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A kind of low temperature sintering microwave dielectric material and preparation method thereof

A microwave dielectric material and low-temperature sintering technology are applied to the composition and preparation of low-temperature sintering microwave dielectric materials, and the field of low-temperature sintering microwave dielectric materials and their preparation, and can solve the problems of chemical reaction raw materials, unsatisfactory stability, special sintering process, etc. Achieve the effect of simple preparation process, adjustable dielectric constant and low cost

Active Publication Date: 2022-07-12
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although most of the new LTCC dielectric material systems in the above research reports exhibit excellent dielectric properties and sintering characteristics, these material systems still have problems such as complex components, unsatisfactory stability, special and sensitive sintering processes, and some systems are still There are problems such as chemical reaction with silver and toxicity of raw materials

Method used

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  • A kind of low temperature sintering microwave dielectric material and preparation method thereof
  • A kind of low temperature sintering microwave dielectric material and preparation method thereof
  • A kind of low temperature sintering microwave dielectric material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Select M=Zn, u=1, v=2, w=4, x=90wt%, y=10wt%, a=4 (44.4%), b=1 (11.2%), c=4 (44.4%) . The composition of the LTCC dielectric material can be expressed as 90wt% ZnAl 2 O 4 +10wt%(4CuO-TiO 2 -4NbO 2.5 ). start with Al 2 O 3 Powder and ZnO powder are used as raw materials, mixed by ball milling with a molar ratio of 1:1, and the dried mixture is sintered at 1150 ° C for 4 hours to obtain the matrix material ZnAl 2 O 4 powder. ZnAl 2 O 4 Powder, CuO powder, TiO 2 Powder and Nb 2 O 5 The powder is used as the raw material, and the ingredients are mixed according to the above proportions and put into a nylon ball mill tank. Anhydrous ethanol and grinding balls are added, and the balls are milled for 12 hours to make the raw materials evenly mixed. The mixed raw material is dried and then subjected to molding treatment to obtain a cylindrical green body, which is sintered at 950° C. for 4 hours to obtain a sintered and dense ceramic sample. X-ray diffraction (XR...

Embodiment 2

[0046] Select M=Zn, u=1, v=2, w=4, x=95wt%, y=5wt%, a=4 (44.4%), b=1 (11.2%), c=4 (44.4%) . The composition of the LTCC dielectric material can be expressed as 95wt% ZnAl 2 O 4 +5wt%(4CuO-TiO 2 -4NbO 2.5 ). start with Al 2 O 3 Powder and ZnO powder are used as raw materials, mixed by ball milling with a molar ratio of 1:1, and the dried mixture is sintered at 1150 ° C for 4 hours to obtain the matrix material ZnAl 2 O 4 powder. ZnAl 2 O 4 Powder, CuO powder, TiO 2 Powder and Nb2O 5 The powder is used as the raw material, and the ingredients are mixed according to the above proportions and put into a nylon ball mill tank. Anhydrous ethanol and grinding balls are added, and the balls are milled for 12 hours to make the raw materials evenly mixed. The mixed raw material is dried and then subjected to molding treatment to obtain a cylindrical green body, which is sintered at 1050° C. for 4 hours to obtain a sintered and dense ceramic sample. X-ray diffraction (XRD) a...

Embodiment 3

[0048] M=Zn, u=1, v=2, w=4, x=95 wt%, y=5 wt%, a=1 (50%), b=0, c=1 (50%) were selected. The composition of the LTCC dielectric material can be expressed as 95wt% ZnAl 2 O 4 +5wt%(CuO-NbO 2.5 ). start with Al 2 O 3 Powder and ZnO powder are used as raw materials, mixed by ball milling with a molar ratio of 1:1, and the dried mixture is sintered at 1150 °C for 4 hours to obtain the matrix material ZnAl 2 O 4 powder. ZnAl 2 O 4 Powder, CuO powder and Nb 2 O 5 The powder is used as the raw material, and the ingredients are mixed according to the above proportions and put into a nylon ball mill tank. Anhydrous ethanol and grinding balls are added, and the balls are milled for 12 hours to make the raw materials evenly mixed. The mixed raw material is dried and then subjected to molding treatment to obtain a cylindrical green body, which is sintered at 975° C. for 4 hours to obtain a sintered and dense ceramic sample. X-ray diffraction (XRD) analysis showed that the phase...

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Abstract

The invention relates to a low-temperature sintered microwave dielectric material and a preparation method thereof. The chemical composition of the low-temperature sintered microwave dielectric material is xM u Al v O w +y(aCuO‑bTiO 2 ‑cNbO 2.5 ); wherein, M is at least one of Mg, Zn, Ca, Ba, 1≤u≤2, 1≤v≤2, 4≤w≤5; x, y are mass percentages, 1 wt%≤y≤ 10 wt%, x+y=100 wt%; a, b, c are mole percentages, where 0≤a≤100%, 0≤b≤100%, 0≤c≤100%, and a+b+ c=100%.

Description

technical field [0001] The invention relates to a composition of a low-temperature sintered microwave dielectric material and a preparation method thereof, in particular to a low-temperature sintered microwave dielectric material with high quality factor and adjustable dielectric constant prepared by grain boundary activation sintering and a preparation method thereof, belonging to functional ceramics material field. Background technique [0002] Low Temperature Cofired Ceramics (LTCC) refers to the ability to co-fire with metal or alloy electrode materials such as Au, Ag, Cu and other metal or alloy electrode materials with excellent electrical conductivity at a lower temperature (< 950 ° C) to obtain functional components or The ceramic material of the package substrate. [0003] With the rapid development of electronic information technology, the demand for new high-performance LTCC materials that can meet differentiated application scenarios is becoming more and more...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/10C04B35/622
CPCC04B35/10C04B35/622C04B2235/3284C04B2235/3232C04B2235/3281C04B2235/3251C04B2235/6567C04B2235/9607C04B2235/96
Inventor 刘志甫杨燕马名生
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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