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V-based low temperature sintering microwave medium ceramic material and preparation method thereof

A technology of microwave dielectric ceramics and microwave dielectric materials, applied in the field of V-based low-temperature sintered microwave dielectric ceramic materials and its preparation, and new microwave dielectric ceramic materials, which can solve the problems of low performance and achieve high Q×f value and low sintering temperature , The effect of reducing manufacturing costs

Active Publication Date: 2013-04-10
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing LTCC substrate materials are based on Al 2 o 3 Based on the low-melting glass phase to reduce its sintering temperature, this type of material has relatively low performance due to the doping of a large amount of glass phase. Therefore, it is suitable for LTCC technology, excellent microwave performance, and silver electrode New microwave dielectric ceramic substrate materials with simple co-firing, chemical composition and preparation process are of great significance

Method used

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  • V-based low temperature sintering microwave medium ceramic material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0018] (1) First, the chemical raw material Li 2 CO 3 , MgO and NH 4 VO 3 Moore Billy 2 CO 3 : MgO: NH 4 VO 3 =0.5:4:3 to prepare the main powder.

[0019] (2) Mix the main powder prepared in step (1) evenly, add alcohol to the main powder according to the weight ratio of the main powder and alcohol as 1:1, and mix for 4 hours by wet grinding method. Dry at 120°C, press into blocks after drying, and then raise the pressed block-shaped raw materials from room temperature to 800°C at a heating rate of 5°C / min and keep it at this temperature for 4 hours to make sintered blocks.

[0020] (3) Crush the burnt block made in step (2), add alcohol to the powder according to the mass ratio of powder and alcohol as 1:1, put it into a nylon tank and ball mill it for 4 hours, take it out, put it in the oven Dry at 120°C, granulate and press into small discs, deglue at 550°C, cool in the furnace to obtain porcelain material, and then sinter the ceramic material at 950°C for 4 hours...

Embodiment 2

[0023] (1) First, the chemical raw material Li 2 CO 3 , MgO and NH 4 VO 3 Moore Billy 2 CO 3 : MgO: NH 4 VO 3 =0.5:4:3 to prepare the main powder.

[0024] (2) Mix the main powder prepared in step (1) evenly, add alcohol to the main powder according to the weight ratio of the main powder and alcohol at 1:1, mix for 6 hours by wet grinding method, and grind it finely Dry at 140°C, press into blocks after drying, then raise the pressed block-shaped raw materials from room temperature to 850°C at a heating rate of 5°C / min and keep at this temperature for 4 hours to make sintered blocks.

[0025] (3) Crush the sintered block made in step (2), ball mill for 4 hours, put it in an oven for drying, and then add 0.5% Bi by weight 2 o 3, made into powder, according to the volume ratio of powder and alcohol 1:1, add alcohol to the powder, put it into a nylon tank and ball mill for 6 hours, take it out, put it in an oven and dry it at 130°C, after granulation Pressed into small...

Embodiment 3

[0028] (1) First, the chemical raw material Li 2 CO 3 , MgO and NH 4 VO 3 Moore Billy 2 CO 3 : MgO: NH 4 VO 3 =0.5:4:3 to prepare the main powder.

[0029] (2) Mix the main powder prepared in step (1) evenly, add alcohol to the main powder according to the weight ratio of the main powder and alcohol at 1:1, mix for 8 hours by wet grinding method, and grind it finely Dry at 140°C, press into blocks after drying, then raise the pressed block-shaped raw materials from room temperature to 850°C at a heating rate of 5°C / min and keep at this temperature for 4 hours to make sintered blocks.

[0030] (3) Pulverize the burnt block made in step (2), ball mill for 8 hours, put it into an oven for drying, and then add 1% Bi by weight 2 o 3 , made into powder, according to the volume ratio of powder and alcohol is 1:1, add alcohol to the powder, put it into a nylon tank for ball milling for 6 hours, take it out, put it in an oven and dry it at 140°C, after granulation Pressed in...

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Abstract

The invention discloses a V-based low temperature sintering microwave medium ceramic material and a preparation method thereof. The material comprises the following components in percentage by weight: 99-100% of LiMg4V3O12 and 0-1% of low melting point substance, wherein the low melting point substance is one of Bi2O3, B2O3 and BaCu (B2O5); and through solid phase reaction, the material disclosed by the invention can be obtained. According to the invention, the prepared microwave medium ceramic has the advantages of low sintering temperature, excellent microwave performance, high Q*f value and small temperature coefficient Tauf of resonance frequency and cannot react with silver (Ag); and pure silver can be used as an inner electrode for co-firing, so that the manufacturing cost of the device can be greatly reduced and the microwave medium ceramic material can be used for manufacturing low temperature co-fired LTCC (Low Temperature Co Fired Ceramic) microwave substrates.

Description

technical field [0001] The invention belongs to the field of electronic ceramics and its manufacture, and relates to a novel microwave dielectric ceramic material, in particular to a V-based low-temperature sintered microwave dielectric ceramic material and a preparation method thereof. Background technique [0002] With the rapid development of microelectronics information technology, the miniaturization, portability, multi-function, digitalization, high reliability and high performance requirements of mobile communication and portable terminal equipment have further promoted the electronic components to be miniaturized, integrated and The direction of high frequency is developing, which requires the substrate to meet the requirements of high propagation speed, high wiring density and large chip packaging. Low Temperature Co-fired Ceramics (LTCC) is a technology used to achieve high-integration, high-performance circuit packaging. Compared with other integrated technologie...

Claims

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Application Information

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IPC IPC(8): C04B35/495C04B35/622
Inventor 陈秀丽贺芬周焕福陈杰苗雁冰王玮方亮
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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