Preparation method of corundum-mullite composite ceramic push plate

A composite ceramic and mullite technology is applied in the field of preparation of corundum-mullite composite ceramic push plates, which can solve the problems of short service life and poor creep resistance, and achieve the effect of long service life and improved service life.

Inactive Publication Date: 2005-09-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of poor creep resistance and short service life of the existing corundum-mullite pus

Method used

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  • Preparation method of corundum-mullite composite ceramic push plate
  • Preparation method of corundum-mullite composite ceramic push plate
  • Preparation method of corundum-mullite composite ceramic push plate

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0048] Example 1:

[0049] The formula of machine-pressed corundum-mullite ceramic push plate is (weight percent):

[0050] Mullite particles≤3mm 12

[0051] Alumina particles≤3mm 57.8

[0052] Alumina fine powder≤180 mesh 20

[0053] Mullite fine powder≤320 mesh 0

[0054] Ultrafine silicon powder ≤320 mesh 5.7

[0055] Silica alumina gel 4.5

Example Embodiment

[0056] Example 2:

[0057] The formula of machine-pressed corundum-mullite ceramic push plate is (weight percent):

[0058] Mullite particles≤3mm 48

[0059] Alumina particles≤3mm 16.6

[0060] Alumina fine powder≤180 mesh 19.4

[0061] Mullite fine powder≤320 mesh 7.5

[0062] Ultrafine silicon powder ≤320 mesh 5

[0063] Silica Alumina Gel 3.5

[0064] like figure 2 shown, corundum-mullite push plate microstructure (without aluminum trifluoride).

Example Embodiment

[0065] Example 3:

[0066] The formula of machine-pressed corundum-mullite ceramic push plate is (weight percent):

[0067] Mullite particles≤3mm 12

[0068] Alumina particles≤3mm 57.8

[0069] Alumina fine powder≤180 mesh 19

[0070] Mullite fine powder≤320 mesh 0

[0071] Ultrafine silicon powder ≤320 mesh 5.7

[0072] Silica alumina gel 4.5

[0073] Aluminum trifluoride 1

[0074] like image 3 shown, corundum-mullite push plate microstructure (containing aluminum trifluoride).

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Abstract

The invention discloses a preparation method of corundum-mullite composite ceramic push plate by using mullite particles, aluminium oxide particles, aluminium oxide micropowder, mullite micropowder and ultra-fine silicon micronized quartz powder as raw material, using alumina silica gel as bonding agent, and introducing aluminum fluoride mineralization agent.

Description

technical field [0001] The invention relates to ceramics and refractory products, in particular to a method for preparing a corundum-mullite composite ceramic push plate. Background technique [0002] With the continuous development of my country's electronic ceramics industry, the push plate kiln is welcomed by functional material and component manufacturers and widely used due to its advantages of short length, small footprint, simple equipment, convenient operation, and small temperature difference. The demand for push plates for push plate kilns is growing rapidly. With the continuous improvement of the sintering process and equipment of functional ceramics and devices, the sintering temperature of the tunnel kiln and the requirements for the stability of the push plate are getting higher and higher. The traditional clay, high alumina, fused silica, nitrided Silicon-bonded silicon carbide and ordinary cordierite push plates can no longer meet the requirements of use, and...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/185C04B35/624C04B35/66
Inventor 王家邦杨辉王立旺
Owner ZHEJIANG UNIV
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