CN104628366A - Aluminum oxide-silicon nitride ceramic lining and preparation method thereof - Google Patents
Aluminum oxide-silicon nitride ceramic lining and preparation method thereof Download PDFInfo
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- CN104628366A CN104628366A CN201510071608.8A CN201510071608A CN104628366A CN 104628366 A CN104628366 A CN 104628366A CN 201510071608 A CN201510071608 A CN 201510071608A CN 104628366 A CN104628366 A CN 104628366A
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- silicon nitride
- aluminum oxide
- preparation
- nitride ceramic
- ceramic lining
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Abstract
The invention relates to an aluminum oxide-silicon nitride ceramic lining and a preparation method thereof, and belongs to the field of ceramic materials. The aluminum oxide-silicon nitride ceramic lining is prepared from main raw materials of A: alpha-Al2O3 powder with the purity of 95% and B: SiC powder. The preparation method comprises the following steps: blending the raw materials A and B in a formulated ratio, putting the blended materials into a ball mill for ball milling, further performing spraying drying pelleting on the uniformly mixed slurry, screening, and implementing a dry-pressing forming method. The sintering process is performed in a high-temperature atmosphere oven, N2 is adopted for protection, and the sintering temperature is 1450 DEG C. The wearing resistance of the low-cost aluminum oxide-silicon nitride ceramic lining can be improved.
Description
Technical field
The invention belongs to stupalith field, relate to a kind of aluminum oxide-silicon nitride ceramics lining and preparation method.
Background technology
Be applied in the inner lining material of the dense-medium cyclone of coal separation industry, traditional metal matrix high-abrasive material is too short for work-ing life, and the demand of inadaptable development, has widely used alumina-ceramic lining now.But the fragility of common alumina-ceramic lining is large, wearability general, and work-ing life also has much room for improvement.Therefore, need, under the prerequisite keeping low cost, to improve Al further
2o
3the tough wear-resistant hard of ceramic lined.
Main purpose of the present invention be in original purity be 95% α-Al
2o
3adulterate in ceramic formula basis Si
3n
4second-phase, is improved the wear resistance of alumina-ceramic, develops the composite ceramics that wear resistance is better, be applied in the dense-medium cyclone liner of coal separation industry by control forming method and sintering process.
Summary of the invention
In order to overcome low cost dense-medium cyclone in the deficiency of alumina-ceramic lining wear resistance, the invention provides more excellent composite ceramics lining of a kind of wear resistance and preparation method thereof.
Technical scheme of the present invention and technical characteristic are:
Adopt dry-pressing formed, adjustment forming pressure and dwell time, reduce the void content of base substrate, increase the density of base substrate, contribute to the wear resisting property improving ceramic.
Adopt normal pressure-sintered alumina-ceramic method, and use N
2protection, sintering temperature is at about 1450 DEG C.
The technical thought that ceramic lined composition of the present invention is determined is:
α-Al
2o
3al
2o
3the principal crystalline phase of pottery is the first-selection making high-abrasive material.By doping Si
3n
4second-phase, can improve the wear resistance of alumina-ceramic.
The present invention is the α-Al of 95% with the purity of low cost
2o
3powder is main raw material, is the Si of 3% by the massfraction that adulterates in addition
3n
4second-phase, adopts dry pressure formed, and sinters at ambient pressure, improves the wear resistance of former low cost alumina-ceramic.
Embodiment
(1) with levigate purity be 95% α-Al
2o
3powder is main raw material, adds the Si that massfraction is 3% in addition
3n
4prepare burden, the material prepared is put into ball mill and carries out ball mill mixing 2 hours, spray drying granulation afterwards, cross 40 mesh standard sieves.(2) dry pressing is adopted, forming pressure 6MPa, dwell time 40s.(3) sintering process is carried out in high-temperature atmosphere furnace, and uses N
2protection, sintering temperature is 1450 DEG C.
Claims (1)
1. aluminum oxide-silicon nitride ceramics lining and a preparation method, is characterized in that: purity is the α-Al of 95%
2o
3powder is basic raw material, the Si of doping 3% in addition
3n
4second-phase; Ball milling 2 hours, spray drying granulation, crosses 40 mesh standard sieves; Adopt dry pressing, forming pressure is decided to be 6MPa, pressurize 40s during compressing tablet; Adopt normal pressure-sintered alumina-ceramic method, sintering process carries out in high-temperature atmosphere furnace, and uses N
2protection, sintering temperature is 1450 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071608.8A CN104628366A (en) | 2015-02-11 | 2015-02-11 | Aluminum oxide-silicon nitride ceramic lining and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071608.8A CN104628366A (en) | 2015-02-11 | 2015-02-11 | Aluminum oxide-silicon nitride ceramic lining and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104628366A true CN104628366A (en) | 2015-05-20 |
Family
ID=53207666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510071608.8A Pending CN104628366A (en) | 2015-02-11 | 2015-02-11 | Aluminum oxide-silicon nitride ceramic lining and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104628366A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101520A (en) * | 2017-12-23 | 2018-06-01 | 深圳万佳互动科技有限公司 | Alundum (Al2O3)-composite material of silicon carbide and preparation method thereof |
| EP3816138A4 (en) * | 2018-06-28 | 2022-03-30 | Tokuyama Corporation | Method for producing granules for ceramic production |
-
2015
- 2015-02-11 CN CN201510071608.8A patent/CN104628366A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 杨明辉等: "无压烧结Al2O3/ Si3N4纳米复合陶瓷的力学性能", 《山东陶瓷》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101520A (en) * | 2017-12-23 | 2018-06-01 | 深圳万佳互动科技有限公司 | Alundum (Al2O3)-composite material of silicon carbide and preparation method thereof |
| EP3816138A4 (en) * | 2018-06-28 | 2022-03-30 | Tokuyama Corporation | Method for producing granules for ceramic production |
| JP7137376B2 (en) | 2018-06-28 | 2022-09-14 | 株式会社トクヤマ | Method for manufacturing granules for manufacturing ceramics |
| TWI788579B (en) * | 2018-06-28 | 2023-01-01 | 日商德山股份有限公司 | Method for producing granules for producing ceramics |
| US11884596B2 (en) | 2018-06-28 | 2024-01-30 | Tokuyama Corporation | Method for producing granules for ceramic production |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |