CN103664184B - Method for preparing flaky AlON ceramic powder - Google Patents
Method for preparing flaky AlON ceramic powder Download PDFInfo
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- CN103664184B CN103664184B CN201310611206.3A CN201310611206A CN103664184B CN 103664184 B CN103664184 B CN 103664184B CN 201310611206 A CN201310611206 A CN 201310611206A CN 103664184 B CN103664184 B CN 103664184B
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- alon
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- ceramic powder
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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
The present invention relates to a kind of preparation method of flaky AlON ceramic powder, belong to field of ceramic preparation technology.
Background technology
AlON stupalith has excellent resistance to elevated temperatures, mechanical behavior under high temperature and thermal property, is widely used in the fields such as aerospace, electronics, machinery, metallurgy.But because its resistance of oxidation is poor, under aerobic existent condition, about about 1000 DEG C start oxidation, therefore, the Application Areas of serious this material of restriction.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of flaky AlON ceramic powder.Its technical scheme is:
A kind of preparation method of flaky AlON ceramic powder, be that magnesium oxide 1 ~ 20wt%, the AlN-AlON mixed powder 80 ~ 99wt% of 0.1 ~ 2 μm mixes by granularity, within 30 ~ 180 minutes, fire at the temperature of 1500 ~ 2000 DEG C under an argon atmosphere after dry-pressing formed, flaky AlON ceramic powder is made in grinding, wherein AlN-AlON mixed powder to be granularity be AlN powder and the Al of 0.3 ~ 3 μm
2o
3the ratio uniform that powder is 1 ~ 5 with mol ratio is mixed.
Compared with prior art, its advantage is in the present invention:
1, the flaky AlON ceramic powder uniform microstructure prepared of the present invention, angled between sheet and sheet, and be connected with body;
2, each grain surface is that sheet AlON is connected to form network structure, contacts forming weak interface with other crystal compound tenses.
Accompanying drawing explanation
Fig. 1 is the XRD photo of flaky AlON ceramic powder prepared by embodiment 1; Fig. 2 is flaky AlON ceramic powder Photomicrograph prepared by embodiment 2.
Embodiment
embodiment 1
Be that magnesium oxide 1wt%, AlN-AlON mixed powder 99wt% of 0.1 μm mixes by granularity, after dry-pressing formed, the temperature of 2000 DEG C is fired into flaky AlON ceramic powder in lower 180 minutes under an argon atmosphere, wherein AlN-AlON mixed powder to be granularity be AlN powder and the Al of 0.3 μm
2o
3the ratio uniform that powder is 1 with mol ratio is mixed.
embodiment 2
Be that magnesium oxide 1wt%, AlN-AlON mixed powder 99wt% of 0.1 μm mixes by granularity, after dry-pressing formed, the temperature of 1800 DEG C is fired into flaky AlON ceramic powder in lower 60 minutes under an argon atmosphere, wherein AlN-AlON mixed powder to be granularity be AlN powder and the Al of 0.3 μm
2o
3the ratio uniform that powder is 2 with mol ratio is mixed.
embodiment 3
Be that magnesium oxide 20wt%, AlN-AlON mixed powder 80wt% of 2 μm mixes by granularity, after dry-pressing formed, the temperature of 1500 DEG C is fired into flaky AlON ceramic powder in lower 30 minutes under an argon atmosphere, wherein AlN-AlON mixed powder to be granularity be AlN powder and the Al of 1 μm
2o
3the ratio uniform that powder is 3.5 with mol ratio is mixed.
embodiment 4
Be that magnesium oxide 10wt%, AlN-AlON mixed powder 90wt% of 1 μm mixes by granularity, after dry-pressing formed, the temperature of 1700 DEG C is fired into flaky AlON ceramic powder in lower 90 minutes under an argon atmosphere, wherein AlN-AlON mixed powder to be granularity be AlN powder and the Al of 2 μm
2o
3the ratio uniform that powder is 5 with mol ratio is mixed.
Claims (1)
1. the preparation method of a flaky AlON ceramic powder, it is characterized in that: be that magnesium oxide 1 ~ 20wt%, the AlN-AlON mixed powder 80 ~ 99wt% of 0.1 ~ 2 μm mixes by granularity, within 30 ~ 180 minutes, fire at the temperature of 1500 ~ 2000 DEG C under an argon atmosphere after dry-pressing formed, flaky AlON ceramic powder is made in grinding, wherein AlN-AlON mixed powder to be granularity be AlN powder and the Al of 0.3 ~ 3 μm
2o
3the ratio uniform that powder is 1 ~ 5 with mol ratio is mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310611206.3A CN103664184B (en) | 2013-11-28 | 2013-11-28 | Method for preparing flaky AlON ceramic powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310611206.3A CN103664184B (en) | 2013-11-28 | 2013-11-28 | Method for preparing flaky AlON ceramic powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103664184A CN103664184A (en) | 2014-03-26 |
| CN103664184B true CN103664184B (en) | 2015-03-18 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310611206.3A Expired - Fee Related CN103664184B (en) | 2013-11-28 | 2013-11-28 | Method for preparing flaky AlON ceramic powder |
Country Status (1)
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105016776B (en) * | 2014-04-18 | 2017-04-12 | 中国科学院上海硅酸盐研究所 | Aluminum oxynitride transparent ceramic and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700977A (en) * | 2009-10-30 | 2010-05-05 | 武汉理工大学 | Method for rapidly preparing MgAlON transparent ceramic powder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413804C (en) * | 2005-06-14 | 2008-08-27 | 郑州大学 | Sheet-like microcrystalline toughened MgAlON composite corindon material preparation method |
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- 2013-11-28 CN CN201310611206.3A patent/CN103664184B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700977A (en) * | 2009-10-30 | 2010-05-05 | 武汉理工大学 | Method for rapidly preparing MgAlON transparent ceramic powder |
Non-Patent Citations (2)
| Title |
|---|
| 反应烧结法制备MgAlON的合成机理及烧结行为的研究;张厚兴等;《耐火材料》;20021031(第5期) * |
| 陈肇友.9.5阿隆与镁阿隆及其复合耐火材料热力学.《化学热力学与耐火材料》.冶金工业出版社,2005,第558页. * |
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| CN103664184A (en) | 2014-03-26 |
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