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Method for preparing heat elimination base plate made from alumina ceramics

A technology of alumina ceramics and alumina powder, which is applied in the field of ceramic materials, can solve problems such as high production cost, low yield, and large process fluctuations, and achieve the effects of wide product applicability, low product cost, and low equipment investment

Inactive Publication Date: 2005-04-20
上海利浦电子陶瓷厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the multiple film rolling method is relatively mature, with less investment and strong adaptability. However, the process fluctuates greatly, the product surface is rough, and the porcelain is relatively loose.
The hot die casting method requires a large investment in equipment, high production costs, poor adaptability, and low yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention is further described below by way of examples.

[0033] 1. The ball mill adopts the wet grinding method. The mixed powder is placed in a closed cylindrical drum according to the ratio of material, ball and water = 1.7:2:1, and then rolled horizontally along the axis, and the speed is controlled at 60-65 rpm. / min, the ceramic particles are broken into smaller particles by frictional movement between the grinding ball and the grinding ball or between the grinding ball and the container wall. Ball milling for 48---56 hours.

[0034] 2. Dry the ball-milled powder, and then pass it through an 80-mesh sieve to obtain alumina ceramic powder for the next process.

[0035] 3. Coarse grinding, mixing alumina powder, binder (such as polyvinyl alcohol) and water according to a certain ratio to form pellets and kneading between two rollers, so that the powder binder and solvent, etc. Thoroughly mix evenly, accompanied by blowing and preheating, the solvent ...

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PUM

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Abstract

The invention relates to a preparation method of alumina ceramic substrate, which uses alumina powder as the basic material and adds related auxiliary materials to form a mixed powder. The main process includes crushing, drying, rough grinding, fine grinding, and punching. , firing, etc. The method of the invention has stable process, reliable quality, wide product applicability, less equipment investment and low product cost.

Description

technical field [0001] The invention belongs to the technical field of ceramic materials, and in particular relates to a preparation method of an alumina ceramic heat dissipation substrate. Background technique [0002] Alumina ceramic substrates are widely used in various fields, such as machinery, instrumentation, chemical industry, biology, aerospace, etc., because of their extremely high mechanical strength and good heat dissipation performance. have a great impact on the quality of performance. At present, the preparation methods of ceramic substrates mainly include the following types: multiple rolling method, one-time rolling method, hot die casting method, tape casting method, etc. Among them, the multi-rolling film method is more mature, less investment, and strong adaptability. However, the process fluctuates greatly, the product surface is rough, and the porcelain is relatively loose. The equipment investment of hot die casting method is large, the production co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/10C04B35/622C04B35/632
Inventor 阎学秀许鸿林陈亚明范荣亮
Owner 上海利浦电子陶瓷厂