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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AI-Extracted 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

The silica-alumina gel of different concentrations can be prepared by dehydration, adding ammonia or organic base 3-aminopropanol ...

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.

Technology Topic

Ultra fineComposite ceramic +8

Image

Examples

Experimental program(3)

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).

PUM

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Improve service life
Extended service life

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.

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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