CN104829253A - silicon carbide ceramic with excellent wear resistance and high hardness - Google Patents
silicon carbide ceramic with excellent wear resistance and high hardness Download PDFInfo
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- CN104829253A CN104829253A CN201510184844.0A CN201510184844A CN104829253A CN 104829253 A CN104829253 A CN 104829253A CN 201510184844 A CN201510184844 A CN 201510184844A CN 104829253 A CN104829253 A CN 104829253A
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Abstract
The invention discloses a silicon carbide ceramic with excellent wear resistance and high hardness. The silicon carbide ceramic is prepared form following raw materials, by weight, 70 to 85 parts of silicon carbide, 5 to 7 parts of diatomite powder, 3 to 4 parts of boron powder, 2 to 3 parts of polyvinyl chloride, 5 to 6 parts of titanium carbide, 1 to 2 parts of barium stearate, 15 to 20 parts of absolute ethyl alcohol, 10 to 13 parts of a short carbon fiber pre-dispersed material, 3 to 4 parts of a sintering aid, and 80 to 90 parts of deionized water. According to the preparation method, short carbon fiber is added so as to improve mechanical properties of silicon carbide, improve breaking tenacity of ceramic, improve strength and compactness of ceramic biscuit, and satisfy mechanical processing requirements; boron powder is added so as to increase compactness of the silicon carbide ceramic, reduce material loss, and increase finished product yield; silicon carbide is added so as to improve wear resistance of ceramic further; the preparation method is simple; the raw materials are easily available; hardness and wear resistance of the silicon carbide ceramic are improved obviously; and application range of the silicon carbide ceramic is extended.
Description
Technical field
the present invention relates to high silicon carbide ceramics of the good hardness of a kind of wear resistance and preparation method thereof, belong to technical field of ceramic production.
Background technology
Silicon carbide has excellent mechanical property, high thermal conductivity and good thermal shock resistance etc., and these characteristics make them be used widely in fields such as aerospace, automotive industry and the energy; But the shortcoming of silicon carbide ceramics poor toughness, processing difficulties limits its application.Silicon carbide is a kind of stable compound of typical covalent bonds, add that its spread coefficient is low, very difficult conventional sintering method reaches densification, must by adding some sintering aids to reduce surface energy or to increase surface-area, and special process process be adopted to obtain fine and close silicon carbide ceramics.The present invention improves the compactness of silicon carbide ceramics by adding boron powder, reduce the loss of material, improve yield rate, add the wear resistance that titanium carbide improves pottery, also improving the mechanical property of silicon carbide by introducing chopped carbon fiber, improving the fracture toughness property of material, improve the intensity of biscuit, suppress the generation of various defect in biscuit preparation, meet machining needs.
Summary of the invention
The object of this invention is to provide the silicon carbide ceramics that the good hardness of a kind of wear resistance is high.
In order to realize object of the present invention, the present invention is by following scheme implementation:
The silicon carbide ceramics that the good hardness of wear resistance is high, is made up of the raw material of following weight part: silicon carbide 70-85, diatomite in powder 5-7, boron powder 3-4, polyvinyl chloride 2-3, titanium carbide 5-6, barium stearate 1-2, dehydrated alcohol 15-20, chopped carbon fiber predispersion 10-13, sintering aid 3-4, deionized water 80-90;
Described sintering aid becomes 200-300 order powder by the zirconium boride 99.5004323A8ure of the aluminum oxide of 10-15 weight part, 8-12 weight part, the carbon dust mixed grinding of 15-20 weight part, add the methylene-bisacrylamide of 0.4-0.8 weight part and the ethanolic soln mixing and stirring of 10-15 weight part, heating boils off solvent and be pressed into stock under 10-15MPa, then under 600-800 ° of C, is dried and crushed into 150-200 order powder.
The preparation method of chopped carbon fiber predispersion of the present invention is: be cut to length at 1-3mm by short for carbon fiber, low-temperature oxidation 1-2 hour under 500-600 ° of C, being immersed volume ratio is again in the dust technology of 3:7 and the mixing solutions of acetone, soak after 1-2 days and repeatedly rinse surface with deionized water until solution is in neutral, sol-gel method is adopted to form zirconia coating at carbon fiber surface after drying, again this carbon fiber is immersed in the water completely, ultrasonic wave dispersion 10-20 minute, add the OP-10 emulsifying agent of carbon fiber 0.3-0.5 times weight part again, continue ultrasonic disperse 1-2 hour.
The silicon carbide ceramics that the good hardness of a kind of wear resistance of the present invention is high, be made up of following concrete steps:
(1) mixing of silicon carbide, boron powder, diatomite in powder, titanium carbide, barium stearate and deionized water is added in ball grinder, with high-purity alpha-alumina abrading-ball ball milling 2-3 hour, add all the other remaining compositions except chopped carbon fiber predispersion again and carry out wet-mixed with the rotating speed of 300-400 rev/min, mixing 1-2 hour;
(2) chopped carbon fiber predispersion is added in step (1), rotating speed is reduced to 100-200 rev/min, continue ball milling 1-2 hour, the slurry mixed at room temperature is bled and is slowly added in metal die, then be placed in insulation can under 80 ° of C, be incubated 30-50 minute after the demoulding, at room temperature seasoning no longer reduces to weight;
(3) inserted in reaction sintering stove by the ceramics biscuits of carbonized bricks that step (2) obtains, vacuumized by sintering oven, be warming up to 1600-1700 ° of C with 20-25 ° of C/min, constant temperature keeps 3-5 hour, and sample furnace cooling can obtain.
Advantage of the present invention is: the chopped carbon fiber that the present invention adds improves the mechanical property of silicon carbide, improve the fracture toughness property of pottery, improve intensity and the density of biscuit, meet machining needs, the boron powder added improves the compactness of silicon carbide ceramics, decrease the loss of material, improve yield rate, the titanium carbide added improves the wear resistance of pottery further, present invention process is simple, raw material sources are convenient, and significantly improve hardness and the wear resisting property of silicon carbide ceramics, expand the use range of silicon carbide ceramics.
specific embodiments
Below by specific examples, the present invention is described in detail.
The silicon carbide ceramics that the good hardness of wear resistance is high, is made up of the raw material of following weight part (kilogram): silicon carbide 85, diatomite in powder 7, boron powder 3, polyvinyl chloride 3, titanium carbide 6, barium stearate 2, dehydrated alcohol 20, chopped carbon fiber predispersion 13, sintering aid 3, deionized water 90;
Described sintering aid becomes 300 order powder by the zirconium boride 99.5004323A8ure of the aluminum oxide of 15 weight parts, 8 weight parts, the carbon dust mixed grinding of 18 weight parts, add the methylene-bisacrylamide of 0.6 weight part and the ethanolic soln mixing and stirring of 15 weight parts, heating boils off solvent and be pressed into stock under 12MPa, then under 700 ° of C, is dried and crushed into 200 order powder.
The preparation method of chopped carbon fiber predispersion of the present invention is: be cut to length at 3mm by short for carbon fiber, low-temperature oxidation 2 hours under 600 ° of C, being immersed volume ratio is again in the dust technology of 3:7 and the mixing solutions of acetone, soak after 1 day and repeatedly rinse surface with deionized water until solution is in neutral, sol-gel method is adopted to form zirconia coating at carbon fiber surface after drying, again this carbon fiber is immersed in the water completely, ultrasonic wave disperses 20 minutes, add the OP-10 emulsifying agent of carbon fiber 0.5 times of weight part again, continue ultrasonic disperse 2 hours.
The silicon carbide ceramics that the good hardness of a kind of wear resistance of the present invention is high, be made up of following concrete steps:
(1) mixing of silicon carbide, boron powder, diatomite in powder, titanium carbide, barium stearate and deionized water is added in ball grinder, with high-purity alpha-alumina abrading-ball ball milling 3 hours, add all the other remaining compositions except chopped carbon fiber predispersion again and carry out wet-mixed with the rotating speed of 400 revs/min, mix 2 hours;
(2) chopped carbon fiber predispersion is added in step (1), rotating speed is reduced to 200 revs/min, continue ball milling 2 hours, the slurry mixed at room temperature is bled and is slowly added in metal die, then be placed in insulation can under 80 ° of C, be incubated 40 minutes after the demoulding, at room temperature seasoning no longer reduces to weight;
(3) inserted in reaction sintering stove by the ceramics biscuits of carbonized bricks that step (2) obtains, vacuumized by sintering oven, be warming up to 1600 ° of C with 20 ° of C/min, constant temperature keeps 4 hours, and sample furnace cooling can obtain.
In the present embodiment, the performance index result of pottery is as follows:
Hardness (GPa): 37.3;
Young's modulus (GPa): 400;
Folding strength (MPa): 230;
Fracture toughness property (Mpa/m
1/2): 5.21;
Thermal expansivity (10
-5/ K): 3.2;
Thermal conductivity (W/mK): 90.
Claims (3)
1. the silicon carbide ceramics that the good hardness of wear resistance is high, it is characterized in that, be made up of the raw material of following weight part: silicon carbide 70-85, diatomite in powder 5-7, boron powder 3-4, polyvinyl chloride 2-3, titanium carbide 5-6, barium stearate 1-2, dehydrated alcohol 15-20, chopped carbon fiber predispersion 10-13, sintering aid 3-4, deionized water 80-90;
Described sintering aid becomes 200-300 order powder by the zirconium boride 99.5004323A8ure of the aluminum oxide of 10-15 weight part, 8-12 weight part, the carbon dust mixed grinding of 15-20 weight part, add the methylene-bisacrylamide of 0.4-0.8 weight part and the ethanolic soln mixing and stirring of 10-15 weight part, heating boils off solvent and be pressed into stock under 10-15MPa, then under 600-800 ° of C, is dried and crushed into 150-200 order powder.
2. the silicon carbide ceramics that the good hardness of a kind of wear resistance is high according to claim 1, it is characterized in that, the preparation method of described chopped carbon fiber predispersion is: be cut to length at 1-3mm by short for carbon fiber, low-temperature oxidation 1-2 hour under 500-600 ° of C, being immersed volume ratio is again in the dust technology of 3:7 and the mixing solutions of acetone, soak after 1-2 days and repeatedly rinse surface with deionized water until solution is in neutral, sol-gel method is adopted to form zirconia coating at carbon fiber surface after drying, again this carbon fiber is immersed in the water completely, ultrasonic wave dispersion 10-20 minute, add the OP-10 emulsifying agent of carbon fiber 0.3-0.5 times weight part again, continue ultrasonic disperse 1-2 hour.
3. the silicon carbide ceramics that the good hardness of a kind of wear resistance is high according to claim 1, is characterized in that, be made up of following concrete steps:
(1) mixing of silicon carbide, boron powder, diatomite in powder, titanium carbide, barium stearate and deionized water is added in ball grinder, with high-purity alpha-alumina abrading-ball ball milling 2-3 hour, add all the other remaining compositions except chopped carbon fiber predispersion again and carry out wet-mixed with the rotating speed of 300-400 rev/min, mixing 1-2 hour;
(2) chopped carbon fiber predispersion is added in step (1), rotating speed is reduced to 100-200 rev/min, continue ball milling 1-2 hour, the slurry mixed at room temperature is bled and is slowly added in metal die, then be placed in insulation can under 80 ° of C, be incubated 30-50 minute after the demoulding, at room temperature seasoning no longer reduces to weight;
(3) inserted in reaction sintering stove by the ceramics biscuits of carbonized bricks that step (2) obtains, vacuumized by sintering oven, be warming up to 1600-1700 ° of C with 20-25 ° of C/min, constant temperature keeps 3-5 hour, and sample furnace cooling can obtain.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550949A (en) * | 2019-08-07 | 2019-12-10 | 福建省德化真泰尔陶瓷有限公司 | Formula and production process of wear-resistant high-hardness ceramic |
| CN114653461A (en) * | 2022-05-19 | 2022-06-24 | 佛山市陶莹新型材料有限公司 | Continuous production equipment and production method of nano ceramic material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560104A (en) * | 2009-05-12 | 2009-10-21 | 宁波欧翔精细陶瓷技术有限公司 | Preparation method for silicon carbide ceramic tube or rod |
| CN103204693A (en) * | 2013-03-12 | 2013-07-17 | 北京理工大学 | Preparation method for short carbon fiber/silicon carbide composites |
| CN104211422A (en) * | 2014-09-09 | 2014-12-17 | 南京工业大学 | SiC porous ceramic material and preparation method thereof |
-
2015
- 2015-04-20 CN CN201510184844.0A patent/CN104829253A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560104A (en) * | 2009-05-12 | 2009-10-21 | 宁波欧翔精细陶瓷技术有限公司 | Preparation method for silicon carbide ceramic tube or rod |
| CN103204693A (en) * | 2013-03-12 | 2013-07-17 | 北京理工大学 | Preparation method for short carbon fiber/silicon carbide composites |
| CN104211422A (en) * | 2014-09-09 | 2014-12-17 | 南京工业大学 | SiC porous ceramic material and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 曲远方: "《现代陶瓷材料及技术》", 31 May 2008, 华东理工大学出版社 * |
| 理查德J.布鲁克: "《陶瓷工艺》", 30 June 1999, 科学出版社 * |
| 高峡等: "《食品接触材料化学成分与安全》", 30 April 2014, 北京科学技术出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550949A (en) * | 2019-08-07 | 2019-12-10 | 福建省德化真泰尔陶瓷有限公司 | Formula and production process of wear-resistant high-hardness ceramic |
| CN114653461A (en) * | 2022-05-19 | 2022-06-24 | 佛山市陶莹新型材料有限公司 | Continuous production equipment and production method of nano ceramic material |
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