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High-quality microwave dielectric ceramic powder, microwave dielectric ceramic, preparation method and application

A microwave dielectric ceramic, high-quality technology, used in waveguides, waveguide-type devices, resonators, etc., can solve problems such as unsatisfactory quality factor and high requirements for microwave dielectric ceramic materials, and achieve improved electrical performance, quality factor, and reduction. The effect of loss

Pending Publication Date: 2021-03-26
SUZHOU RF TOP ELECTRONICS COMM
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Problems solved by technology

However, the Q×f value of the existing magnesium-aluminosilicate microwave dielectric ceramics is lower than 40,000 GHz, and its quality factor cannot meet the high requirements of microwave dielectric ceramic materials.

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  • High-quality microwave dielectric ceramic powder, microwave dielectric ceramic, preparation method and application

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[0023] The raw materials for the preparation of the high-quality microwave dielectric ceramics include magnesium oxide, nickel oxide, aluminum oxide, and silicon dioxide, and their mass ratios are based on the composition expression (Mg 1-x Ni x ) 2 al 4 Si 5 o 18 Calculate the molar ratio of each element.

[0024] The present invention also provides a method for preparing the above-mentioned high-quality microwave dielectric ceramics, comprising the following steps:

[0025] (1) According to the composition expression (Mg 1-x Ni x ) 2 al 4 Si 5 o 18 The molar ratio of each element in MgO powder, NiO powder, Al 2 o 3 Powder, SiO 2 The powder is batched, mixed fully and ball milled, dried and sieved after ball milling, and then put into a corundum crucible for roasting to obtain a pre-fired powder; wherein, in the composition expression (Mg 1-x Ni x ) 2 al 4 Si 5 o 18 Among them, x represents the molar ratio, and x=0.1~0.5;

[0026] (2) fully ball-milling th...

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Abstract

The invention discloses high-quality microwave dielectric ceramic as well as a preparation method and application thereof. The composition expression of the high-quality microwave dielectric ceramic is (Mg1-xNix) 2Al4Si5O18, x represents a molar ratio, and x is equal to 0.1 to 0.5. The invention further discloses high-quality microwave dielectric ceramic powder. Nickel oxide powder in the microwave dielectric ceramic powder replaces a part of magnesium oxide powder and matches other powder, so that the microwave dielectric ceramic with a (Mg1-xNix) 2Al4Si5O18 structure can be obtained; Ni in the microwave dielectric ceramic with the structure replaces part of Mg, so that the quality factor of the microwave dielectric ceramic is improved, the loss of a microwave component can be reduced after the microwave dielectric ceramic is applied to the microwave component, and the electrical property of the microwave component is improved.

Description

technical field [0001] The invention belongs to the technical field of microwave dielectric ceramics, and in particular relates to a high-quality microwave dielectric ceramic powder and microwave dielectric ceramics, a preparation method and an application. Background technique [0002] Microwave dielectric ceramics is a new type of functional ceramics developed in recent decades, and it is the key material for manufacturing microwave dielectric resonators and filters. On the basis of the original microwave ferrite, its formula and manufacturing process have been greatly upgraded, so that it has excellent properties such as suitable electrical constant, low microwave loss, and small temperature coefficient, and is suitable for making various modern microwave ferrites. Devices, such as frequency stabilized oscillators, filters, duplexers, etc. in electronic countermeasures, navigation, communications, radar, household satellite direct TV receivers, and mobile phones, etc., ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/195C04B35/622C04B35/626C04B35/64H01P1/20H01P7/10H01P3/16
CPCC04B35/195C04B35/622C04B35/62645C04B35/62695C04B35/64H01P1/2002H01P7/10H01P3/16C04B2235/3206C04B2235/3279C04B2235/656C04B2235/6567
Inventor 朴灿映
Owner SUZHOU RF TOP ELECTRONICS COMM
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