Application and preparation method for molybdenum-based low temperature sintering microwave dielectric ceramic material

A technology of microwave dielectric ceramics and low-temperature sintered ceramics, which is applied in the application and preparation of molybdenum-based low-temperature sintered microwave dielectric ceramic materials, can solve the problems of low cost pressure and inability to take into account the localization of components, etc., and achieve single phase, The effect of adjustable dielectric constant and high quality factor

Inactive Publication Date: 2013-12-11
XIAN TECHNOLOGICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past few years, the main goal of the terminal product manufacturer was to expand the market share, the cost pressure was not great, and the localization of components could not be taken into account

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing a molybdenum-based low-temperature sintered microwave dielectric ceramic material, comprising the following steps:

[0033] 1) Analyze the purity of chemical raw materials Bi 2 o 3 、La 2 o 3 and MoO 3 According to the general formula 0.999Bi 2 o 3 -0.001La 2 o 3 -MoO 3After mixing the ingredients, fully ball mill them for 4.5 hours, then dry them at 200°C, pass through a 150-mesh sieve and briquette them, and then keep them warm at 550°C for 5 hours to obtain the sample briquettes;

[0034] 2) After pulverizing the sample sintered block, after secondary ball milling for 5 hours, drying at 200°C, granulating, and then sieving through double-layer sieves of 80 mesh and 120 mesh, the desired secondary granules can be obtained;

[0035] 3) Press the secondary particles into shape (flaky or columnar) as required, and then sinter them in air at 800-900°C for 2 hours to form porcelain to obtain a molybdenum-based low-temperature sintered microwa...

Embodiment 2

[0039] A method for preparing a molybdenum-based low-temperature sintered microwave dielectric ceramic material, comprising the following steps:

[0040] 1) Analyze the purity of chemical raw materials Bi 2 o 3 , La 2 o 3 and MoO 3 According to the general formula 0.9Bi 2 o 3 -0.1La 2 o 3 -MoO 3 After mixing the ingredients, fully ball mill them for 4.5 hours, then dry them at 200°C, pass through a 150-mesh sieve and briquette them, and then keep them warm at 550°C for 5 hours to obtain the sample briquettes;

[0041] 2) After pulverizing the sample sintered block, after secondary ball milling for 5 hours, drying at 200°C, granulating, and then sieving through double-layer sieves of 80 mesh and 120 mesh, the desired secondary granules can be obtained;

[0042] 3) Press the secondary particles into shape (flaky or columnar) as required, and then sinter them in air at 850-950°C for 2 hours to form ceramics to obtain molybdenum-based low-temperature sintered microwave di...

Embodiment 3

[0046] A method for preparing a molybdenum-based low-temperature sintered microwave dielectric ceramic material, comprising the following steps:

[0047] 1) Analyze the purity of chemical raw materials Bi 2 o 3 , La 2 o 3 and MoO 3 According to the general formula 0.8Bi 2 o 3 -0.2La 2 o 3 -MoO 3 After mixing the ingredients, fully ball mill them for 4.5 hours, then dry them at 200°C, pass through a 150-mesh sieve and briquette them, and then keep them warm at 550°C for 5 hours to obtain the sample briquettes;

[0048] 2) After pulverizing the sample sintered block, after secondary ball milling for 5 hours, drying at 200°C, granulating, and then sieving through double-layer sieves of 80 mesh and 120 mesh, the desired secondary granules can be obtained;

[0049] 3) Press the secondary particles into shape (flaky or columnar) as required, and then sinter them in air at 900-1000°C for 2 hours to form porcelain to obtain molybdenum-based low-temperature sintered microwave ...

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Abstract

The invention discloses an application and a preparation method for a molybdenum-based low temperature sintering microwave dielectric ceramic material, and belongs to the technical field of electronic ceramics and manufacturing techniques thereof. According to the preparation method, a composition expression of the ceramic material is (1-x)Bi2O3-(x)Ln2O3-MoO3, wherein the Ln is equal to La or Nd, and each x is equal to or greater than 0.001 and equal to or smaller than 0.3; the ceramic material can be prepared into a ceramic by sintering at the temperature range of 800-1000 DEG C, has excellent microwave dielectric properties, and can be used as a microwave dielectric material. The ceramic material has the following advantages: 1, adjustable dielectric constant (Epsilonr is equal to or greater than 21 and equal to or smaller than 31); 2, high quality factor (Qf is equal to 20, 300-32, 300 GHz); 3, low sintering temperature (800-1000 DEG C); 4, simple preparation technology; 5, wide application range.

Description

technical field [0001] The invention belongs to the technical field of electronic ceramics and its manufacture, and in particular relates to the application and preparation method of a molybdenum-based low-temperature sintered microwave dielectric ceramic material. Background technique [0002] Low temperature co-fired ceramic (Low Temperature Co-fired Ceramic LTCC) technology is a remarkable integrated component technology developed in recent years, which has become the mainstream technology of passive integration, the development direction of the passive component field and the new component industry. point of economic growth. The use of LTCC to prepare chip-type passive integrated devices and modules has many advantages. First, ceramic materials have excellent high-frequency and high-Q characteristics; second, using metal materials with high electrical conductivity as conductor materials is conducive to improving the quality factor of circuit systems. ; Third, it can ada...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/453C04B35/622
Inventor 庞利霞刘卫国周迪折文汇徐萍
Owner XIAN TECHNOLOGICAL UNIV
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