CN101591187A - High strength silicon nitride combined silicon carbide material and preparation method thereof - Google Patents
High strength silicon nitride combined silicon carbide material and preparation method thereof Download PDFInfo
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- CN101591187A CN101591187A CNA2009100478332A CN200910047833A CN101591187A CN 101591187 A CN101591187 A CN 101591187A CN A2009100478332 A CNA2009100478332 A CN A2009100478332A CN 200910047833 A CN200910047833 A CN 200910047833A CN 101591187 A CN101591187 A CN 101591187A
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- silicon carbide
- high strength
- silicon nitride
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Abstract
The present invention relates to technical field of refractory materials, relate in particular to a kind of high strength silicon nitride combined silicon carbide material and preparation method thereof, by following weight percent raw material: 76～86% SiC, 10～20% Si, the La of 0.1-1%
2O
3And Y
2O
3Mixture, and wooden calcium sulfonate's paper pulp of 2～4% forms by following prepared: take by weighing raw material; Raw material is mixed into pug; Be pressed into green compact then; Put into resistance furnace again, with 100-150 ℃, the dry biscuit that gets; In nitrogen atmosphere,, fire 8～16h and get finished product again with 1400～1480 ℃.The present invention compares with prior art, relies on rare earth oxide to promote β-Si
3N
4Generate, ultrafine powder effect acceleration of sintering improves product properties simultaneously, and especially product strength reaches 300MPa, is 1.5 times of like product, is 3 times of traditional silicon carbide like product.
Description
[technical field]
The present invention relates to technical field of refractory materials, relate in particular to a kind of high strength silicon nitride combined silicon carbide material and preparation method thereof.
[background technology]
At present most of traditional silicon carbide products ubiquity the deficiency of physics, chemical property, the phenomenon that the life-span is not long, and silicon nitride combined silicon carbide material adopts synthetic SiC particle to add industrial silica fume usually, the down logical N of high temperature
2Gas is pressed 2N
2+ 3Si → Si
3N
4Reaction, combining closely with the SiC particle forms, and the physical strength that the corrosion resistance of this material chemical property should physical properties, wear resistance are all than traditional carbofrax material; Therefore the heat conduction of high-temperature behavior simultaneously obtained to use widely, as the blast furnace lining of metallurgy industry, and the aluminium cell of coloured industry, the burner nozzle of chemical industry and the kiln furnitures of various Industrial Stoves.
[summary of the invention]
The objective of the invention is to promote prior art, in raw material, added rare earth material, further improved the performance of goods, especially physical strength.
For achieving the above object, the present invention proposes a kind of high strength silicon nitride combined silicon carbide material, it is characterized in that forming: 76～86% SiC, 10～20% Si, the La of 0.1-1% by following weight percent feedstock production
2O
3And Y
2O
3Mixture, and wooden calcium sulfonate's paper pulp of 2～4%.
A kind of preparation method of high strength silicon nitride combined silicon carbide material, it is characterized in that comprising being prepared as follows step: (1) takes by weighing above-mentioned weight percent raw material; (2) mix: raw material is adopted planetary-type mixer,, behind mixing 30～50min, make pug with 10～40 ℃; (3) green compact moulding:, obtain green compact with pug compression moulding; (4) drying: green compact are put into resistance furnace,, obtain biscuit after dry 20-30 hour with 100-150 ℃; (5) burn till: adopt resistance furnace, in nitrogen atmosphere,, fire 8～16h, make finished product with 1400～1480 ℃.
Described green compact moulding is to adopt the vibrations press, and the vibrating forming time is 5～20s.
Compare with prior art, the high strength silicon nitride combined silicon carbide material that prepared of the present invention goes out relies on rare earth oxide to promote β-Si
3N
4Generate, ultrafine powder effect acceleration of sintering improves product properties simultaneously, and especially product strength reaches 300Mpa, is 1.5 times of like product, is 3 times of traditional silicon carbide like product.
[specific embodiment]
Take by weighing following weight percent raw material:
SiC 82.3％
Si 14.7％
La
2O
3+ Y
2O
3Mixture 0.2%
Wooden calcium sulfonate's pulping liquor 2.8%
Mix: above-mentioned raw materials is put into planetary-type mixer, and mixing temperature is 20 ℃, and mixing time is 30min.
The green compact moulding: adopt the vibrations press, molding time is 15s.
Dry: above-mentioned green compact are put into resistance furnace, and with 110 ℃, dry 24h obtains biscuit.
Burn till: biscuit is put into resistance furnace, in nitrogen atmosphere,, fire 10h, obtain the high strength silicon nitride combined silicon carbide material of following performance with 1400 ℃:
SiC 72.17％
Si
3N
4 21.94％
Fe
2O
3 0.40％
Apparent porosity 13%
Volume density 2.78g/cm
3
Cold crushing strength 286MPa
High temperature break resistant intensity 53Mpa
Claims (3)
1. a high strength silicon nitride combined silicon carbide material is characterized in that being formed by following weight percent feedstock production: 76～86% SiC, 10～20% Si, the La of 0.1-1%
2O
3And Y
2O
3Mixture, and wooden calcium sulfonate's paper pulp of 2～4%.
2. the preparation method of a high strength silicon nitride combined silicon carbide material, it is characterized in that comprising being prepared as follows step: (1) takes by weighing above-mentioned weight percent raw material; (2) mix: raw material is adopted planetary-type mixer,, behind mixing 30～50min, make pug with 10～40 ℃; (3) green compact moulding:, obtain green compact with pug compression moulding; (4) drying: green compact are put into resistance furnace,, obtain biscuit after dry 20-30 hour with 100-150 ℃; (5) burn till: adopt resistance furnace, in nitrogen atmosphere,, fire 8～16h, make finished product with 1400～1480 ℃.
3. the preparation method of a kind of high strength silicon nitride combined silicon carbide material according to claim 2 is characterized in that: described green compact moulding is to adopt the vibrations press, and the vibrating forming time is 5～20s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100478332A CN101591187A (en) | 2009-03-19 | 2009-03-19 | High strength silicon nitride combined silicon carbide material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100478332A CN101591187A (en) | 2009-03-19 | 2009-03-19 | High strength silicon nitride combined silicon carbide material and preparation method thereof |
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| CN101591187A true CN101591187A (en) | 2009-12-02 |
Family
ID=41406093
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| CNA2009100478332A Pending CN101591187A (en) | 2009-03-19 | 2009-03-19 | High strength silicon nitride combined silicon carbide material and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891486A (en) * | 2010-06-23 | 2010-11-24 | 马鞍山钢铁股份有限公司 | High thermal conductivity Sialon-SiC complex phase ceramic fireproof material for dry coke quenching furnace and production method thereof |
| CN102010204A (en) * | 2010-10-22 | 2011-04-13 | 北方民族大学 | Colloidal forming process method for preparing silicon nitride bonded silicon carbide composite ceramic |
| CN102408242A (en) * | 2011-08-19 | 2012-04-11 | 武汉科技大学 | Composite ceramic cushion block for hot rolling walking beam reheating furnace and preparation method thereof |
| CN102718506A (en) * | 2011-03-31 | 2012-10-10 | 上海宝钢工业检测公司 | Refractory composition for pure hydrogen atmosphere high temperature furnace |
| CN104045350A (en) * | 2013-03-11 | 2014-09-17 | 中国科学院上海硅酸盐研究所 | Method for preparing silicon nitride /silicon carbide ceramic composite by use of reaction sintering process |
| CN106083055A (en) * | 2016-06-08 | 2016-11-09 | 武汉钢铁股份有限公司 | A kind of annular furnace Si N Al C complex fire resistant ceramics furnace base plate and preparation method |
| CN107540383A (en) * | 2017-08-23 | 2018-01-05 | 中国人民解放军海军工程大学 | The preparation method of silicon nitride combined silicon carbide refractory with double dispersing characteristics |
| CN109608209A (en) * | 2018-12-21 | 2019-04-12 | 郑州安联凯实业有限公司 | A kind of production method of high thermal conductivity high abrasion refractory material |
| CN111892403A (en) * | 2020-08-03 | 2020-11-06 | 福赛特(唐山)新材料有限公司 | High-temperature anti-bending silicon nitride combined silicon carbide slab and preparation method thereof |
| RU2740392C1 (en) * | 2019-10-22 | 2021-01-13 | федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный технологический университет им. В.Г. Шухова" | Method of producing silicon carbide refractories |
-
2009
- 2009-03-19 CN CNA2009100478332A patent/CN101591187A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891486A (en) * | 2010-06-23 | 2010-11-24 | 马鞍山钢铁股份有限公司 | High thermal conductivity Sialon-SiC complex phase ceramic fireproof material for dry coke quenching furnace and production method thereof |
| CN102010204A (en) * | 2010-10-22 | 2011-04-13 | 北方民族大学 | Colloidal forming process method for preparing silicon nitride bonded silicon carbide composite ceramic |
| CN102010204B (en) * | 2010-10-22 | 2013-01-30 | 北方民族大学 | Colloidal forming process method for preparing silicon nitride bonded silicon carbide composite ceramic |
| CN102718506A (en) * | 2011-03-31 | 2012-10-10 | 上海宝钢工业检测公司 | Refractory composition for pure hydrogen atmosphere high temperature furnace |
| CN102408242A (en) * | 2011-08-19 | 2012-04-11 | 武汉科技大学 | Composite ceramic cushion block for hot rolling walking beam reheating furnace and preparation method thereof |
| CN104045350A (en) * | 2013-03-11 | 2014-09-17 | 中国科学院上海硅酸盐研究所 | Method for preparing silicon nitride /silicon carbide ceramic composite by use of reaction sintering process |
| CN106083055A (en) * | 2016-06-08 | 2016-11-09 | 武汉钢铁股份有限公司 | A kind of annular furnace Si N Al C complex fire resistant ceramics furnace base plate and preparation method |
| CN107540383A (en) * | 2017-08-23 | 2018-01-05 | 中国人民解放军海军工程大学 | The preparation method of silicon nitride combined silicon carbide refractory with double dispersing characteristics |
| CN107540383B (en) * | 2017-08-23 | 2019-10-08 | 中国人民解放军海军工程大学 | The preparation method of silicon nitride combined silicon carbide refractory with double dispersing characteristics |
| CN109608209A (en) * | 2018-12-21 | 2019-04-12 | 郑州安联凯实业有限公司 | A kind of production method of high thermal conductivity high abrasion refractory material |
| RU2740392C1 (en) * | 2019-10-22 | 2021-01-13 | федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный технологический университет им. В.Г. Шухова" | Method of producing silicon carbide refractories |
| CN111892403A (en) * | 2020-08-03 | 2020-11-06 | 福赛特(唐山)新材料有限公司 | High-temperature anti-bending silicon nitride combined silicon carbide slab and preparation method thereof |
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Open date: 20091202 |