceramic materials and can solve problems such as high sintering temperature

Inactive Publication Date: 2021-05-07
苏州研资工业技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current practical medium ε r The sintering temperature of microwave dielectric ceramic materials is generally high

Method used

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  • High-dielectric microwave dielectric ceramic and preparation method thereof

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Embodiment Construction

[0024] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] 【Example】

[0026] Step 1): According to a certain molar ratio, Li 2 O, CoO, Ln 2 o 3 , Nb 2 o 5 and CeO 2 The oxide is fully mixed with deionized water and dispersant;

[0027] Step 2): ball milling the above mixture for 2 hours;

[0028] Step 3): After ball milling, dry at 100°C for 8 hours, then calcined at 1200°C for 10 hours, naturally lowered to room temperature, introduced into a pulverizer for pulverization, and passed through a 20-mesh sieve to obtain powder I;

[0029] Step 4): According to a certain molar r...

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Abstract

The invention discloses a high-dielectric microwave dielectric ceramic and a preparation method thereof, the chemical composition expression of the ceramic is aLi2O.bCoO.cLn2O3.dNb2O5.eCeO2 (I), and Ln is equal to Y, La or Sm. The microwave dielectric ceramic contains oxides of rare earth elements Y, La or Sm and has good microwave dielectric properties, and the microwave dielectric ceramic obtained by sintering the two oxides of the rare earth elements, Nb2O5 and CeO2 together has good microwave dielectric properties.

Description

technical field [0001] The invention relates to the field of ceramic materials, in particular to a high-medium microwave dielectric ceramic and a preparation method thereof. Background technique [0002] The ultimate goal of communication is to be able to "connect with anyone at any place and at any time", that is to say, to exchange and transmit information in all time and space. This requirement will inevitably push mobile communication to an extremely important development position, thereby promoting the development of communication devices in the direction of portability, mobility and miniaturization. At the same time, in order to meet the increasing number of users, it is necessary to develop in the direction of high carrier frequency. This rapid development of mobile communications to higher frequencies has led to an urgent demand for related devices such as microwave filters, resonators, phase shifters, microwave capacitors, and microwave dielectric substrates. Micr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/50C04B35/622
CPCC04B35/50C04B35/622C04B2235/3203C04B2235/3275C04B2235/3227C04B2235/3225C04B2235/3224C04B2235/3251C04B2235/5427C04B2235/602C04B2235/656
Inventor 张倩
Owner 苏州研资工业技术有限公司
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