Low-temperature co-fired ceramic material and preparation method thereof

A low-temperature co-fired ceramic and ceramic material technology, applied in the field of ceramic material manufacturing, can solve problems such as harmful intercrystalline glass, inconvenience, and lower system quality factor

Inactive Publication Date: 2022-03-15
无锡市高宇晟新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when sintering aids or sintering additives are used, harmful intercrystalline glass or impurity phases will be formed in the ceramic system, thereby reducing the quality factor of the system. Therefore, it is necessary to develop new LTCC materials without additives
[0004] In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve

Method used

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  • Low-temperature co-fired ceramic material and preparation method thereof
  • Low-temperature co-fired ceramic material and preparation method thereof
  • Low-temperature co-fired ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The composition chemical formula of the LTCC ceramic material of the present embodiment is Li 3 Mg 2 Nb 0.75 V 0.25 (O 0.9 f 0.2 ) 6 .

[0058] Its preparation method comprises the following steps:

[0059] Step 1, according to the composition chemical formula Li of described ceramic material 3 Mg 2 Nb 0.75 V 0.25 (O 0.9 f 0.2 ) 6 Weigh the reactant raw material Li 2 CO 3 , LiF, MgO, Nb 2 o 5 and V 2 o 5 and mix evenly, pour it into a ball mill jar, add zirconium balls and deionized water for ball milling for 10 hours to obtain a mixed slurry, dry the mixed slurry, pre-calcine at 630°C for 5 hours, and fully ball mill Mix to obtain a mixed material powder with a particle size of 700nm;

[0060] Step 2. Mix the mixed material powder with binder and mold release agent according to the mass ratio of 100:8:2, and then perform spray granulation to obtain a spherical granulated powder with a particle size of 80 μm. The agent is an aqueous solution of poly...

Embodiment 2

[0063] The composition chemical formula of the LTCC ceramic material of the present embodiment is Li 3 Mg 2 Nb 0.78 V 0.22 (O 0.975 f 0.05 ) 6 .

[0064] Its preparation method comprises the following steps:

[0065] Step 1, according to the composition chemical formula Li of described ceramic material 3 Mg 2 Nb 0.78 V 0.22 (O 0.975 f 0.05 ) 6 Weigh the reactant raw material Li 2 CO 3 , LiF, MgO, Nb 2 o 5 and V 2 o 5 and mix evenly, pour it into a ball mill jar, add zirconium balls and deionized water for ball milling for 9 hours to obtain a mixed slurry, dry the mixed slurry and pre-calcine at a temperature of 620°C for 4 hours, and fully ball mill Mixing to obtain a mixed material powder with a particle size of 600nm;

[0066] Step 2. Mix the mixed material powder with binder and mold release agent according to the mass ratio of 100:4:5, then spray granulate to obtain a spherical granulated powder with a particle size of 60 μm. The agent is an aqueous so...

Embodiment 3

[0069] The composition chemical formula of the LTCC ceramic material of the present embodiment is Li 3 Mg 2 Nb 0.8 V 0.2 (O 0.985 f 0.03 ) 6 .

[0070] Its preparation method comprises the following steps:

[0071] Step 1, according to the composition chemical formula Li of described ceramic material 3 Mg 2 Nb 0.8 V 0.2 (O 0.985 f 0.03 ) 6 Weigh the reactant raw material Li 2 CO 3 , LiF, MgO, Nb 2 o 5 and V 2 o 5 and mix evenly, pour it into a ball mill jar, add zirconium balls and deionized water for ball milling for 11 hours to obtain a mixed slurry, dry the mixed slurry and pre-calcine at a temperature of 650°C for 3 hours, and fully ball mill Mix to obtain a mixed material powder with a particle size of 800nm;

[0072] Step 2. Mix the mixed material powder with binder and mold release agent according to the mass ratio of 100:6:3, and then spray granulate to obtain a spherical granulated powder with a particle size of 100 μm. The agent is an aqueous sol...

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Abstract

The invention provides a low-temperature co-fired ceramic material, the chemical expression of the ceramic material is Li3Mg2NbxV1-x (O1-y / 2Fy) 6, x is more than or equal to 0.75 and less than or equal to 1, and y is more than or equal to 0.03 and less than or equal to 0.25. The invention also provides a preparation method of the low-temperature co-fired ceramic material, which comprises the following steps: a pre-sintering step: proportioning and pre-sintering reactant raw materials according to the stoichiometric ratio of the chemical expression Li3Mg2NbxV1-x (O1-y / 2Fy) 6 to obtain mixed material powder; a granulation step: adding a binder and a release agent into the mixed material powder, fully mixing, and carrying out spray granulation to obtain granulated powder; and a sintering step: carrying out dry pressing on the granulation powder to prepare a green body, sintering the green body, and cooling to obtain the low-temperature co-fired ceramic material. Therefore, the low-temperature co-fired ceramic material disclosed by the invention can realize low-temperature sintering on the premise of not adding a sintering aid, so that the performance of the ceramic material is greatly improved, and the preparation method is simple in process, low in cost and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of ceramic material manufacturing, in particular to a low-temperature co-fired ceramic material and a preparation method thereof. Background technique [0002] At present, with the rapid development of 5G (5th Generation Mobile Communication Technology, fifth generation mobile communication technology) technology, the requirements for miniaturization, light weight and multi-function of electronic devices are getting higher and higher. In the fields of the Internet of Things, satellite communications, wearable devices, electronic medical equipment, etc., in order to realize the integration of electronic devices, three technical means are currently widely used, including thick film printing, high temperature co-fired ceramics (HTCC, High Temperatureco-fired Ceramic) and Low Temperature Co-fired Ceramic (LTCC, Low Temperature Co-fired Ceramic). Compared with thick film printing, LTCC technology does not requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/495C04B35/622
CPCC04B35/495C04B35/622C04B2235/3203C04B2235/3206C04B2235/3239C04B2235/445C04B2235/5445C04B2235/602C04B2235/656C04B2235/6567C04B2235/5436
Inventor 冒旭王秀红叶荣黄庆焕
Owner 无锡市高宇晟新材料科技有限公司
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