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Ceramic material as well as preparation method and application thereof

A technology of ceramic materials and alumina, which is applied in semiconductor/solid-state device parts, circuits, electric solid-state devices, etc., can solve problems such as low density and strength, high product defect rate, overstress failure, etc., and achieve improved mechanical properties , reduce the sintering temperature and sintering time, and refine the grain

Pending Publication Date: 2022-04-26
NINGBO INST OF NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively low density and strength of traditional ceramic packaging materials, they are sensitive to the process during the preparation process, prone to overstress failure, and have a high defect rate of products

Method used

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  • Ceramic material as well as preparation method and application thereof
  • Ceramic material as well as preparation method and application thereof
  • Ceramic material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1. Mix 92% of alumina, 3% of magnesium oxide, 2% of niobium pentoxide, 1% of yttrium trioxide and 2% of chromium trioxide according to the predetermined mass ratio, and add 0.8 times the mass of organic cast Auxiliary, ball milling for 2 hours, wherein the organic casting aid is a mixed solution composed of ethanol, polyvinyl butyral, glycerin and phthalate, and the mass ratio of each component is: 30:15 :3:2;

[0026] Step 2, tape-casting the mixture in step 1 to obtain a green body;

[0027] Step 3, heat treating the green body obtained in step 2 at 480° C. for 2 hours to obtain a green body;

[0028] Step 4, sintering the green compact obtained in Step 3 at 1500° C. for 2 hours to obtain a ceramic material.

Embodiment 2

[0030] Step 1. Mix 97% of alumina, 1.5% of magnesium oxide, 0.5% of niobium pentoxide, 0.5% of yttrium trioxide and 0.5% of chromium trioxide according to the predetermined mass ratio, and add 1.2 times the mass ratio of organic fluid The casting aid is ball milled for 4 hours, wherein the organic casting aid is a mixed solution composed of ethanol, polyvinyl butyral, glycerin and phthalate, and the mass ratio of each component is: 30: 15:3:2;

[0031] Step 2, tape-casting the mixture in step 1 to obtain a green body;

[0032] Step 3, heat treating the green body obtained in step 2 at 480° C. for 4 hours to obtain a green body;

[0033] Step 4: Sinter the green body obtained in Step 3 at 1450° C. for 4 hours to obtain a ceramic material.

Embodiment 3

[0035] Step 1. Mix 95% of alumina, 2.5% of magnesium oxide, 1% of niobium pentoxide, 0.5% of yttrium trioxide and 1% of chromium trioxide according to the predetermined mass ratio, and add 1 times the mass ratio of organic fluid The casting aid is ball milled for 3 hours, wherein the organic casting aid is a mixed solution composed of ethanol, polyvinyl butyral, glycerin and phthalate, and the mass ratio of each component is: 30: 15:3:2;

[0036] Step 2, tape-casting the mixture in step 1 to obtain a green body;

[0037] Step 3, heat treating the green body obtained in step 2 at 480° C. for 3 hours to obtain a green body;

[0038] Step 4: Sinter the green body obtained in Step 3 at 1450° C. for 4 hours to obtain a ceramic material.

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Abstract

The invention provides a ceramic material and a preparation method and application thereof.The ceramic material is prepared from 92%-97% of aluminum oxide, 1.5%-3% of magnesium oxide, 0.5%-2% of niobium pentoxide, 0.5%-1% of yttrium oxide and 0.5%-2% of chromium sesquioxide, and the ceramic material has good density, good strength, low shrinkage rate and low dielectric constant and can be applied to packaging of electronic devices.

Description

technical field [0001] The invention relates to the technical field of ceramics, in particular to a ceramic material and its preparation method and application. Background technique [0002] At present, in order to meet the development requirements of electronic communication, weapon equipment, and aerospace, electronic components have begun to develop in the direction of miniaturization, low power consumption, intelligence, high integration, and high reliability. Therefore, it is necessary to develop small, light, and It is used in conjunction with ceramic packaging materials for various devices with high strength and low dielectric. Due to the relatively low density and strength of traditional ceramic packaging materials, they are more sensitive to the process during the preparation process, prone to overstress failure, and have a high defect rate of products. Therefore, there is an urgent need to develop ceramic materials with high density and high strength to meet the n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/117C04B35/622C04B35/64H01L23/29
CPCC04B35/117C04B35/622C04B35/64H01L23/291C04B2235/3206C04B2235/3225C04B2235/3241C04B2235/3251C04B2235/656C04B2235/6567C04B2235/77C04B2235/9661C04B2235/96
Inventor 刘振国贾光耀高晓俞建伟梁栋
Owner NINGBO INST OF NORTHWESTERN POLYTECHNICAL UNIV
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