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Method for preparing flaky AlON ceramic powder

A ceramic powder and flake technology, which is applied in the field of preparation of flake AlON ceramic powder, can solve the problems of restricting the application field and poor oxidation resistance, and achieve the effect of uniform microstructure

Inactive Publication Date: 2015-03-18
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to its poor oxidation resistance, it begins to oxidize at about 1000°C in the presence of oxygen, so the application field of this material is seriously restricted.

Method used

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  • Method for preparing flaky AlON ceramic powder
  • Method for preparing flaky AlON ceramic powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Mix 1 wt% of magnesium oxide with a particle size of 0.1 μm and 99 wt% of AlN-AlON mixed powder evenly, and after dry pressing, fire at 2000°C in an argon atmosphere for 180 minutes to form a sheet-shaped AlON ceramic powder, wherein AlN-AlON mixed powder is AlN powder with a particle size of 0.3μm and Al 2 o 3 The powder is uniformly mixed with a molar ratio of 1.

Embodiment 2

[0012] Mix 1 wt% of magnesium oxide with a particle size of 0.1 μm and 99 wt% of AlN-AlON mixed powder evenly, and after dry pressing, fire at 1800°C in an argon atmosphere for 60 minutes to form a sheet-shaped AlON ceramic powder. AlN-AlON mixed powder is AlN powder with a particle size of 0.3μm and Al 2 o 3 The powder is uniformly mixed with a molar ratio of 2.

Embodiment 3

[0014] Mix 20wt% magnesium oxide with a particle size of 2μm and 80wt% AlN-AlON mixed powder evenly, and after dry pressing, fire at 1500°C in an argon atmosphere for 30 minutes to form a sheet-shaped AlON ceramic powder, in which AlN -AlON mixed powder is AlN powder with a particle size of 1μm and Al 2 o 3 The powder is uniformly mixed with a molar ratio of 3.5.

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Abstract

A method for preparing flaky AlON ceramic powder is characterized in that 1-20 wt% magnesium oxide with the granularity of 0.1-2 [mu]m and 80-99 wt% AlN-AlON mixed powder are uniformly mixed and fired in argon gas atmosphere for 30-180 min at 1,500-2,000 DEG C into flaky AlON ceramic powder after being formed through dry-pressing. The AlON ceramic powder adopts a flaky structure and the microstructure is uniform.

Description

technical field [0001] The invention relates to a method for preparing a sheet-like AlON ceramic powder, which belongs to the technical field of ceramic preparation. Background technique [0002] AlON ceramic materials have excellent high temperature resistance, high temperature mechanical properties and thermal properties, and are widely used in aerospace, electronics, machinery, metallurgy and other fields. However, due to its poor oxidation resistance, it begins to oxidize at about 1000°C in the presence of oxygen, which severely restricts the application field of this material. Contents of the invention [0003] The object of the present invention is to provide a preparation method of flake AlON ceramic powder. Its technical solution is: [0004] A preparation method of flaky AlON ceramic powder, mixing 1~20wt% of magnesium oxide with a particle size of 0.1~2μm and 80~99wt% of AlN-AlON mixed powder evenly, after dry pressing and molding, under argon atmosphere 1500 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/58C04B35/622
Inventor 唐竹兴王洪忠褚为静邢新明
Owner SHANDONG UNIV OF TECH
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