Low-temperature sintered microwave medium ceramic material and preparation method thereof

A technology of microwave dielectric ceramics and low-temperature sintering, which is applied in the direction of ceramics and inorganic insulators, which can solve the problems of manufacturing cost and cycle increase, complex process, etc., and achieve low sintering temperature, simple chemical composition and preparation process, and excellent microwave dielectric performance effect

Active Publication Date: 2009-12-30
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical method synthesis and ultrafine powder as raw materials can lead to complicated process, and the manufacturing cost and cycle will increase

Method used

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  • Low-temperature sintered microwave medium ceramic material and preparation method thereof
  • Low-temperature sintered microwave medium ceramic material and preparation method thereof
  • Low-temperature sintered microwave medium ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Prepare the raw material, make the raw material BaCO 3 , ZnO, TiO 2 The molar ratio of Q and Q is BaCO 3 :ZnO:TiO 2 : Q=1: 0.5: 4.3: (0.04~0.08); wherein Q is a glass sintering aid, and the glass sintering aid is the analytically pure Li 2 O, ZnO, and B 2 o 3 Moore Billy 2 O:ZnO:B 2 o 3 = 1:2:7 mixing, after ball milling, heat preservation at 1100°C for 0.5h and then quenching; the BaCO 3 and ZnO are of analytically pure grade, the TiO 2 For chemically pure grade.

[0035] 2) The prepared BaCO 3 , ZnO and TiO 2 Mix the raw materials, put them into a nylon tank, add alcohol, wherein the volume ratio of raw materials and alcohol is 1:4, ball mill for 4 hours, take it out, dry it at 100°C, pass through a 200-mesh sieve, and press it into a block;

[0036] 3) The pressed block is pre-fired at 1000°C for 4 hours to obtain the main powder sintered block;

[0037] 4) Pulverize the above-mentioned synthesized main powder into powder, add glass sintering aid acco...

Embodiment 2

[0044] 1) Prepare the raw material, make the raw material BaCO 3 , ZnO, TiO 2 The molar ratio of Q and Q is BaCO 3 :ZnO:TiO 2 : Q==1: 0.5: 4.3: (0.02~0.05) preparation; Wherein Q is glass sintering aid, and glass sintering aid is the Li of analysis pure 2 O, ZnO, and B 2 o 3 Moore Billy 2 O:ZnO:B 2 o 3 = 3: 2: 5 mixed, after ball milling, heat preservation at 1100°C for 0.5h and then quenching; the BaCO 3 and ZnO are of analytically pure grade, the TiO 2 For chemically pure grade.

[0045] 2) The prepared BaCO 3 , ZnO and TiO 2 Mix the raw materials, put them into a nylon tank, add industrial alcohol, wherein the volume ratio of raw materials and industrial alcohol is 1:5, ball mill for 5 hours, take it out, dry it at 200°C, pass through a 200-mesh sieve, and press it into a block;

[0046] 3) The compressed block is pre-fired at 1100°C for 4 hours to obtain the main powder sintered block;

[0047] 4) Pulverize the above-mentioned synthesized main powder body into...

Embodiment 3

[0055] 1) Prepare the raw material, make the raw material BaCO 3 , ZnO, TiO 2 The molar ratio of Q and Q is BaCO 3 :ZnO:TiO 2 : Q=1: 0.2: 4.3: (0.02~0.05); wherein Q is a glass sintering aid, and the glass sintering aid is the analytically pure Li 2 O, ZnO, and B 2 o 3 Moore Billy 2 O:ZnO:B 2 o 3 = 3: 2: 5 mixed, after ball milling, heat preservation at 1100°C for 0.5h and then quenching; the BaCO 3 and ZnO are of analytically pure grade, the TiO 2 For chemically pure grade.

[0056] 2) The prepared BaCO 3 , ZnO and TiO 2 Mix the raw materials, put them into a nylon tank, add alcohol, wherein the volume ratio of raw materials and alcohol is 1:4, ball mill for 4 hours, take it out, dry it at 200°C, pass through a 200-mesh sieve, and press it into a block;

[0057] 3) The pressed block is pre-fired at 1000°C for 4 hours to obtain the main powder sintered block;

[0058] 4) Crush the above-mentioned synthesized main powder into powder, add glass sintering aid accordi...

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Abstract

The invention discloses a low-temperature sintered microwave medium ceramic material and a preparation method thereof. The material comprises the raw materials with the mol ratio: BaCO3:ZnO:TiO2:Q=1:x:(4+y):z, wherein x=0.01-0.5, y=0.01-0.5, z=0.01-0.1, and Q is glass combustion-supporting agent or BaCu (B2O5); the glass combustion-supporting agent comprises the raw materials with the mol ratio being Li2O:ZnO:B2O3=1:2:7 or Li2O: B2O3-1:2:7=3:2:5. The material can be obtained through traditional solid phase reaction synthesis. The material has lower sintering temperature (is capable of being fired at the temperature below 900 DEG C to form ceramics), is capable of being fired at the temperature of 900 DEG C to form ceramics and has better microwave dielectric property, wherein Epsilon r is equal to 25-35, Q*F is larger than 12,000, and Pi f is equal to -10ppm/DEG C to +30ppm/DEG C; in addition, the material has stable process and good repeatability and can be better co-fired and matched with a silver electrode. The low-temperature sintered microwave medium ceramic material can be used for manufacturing microwave devices, such as lower temperature co-fired ceramic (LLCC) systems, multilayer medium resonators, microwave antennae, wave filters, and the like.

Description

technical field [0001] The invention belongs to the field of electronic ceramics manufacturing, and relates to a microwave dielectric ceramic material, in particular to a low-temperature sintered microwave dielectric ceramic material and a preparation method thereof. Background technique [0002] With the rapid development of modern information technology, the miniaturization, light weight, integration and high frequency of electronic circuits have put forward requirements for small size, high frequency, high reliability and high integration of electronic components. Chipping and miniaturization have become one of the important symbols to measure the development level of electronic components. In order to meet the development needs of the electronic information industry, many new component integration technologies have emerged, such as multi-chip component technology, low temperature co-fired ceramic technology (LTCC) and chip size packaging technology. Among them, low-temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/46C04B35/622C04B35/63H01B3/12
Inventor 汪宏陈义晖周焕福代伟丁晓言
Owner XI AN JIAOTONG UNIV
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