99BeO ceramic metallizing slurry and preparation method thereof

A ceramic metallization and metallization technology is applied in the field of metallization slurry formulation and preparation of high-purity BeO ceramic surface metallization treatment, which can solve the problem of low sealing performance of electronic components or components and difficult product dimensional accuracy. control, the easy growth of ceramic grains, etc., to achieve the effect of low glass phase formation temperature, good fluidity, and lower metallization sintering temperature

Inactive Publication Date: 2010-07-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the metallization slurry of the existing W-Y system formula is metallized, on the one hand, there are disadvantages of high metallization sintering temperature (usually above 1600°C) and high energy consumption; on the other hand, high-purity In the process of metallization and sintering (secondary high-temperature sintering) of Be0 ceramics, the grains of the ceramic body are easy to grow, and the product will produce secondary shrinkage and deformation, which makes it difficult to control the dimensional accuracy of the product, resulting in the airtightness of the manufactured electronic components or components. Not high, low product qualification rate and other issues

Method used

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  • 99BeO ceramic metallizing slurry and preparation method thereof
  • 99BeO ceramic metallizing slurry and preparation method thereof
  • 99BeO ceramic metallizing slurry and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0019] Take 15-35% by mass of MgO, 15-35% by mass of Al 2 o 3 , 30-60% SiO by mass 2 and 3% to 10% mass of Sm 2 o 3 Put into the ball mill jar that agate ball is housed, add deionized water, water: material: the mass ratio of ball is 5:1:5; After the end, separate the agate balls with a filter, put the material into a hot air circulation oven for drying, and keep it warm at 120°C for 4 hours; pass the dried material through a 250-300 mesh sieve for two to three times to obtain a multi-element metal oxide active agent . Mix 10%-30% mass multi-element metal oxide activator with 70-90% mass tungsten powder, put into a ball mill jar equipped with agate balls, add alcohol, the mass ratio of alcohol:material:ball is 5: 1:5, put the ball mill tank on the ball mill for ball milling, the ball milling time is 15-25 hours; after the ball milling, filter out the agate balls and put the material in the oven, keep it warm for 3 hours at 70°C, and dry it The raw materials are passed th...

specific Embodiment 2

[0021] Take 20-40% by mass of MgO and 15-35% by mass of Al 2 o 3 , 30-60% SiO by mass 2 , 2.5% to 8% mass of Sm 2 o 3 and 0.5 to 2% by mass of Nd 2 o 3Put into the ball mill jar that agate ball is housed, add deionized water, water: material: the mass ratio of ball is 5:1:5; After the end, separate the agate balls with a filter, put the material into a hot air circulation oven for drying, and keep it warm at 120°C for 4 hours; pass the dried material through a 250-300 mesh sieve for two to three times to obtain a multi-element metal oxide active agent . Mix 10%-30% mass multi-element metal oxide activator with 70-90% mass tungsten powder, put into a ball mill jar equipped with agate balls, add alcohol, the mass ratio of alcohol:material:ball is 5: 1:5, put the ball mill tank on the ball mill for ball milling, the ball milling time is 15-25 hours; after the ball milling, filter out the agate balls and put the material in the oven, keep it warm for 3 hours at 70°C, and dr...

specific Embodiment 3

[0023] Take 15-35% by mass of MgO, 15-35% by mass of Al 2 o 3 , 30-60% SiO by mass 2 , 2.5% to 8% mass of Sm 2 o 3 and 0.5-2% mass of Pr 6 o 11 Put into the ball mill jar that agate ball is housed, add deionized water, water: material: the mass ratio of ball is 5:1:5; After the end, separate the agate balls with a filter, put the material into a hot air circulation oven for drying, and keep it warm at 120°C for 4 hours; pass the dried material through a 250-300 mesh sieve for two to three times to obtain a multi-element metal oxide active agent . Mix 10%-30% mass multi-element metal oxide activator with 70-90% mass tungsten powder, put into a ball mill jar equipped with agate balls, add alcohol, the mass ratio of alcohol:material:ball is 5: 1:5, put the ball mill tank on the ball mill for ball milling, the ball milling time is 15-25 hours; after the ball milling, filter out the agate balls and put the material in the oven, keep it warm for 3 hours at 70°C, and dry it T...

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Abstract

The invention discloses a 99BeO ceramic metallizing slurry and a preparation method thereof, belonging to the technical field of electronic material. The 99BeO ceramic metallizing slurry consists of 60-70% of metallizing raw material by mass and 30%-40% of organic adhesive. The metallizing raw material consists of 70-90% of metal W by mass and 10-30% of multi-element metal oxide active agent by mass. The multi-element metal oxide active agent consists of MgO, Al2O3, SiO2 and more than one oxides containing Sm, Nd, Pr or Tb. The preparation method comprises the steps: at first, preparing the multi-element metal oxide active agent with raw materials like MgO, Al2O3, SiO2, etc. by ball milling; then mixing the multi-element metal oxide active agent with metal tungsten powder, followed by ball milling and drying so as to obtain the metallizing raw material; and finally mixing the metallizing raw material with the organic adhesive, followed by vibration milling so as to obtain the metallizing slurry. When the metallizing slurry provided by the method is used to metallize the surface of 99 beryllium oxide ceramic, the sintering temperature of metallization can be lowered, and the metallized layer on the surface of beryllium oxide ceramic devices has higher tensile strength and thermal conductivity; and simultaneously, the preparation method thereof is simple in process, low in cost, excellent in repeatability and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, and relates to a metallization slurry formula and a preparation method thereof for metallization treatment on the surface of high-purity BeO ceramics (with a content of more than 99%). Background technique [0002] The thermal conductivity of high-purity BeO ceramic material at room temperature is about 285W / mK, which is comparable to any other insulating material except that it is inferior to diamond (the thermal conductivity is as high as 1800W / mK). Due to the high thermal conductivity of high-purity BeO ceramic materials and the insulation properties of conventional media, it is widely used in microwave, millimeter wave, high-power, high-packing density electronic components or components, and is mainly used for bearing and The role of heat conduction. [0003] When BeO ceramic materials are used in microwave, millimeter wave, high-power, high-density electronic components or com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/88
Inventor 钟朝位张树人张韶华
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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