CN108503384A - Coat of silicon carbide modified multiwalled carbon nanotube enhances Si-B-C-N ceramic composite material and preparation method thereof - Google Patents
Coat of silicon carbide modified multiwalled carbon nanotube enhances Si-B-C-N ceramic composite material and preparation method thereof Download PDFInfo
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Abstract
The present invention provides a kind of coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material and preparation method thereof, and method is, by silica flour, graphite powder and hexagonal boron nitride powder in molar ratio 2:3:1 is added in high energy ball mill, carries out ball milling under protection of argon gas, obtains amorphous Si-B-C-N powder；The effective polysilazane of multi-wall carbon nano-tube is coated, carries out high-temperature process after drying under protection of argon gas；Amorphous Si-B-C-N powder and coat of silicon carbide modified multiwalled carbon nanotube are subjected to planetary ball mill and obtain finely dispersed mixed powder；Mixed powder is subjected to discharge plasma sintering, obtain coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material, and this material is made of 95 99 parts of Si-B-C-N amorphous powders of volume fraction and 15 parts of coat of silicon carbide modified multiwalled carbon nanotubes, compared with the prior art, the material that prepared by the present invention has good oxidation resistance and very high intensity and fracture toughness.
Description
Technical field
The present invention relates to high temperature resistant structure ceramics technical fields, and in particular to a kind of coat of silicon carbide is modified multi wall carbon and receives
Mitron enhances Si-B-C-N ceramic composite material and preparation method thereof.
Background technology
Silicon substrate non-oxidized substance high temperature resistant structure ceramics such as silicon carbide, silicon nitride and silicon-carbon nitrogen are due to preferable high
Temperature stability and mechanical property and receive significant attention.In recent years, a kind of quaternary Si-B-C-N ceramic is because it is in non-oxidizing atmosphere
Under superior heat-stability (still keeping noncrystalline state at 1800 DEG C), even up to 2000 DEG C sometimes.Largely studies have shown that silicon
The high-temperature oxidation resistance of B-C-N ceramic is even more better than traditional structure ceramics.Traditional preparation method is to be cracked using presoma
Mode prepares Si-B-C-N ceramic, but presoma cracking mode one side complex process, raw material are expensive；Another aspect forerunner
Ceramic recovery rate prepared by body cracking process is generally 70-80wt%, cannot directly obtain ceramic of compact.Therefore, it studies alternative
Presoma cracking process prepares high performance silicon B-C-N ceramic and is very important to the further development of high-temperature structural ceramics.
Currently, it is with silica flour, graphite powder and hexagonal boron nitride powder to use high-energy ball milling method to prepare Si-B-C-N composite ceramics
For raw material, amorphous silicon B-C-N ceramic powder is obtained by mechanical alloying high-energy ball milling, and then using hot pressing or electric discharge etc.
Gas ions are sintered to obtain compact block Si-B-C-N ceramic.Although preparing Si-B-C-N composite ceramics using mechanical alloying method to have
Have the advantages that technological process is simple and yield is high, but Si-B-C-N ceramic prepared by mechanical alloying method combination high temperature sintering is still
There are purity and uniform texture the precursor synthesis method methods that cannot match in excellence or beauty completely to prepare Si-B-C-N material etc. and keep in check.Therefore,
The room temperature intensity of 1800 DEG C of plasma sintering Si-B-C-N ceramics is only 64.80 ± 6.83MPa, and fracture toughness is 0.72 ±
0.15MPa·m1/2.Flexural strength is 200MPa or so, fracture toughness 2-3MPam when sintering temperature is 1900 DEG C1/2, still
Less than the performance of the ceramics such as silicon carbide, silicon nitride.In addition, the method prepare Si-B-C-N ceramic thermal shock resistance also need into
One step improves.
In view of drawbacks described above, creator of the present invention proposes the present invention by prolonged research and practice.
Invention content
Present invention seek to address that existing Si-B-C-N ceramic composite material poor toughness, it still needs further improvement for thermal shock resistance
The problems such as, the present invention provides a kind of preparation of coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material
Method comprising following steps：
The first step：Silica flour, graphite powder and hexagonal boron nitride powder are added in high energy ball mill, carry out ball under protection of argon gas
Mill, ball material mass ratio are 15-25:1, ball radius 8-12mm obtain amorphous Si-B-C-N powder；
Second step：The effective polysilazane of multi-wall carbon nano-tube is coated, is carried out at high temperature under protection of argon gas after drying
Reason；
Third walks：The amorphous Si-B-C-N powder obtained in 95-99 parts of steps 1 and 1-5 parts of steps 2 are weighed by volume fraction
Obtained coat of silicon carbide modified multiwalled carbon nanotube, then mixes through planetary ball mill, and ball material mass ratio is 15-25:1, abrading-ball
A diameter of 8-12mm, absolute ethyl alcohol are decentralized medium, obtain finely dispersed mixed powder；
4th step：The mixed powder that third is walked carries out discharge plasma sintering, obtains coat of silicon carbide modification
The Si-B-C-N ceramic composite material of multi-walled carbon nanotube enhancing.
Preferably, the grain size of silica flour described in the first step, the graphite and the hexagonal boron nitride three is no more than 20 μ
m。
Preferably, the purity of the silica flour, the graphite and the hexagonal boron nitride three is 99-99.9%.
Preferably, the condition of ball milling described in the first step is, Ball-milling Time 18-22h, master rotating speed is 300-350r/
Min, ball grinder relative rotation speed are 625-675r/min.
Preferably, the molar ratio of silicon in obtained amorphous Si-B-C-N powder in the first step, carbon, boron is 2:3:1.
Preferably, coated described in second step the specific steps are carry out 25-35min under the conditions of ultrasonic agitation.
Preferably, the condition of drying and high-temperature process described in second step is, it is 95-105 DEG C of drying and processing 22- in temperature
26h, and it is heat-treated 1.5-3.5h at being 1200-1400 DEG C in temperature.
Preferably, the condition that third walks the ball milling is, Ball-milling Time 3-7h, planetary ball mill rotating speed is 250-
350r/min。
Preferably, the condition that discharge plasma described in the 4th step is sintered is, under nitrogen protection effect, it is in temperature
1800-2000 DEG C, under the conditions of pressure is 30-50MPa, it is sintered 5-10min.
A kind of coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material.
Compared with the prior art, the beneficial effects of the present invention are：
1, the present invention prepare coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material due to
Its surface oxidation forms the extraneous oxygen of fine and close silicon dioxide layer isolation and further invades, and making it at high temperature has well
Oxidation resistance；
2, coat of silicon carbide changes surname multi-walled carbon nanotube and the Interface adhesive strength of ceramic matrix is improved, and ensure that
Effective transmission of load between carbon nanotube and ceramic matrix；
3, the introducing of coat of silicon carbide multi-walled carbon nanotube, makes Si-B-C-N ceramic composite material by severe thermal shock
The ability that crackle is formed and extended caused by thermal stress is resisted in the process to significantly improve, and then improves intensity and the fracture of material
Toughness；
Description of the drawings
It, below will be to embodiment or description of the prior art for the clearer technical solution illustrated in the embodiment of the present invention
Needed in attached drawing be briefly described.It is clear that following attached drawing is the section Example of the present invention, for ability
For the those of ordinary skill of domain, it is also possible to obtain other relevant informations by attached drawing.
Fig. 1 be the embodiment of the present invention 1 described in multi-walled carbon nanotube by coat of silicon carbide before modified after scanning electron microscope
Comparison diagram；
Fig. 2 be the embodiment of the present invention 1 described in multi-walled carbon nanotube by coat of silicon carbide before modified after transmission electron microscope
Comparison diagram；
Fig. 3 be the embodiment of the present invention 1 described in multi-walled carbon nanotube by coat of silicon carbide before modified after thermogravimetric comparison
Figure；
Fig. 4 be the embodiment of the present invention 1 described in multi-walled carbon nanotube by coat of silicon carbide before modified after X-ray diffraction
Comparison diagram；
Fig. 5 is the scanning of Si-B-C-N powder before and after introducing silicon carbide modified multiwalled carbon nanotube in the embodiment of the present invention 1
Electron microscope；
Fig. 6 is the transmission of Si-B-C-N powder before and after introducing silicon carbide modified multiwalled carbon nanotube in the embodiment of the present invention 1
Electron microscope.
Specific implementation mode
With reference to embodiments, the forgoing and additional technical features and advantages are described in more detail.
Embodiment 1
The present embodiment provides a kind of coat of silicon carbide modified multiwalled carbon nanotubes to enhance Si-B-C-N ceramic composite material
Preparation method comprising following steps：
The first step：Silica flour, graphite powder and hexagonal boron nitride powder are added in high energy ball mill, carry out ball under protection of argon gas
Mill, ball material mass ratio are 20:1, ball radius 10mm, Ball-milling Time 20h, master rotating speed are 325r/min, ball grinder phase
It is 650r/min to rotating speed, obtains amorphous Si-B-C-N powder, and the molar ratio of silicon in amorphous Si-B-C-N powder, carbon, boron is
2:3:1, wherein the grain size of the silica flour, the graphite and the hexagonal boron nitride three no more than 20 μm, the silica flour,
The purity of the graphite and the hexagonal boron nitride three are 99-99.9%；
Second step：The effective polysilazane of multi-wall carbon nano-tube is coated, is added under protection of argon gas using tubular type after drying
Hot stove carries out high-temperature process, and specific steps are, 30min is carried out under the conditions of ultrasonic agitation, then in 100 DEG C of drying and processings
For 24 hours, finally under argon atmosphere 2h is heat-treated at 1200 DEG C of temperature；
Third walks：The amorphous Si-B-C-N powder obtained in 97-99 parts of steps 1 and 1-3 parts of steps 2 are weighed by volume fraction
Obtained coat of silicon carbide modified multiwalled carbon nanotube, then mixes through planetary ball mill, and ball material mass ratio is 20:1, ball radius
For 10mm, Ball-milling Time 4h, planetary ball mill rotating speed is 300r/min, and absolute ethyl alcohol is decentralized medium, is uniformly dispersed
Mixed powder；
4th step：The mixed powder that third is walked carries out discharge plasma sintering, obtains coat of silicon carbide modification
The Si-B-C-N ceramic composite material of multi-walled carbon nanotube enhancing, wherein sintering condition are, under nitrogen protection effect, in temperature
It is 1900 DEG C, under the conditions of pressure is 40MPa, is sintered 5min.
The Si-B-C-N ceramic composite material of coat of silicon carbide modified multiwalled carbon nanotube enhancing obtained by the present embodiment
Bending strength is 305.1-540.0MPa, hardness 4.5-5.5GPa, fracture toughness 3.01-6.66MPam1/2。
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are referred to,
Fig. 1 be the present embodiment described in multi-walled carbon nanotube by coat of silicon carbide before modified after scanning electron microscope comparison
Figure；
Fig. 2 be the present embodiment described in multi-walled carbon nanotube by coat of silicon carbide before modified after transmission electron microscope comparison
Figure；
Fig. 3 be the present embodiment described in multi-walled carbon nanotube by coat of silicon carbide before modified after thermogravimetric comparison diagram；
Fig. 4 be the present embodiment described in multi-walled carbon nanotube by coat of silicon carbide before modified after X-ray diffraction comparison
Figure.
By attached drawing as can be seen that coat of silicon carbide modified multiwalled carbon nanotube manufactured in the present embodiment is on macro morphology
Significant change does not occur, but nano thickness coat of silicon carbide has been formed in multi-wall carbon nano-tube pipe surface, and then makes this hair
The material of bright preparation has good oxidation resistance (peak oxidation temperature is improved by 580.1 DEG C to 719.5 DEG C).
Fig. 5 is referred to,
Fig. 5 is the scanning electron microscope of Si-B-C-N powder before and after introducing silicon carbide modified multiwalled carbon nanotube in the present embodiment
Figure.
By attached drawing as can be seen that multi-walled carbon nanotube may be implemented more uniform point in nano amorphous Si-B-C-N powder
It dissipates.
Fig. 6 is referred to,
Fig. 6 is the transmission electron microscope of Si-B-C-N powder before and after introducing silicon carbide modified multiwalled carbon nanotube in the present embodiment
Figure.
By attached drawing as can be seen that part multi-wall carbon nano-tube tube end cap is also embedded in silicon-carbide particle, so as to fully
The Strengthening and Toughening effect for playing multi-walled carbon nanotube, makes multi-walled carbon nanotube and ceramic matrix in Si-B-C-N ceramic after sintering
With stronger interface binding power.
Therefore, the coat of silicon carbide modified multiwalled carbon nanotube that prepared by present invention enhancing Si-B-C-N ceramic composite material by
The extraneous oxygen of fine and close silicon dioxide layer isolation is formed in its surface oxidation further to invade, making it at high temperature has very well
Oxidation resistance；Coat of silicon carbide changes surname multi-walled carbon nanotube and the Interface adhesive strength of ceramic matrix is improved, and protects
Effective transmission of load between carbon nanotube and ceramic matrix is demonstrate,proved；The introducing of coat of silicon carbide multi-walled carbon nanotube makes silicon boron
It is aobvious that C-N ceramic composite material resists the ability that crackle caused by thermal stress is formed and extended during by severe thermal shock
It writes and improves, and then improve the intensity and fracture toughness of material, specifically, the crucial thermal shock temperature of Si-B-C-N ceramic material
It is improved to 733 DEG C or more by traditional 451 DEG C, residual strength reaches 193MPa after 1000 DEG C of thermal shocks, compared with the remnants of original material
Intensity 93MPa improves 107%.
Embodiment 2
It is in place of the present embodiment and the difference of embodiment 1, sintering condition is described in the 4th step, is acted in nitrogen protection
Under, it is 2000 DEG C in temperature, under the conditions of pressure is 40MPa, is sintered 5min.
The Si-B-C-N ceramic composite material of coat of silicon carbide modified multiwalled carbon nanotube enhancing obtained by the present embodiment
Bending strength is 380.0-615.0MPa, hardness 3.5-4.8GPa, fracture toughness 5.23-7.16MPam1/2。
Embodiment 3
It is in place of the present embodiment and the difference of embodiment 1, sintering condition is described in the 4th step, is acted in nitrogen protection
Under, it is 1900 DEG C in temperature, under the conditions of pressure is 40MPa, is sintered 10min.
The Si-B-C-N ceramic composite material of coat of silicon carbide modified multiwalled carbon nanotube enhancing obtained by the present embodiment
Bending strength is 480.0-620.0MPa, hardness 3.8-5.5GPa, fracture toughness 5.10-7.10MPam1/2。
Embodiment 4
It is in place of the present embodiment and the difference of embodiment 1, third step becomes, and 95-97 parts of steps 1 are weighed by volume fraction
In the coat of silicon carbide modified multiwalled carbon nanotube that is obtained with 3-5 parts of steps 2 of obtained amorphous Si-B-C-N powder, then through row
Star ball milling mixing, ball material mass ratio are 15:1, ball radius 8mm, Ball-milling Time 5h, planetary ball mill rotating speed are 300r/
Min, absolute ethyl alcohol are decentralized medium, obtain finely dispersed mixed powder, other same as Example 1.
The Si-B-C-N ceramic composite material of coat of silicon carbide modified multiwalled carbon nanotube enhancing obtained by the present embodiment
Bending strength is 450.0-610.0MPa, hardness 3.0-4.5GPa, fracture toughness 4.5-6.96MPam1/2。
Embodiment 5
It is in place of the present embodiment and the difference of embodiment 4, sintering condition is described in the 4th step, is acted in nitrogen protection
Under, it is 2000 DEG C in temperature, under the conditions of pressure is 40MPa, is sintered 5min.
The Si-B-C-N ceramic composite material of coat of silicon carbide modified multiwalled carbon nanotube enhancing obtained by the present embodiment
Bending strength is 400.0-618.0MPa, hardness 3.0-4.5GPa, fracture toughness 5.23-7.10MPam1/2。
Embodiment 6
It is in place of the present embodiment and the difference of embodiment 4, sintering condition is described in the 4th step, is acted in nitrogen protection
Under, it is 1900 DEG C in temperature, under the conditions of pressure is 40MPa, is sintered 10min.
The Si-B-C-N ceramic composite material of coat of silicon carbide modified multiwalled carbon nanotube enhancing obtained by the present embodiment
Bending strength is 485.0-620.0MPa, hardness 4.3-5.2GPa, fracture toughness 5.70-7.16MPam1/2。
Embodiment 7
The present embodiment provides a kind of coat of silicon carbide modified multiwalled carbon nanotubes to enhance Si-B-C-N ceramic composite material
Preparation method comprising following steps：
The first step：Silica flour, graphite powder and hexagonal boron nitride powder are added in high energy ball mill, carry out ball under protection of argon gas
Mill, ball material mass ratio are 15:1, ball radius 8mm, Ball-milling Time 18h, master rotating speed are 300r/min, and ball grinder is opposite
Rotating speed is 625r/min, obtains amorphous Si-B-C-N powder, and the molar ratio of silicon in amorphous Si-B-C-N powder, carbon, boron is 2:
3:1, wherein the grain size of the silica flour, the graphite and the hexagonal boron nitride three is no more than 20 μm, the silica flour, institute
The purity for stating graphite and the hexagonal boron nitride three is 99-99.9%；
Second step：The effective polysilazane of multi-wall carbon nano-tube is coated, is added under protection of argon gas using tubular type after drying
Hot stove carries out high-temperature process, and specific steps are, 25min is carried out under the conditions of ultrasonic agitation, then in 95 DEG C of drying and processings
22h is finally heat-treated 1.5h under argon atmosphere at 1200 DEG C of temperature；
Third walks：The amorphous Si-B-C-N powder obtained in 97-99 parts of steps 1 and 1-3 parts of steps 2 are weighed by volume fraction
Obtained coat of silicon carbide modified multiwalled carbon nanotube, then mixes through planetary ball mill, and ball material mass ratio is 15:1, ball radius
For 8mm, Ball-milling Time 3h, planetary ball mill rotating speed is 250r/min, and absolute ethyl alcohol is decentralized medium, is obtained finely dispersed
Mixed powder；
4th step：The mixed powder that third is walked carries out discharge plasma sintering, obtains coat of silicon carbide modification
The Si-B-C-N ceramic composite material of multi-walled carbon nanotube enhancing, wherein sintering condition are, under nitrogen protection effect, in temperature
It is 1800 DEG C, under the conditions of pressure is 30MPa, is sintered 5min.
Coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material obtained by the present embodiment is anti-
Curved intensity is 305.1-505.3MPa, hardness 4.8-5.5GPa, fracture toughness 3.01-5.26MPam1/2。
Embodiment 8
The present embodiment provides a kind of coat of silicon carbide modified multiwalled carbon nanotubes to enhance Si-B-C-N ceramic composite material
Preparation method comprising following steps：
The first step：Silica flour, graphite powder and hexagonal boron nitride powder are added in high energy ball mill, carry out ball under protection of argon gas
Mill, ball material mass ratio are 25:1, ball radius 12mm, Ball-milling Time 22h, master rotating speed are 350r/min, ball grinder phase
It is 675r/min to rotating speed, obtains amorphous Si-B-C-N powder, and the molar ratio of silicon in amorphous Si-B-C-N powder, carbon, boron is
2:3:1, wherein the grain size of the silica flour, the graphite and the hexagonal boron nitride three no more than 20 μm, the silica flour,
The purity of the graphite and the hexagonal boron nitride three are 99-99.9%；
Second step：The effective polysilazane of multi-wall carbon nano-tube is coated, is added under protection of argon gas using tubular type after drying
Hot stove carries out high-temperature process, and specific steps are, 35min is carried out under the conditions of ultrasonic agitation, then in 105 DEG C of drying and processings
26h is finally heat-treated 1.5h under argon atmosphere at 1400 DEG C of temperature；
Third walks：The amorphous Si-B-C-N powder obtained in 97-99 parts of steps 1 and 1-3 parts of steps 2 are weighed by volume fraction
Obtained coat of silicon carbide modified multiwalled carbon nanotube, then mixes through planetary ball mill, and ball material mass ratio is 25:1, ball radius
For 12mm, Ball-milling Time 7h, planetary ball mill rotating speed is 350r/min, and absolute ethyl alcohol is decentralized medium, is uniformly dispersed
Mixed powder；
4th step：The mixed powder that third is walked carries out discharge plasma sintering, obtains coat of silicon carbide modification
The Si-B-C-N ceramic composite material of multi-walled carbon nanotube enhancing, wherein sintering condition are, under nitrogen protection effect, in temperature
It is 1800 DEG C, under the conditions of pressure is 30MPa, is sintered 5min.
The Si-B-C-N ceramic composite material of coat of silicon carbide modified multiwalled carbon nanotube enhancing obtained by the present embodiment
Bending strength is 309.4-535.4MPa, hardness 4.4-5.2GPa, fracture toughness 3.34-6.20MPam1/2。
The foregoing is merely presently preferred embodiments of the present invention, is merely illustrative for the purpose of the present invention, and not restrictive
's.Those skilled in the art understand that in the spirit and scope defined by the claims in the present invention many changes can be carried out to it,
It changes or even equivalent, but falls in protection scope of the present invention.
Claims (10)
1. coat of silicon carbide modified multiwalled carbon nanotube enhances the preparation method of Si-B-C-N ceramic composite material, feature exists
In including the following steps：
The first step：Silica flour, graphite powder and hexagonal boron nitride powder are added in high energy ball mill, carry out ball milling under protection of argon gas,
Ball material mass ratio is 15-25:1, ball radius 8-12mm obtain amorphous Si-B-C-N powder；
Second step：The effective polysilazane of multi-wall carbon nano-tube is coated, carries out high-temperature process after drying under protection of argon gas；
Third walks：The amorphous Si-B-C-N powder obtained in 95-99 parts of steps 1 is weighed by volume fraction to obtain with 1-5 parts of steps 2
Coat of silicon carbide modified multiwalled carbon nanotube, then mixed through planetary ball mill, ball material mass ratio be 15-25:1, ball radius
For 8-12mm, absolute ethyl alcohol is decentralized medium, obtains finely dispersed mixed powder；
4th step：The mixed powder that third is walked carries out discharge plasma sintering, obtains coat of silicon carbide and is modified multi wall
The Si-B-C-N ceramic composite material of carbon nanotube enhancing.
2. coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material according to claim 1
Preparation method, which is characterized in that the grain size of silica flour described in the first step, the graphite and the hexagonal boron nitride three is little
In 20 μm.
3. coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material according to claim 2
Preparation method, which is characterized in that the purity of the silica flour, the graphite and the hexagonal boron nitride three is 99-99.9%.
4. coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material according to claim 3
Preparation method, which is characterized in that the condition of ball milling described in the first step is Ball-milling Time 18-22h, and master rotating speed is 300-
350r/min, ball grinder relative rotation speed are 625-675r/min.
5. coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material according to claim 4
Preparation method, which is characterized in that silicon in obtained amorphous Si-B-C-N powder in the first step, carbon, boron molar ratio be 2:3:
1。
6. coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material according to claim 1
Preparation method, which is characterized in that coated described in second step the specific steps are carry out 25-35min under the conditions of ultrasonic agitation.
7. coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material according to claim 6
Preparation method, which is characterized in that the condition of drying and high-temperature process described in second step is, is 95-105 DEG C of drying and processing in temperature
22-26h, and it is heat-treated 1.5-3.5h at being 1200-1400 DEG C in temperature.
8. coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material according to claim 1
Preparation method, which is characterized in that the condition that third walks the ball milling is Ball-milling Time 3-7h, and planetary ball mill rotating speed is
250-350r/min。
9. coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N ceramic composite material according to claim 1
Preparation method, which is characterized in that the condition that discharge plasma described in the 4th step is sintered is, under nitrogen protection effect, Yu Wen
Degree is 1800-2000 DEG C, under the conditions of pressure is 30-50MPa, is sintered 5-10min.
10. the coat of silicon carbide modified multiwalled carbon nanotube enhancing Si-B-C-N pottery according to any one of claim 1-9
Si-B-C-N ceramic composite material prepared by the preparation method of porcelain composite material.
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| US20100130344A1 (en) * | 2008-11-26 | 2010-05-27 | Ceradyne, Inc. | High resistivity SiC material with B, N and O as the only additions |
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| CN107827461A (en) * | 2017-11-16 | 2018-03-23 | 哈尔滨工业大学 | A kind of resistance to ablation fiber reinforced Si-B-C-N zircon ceramic based composites, its preparation method and application |
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| US20100130344A1 (en) * | 2008-11-26 | 2010-05-27 | Ceradyne, Inc. | High resistivity SiC material with B, N and O as the only additions |
| CN101870586A (en) * | 2010-07-07 | 2010-10-27 | 哈尔滨工业大学 | Amorphous and nanocrystalline Si-B-C-N ceramic composite material and preparation method thereof |
| CN107540399A (en) * | 2017-09-18 | 2018-01-05 | 中科院广州化学有限公司南雄材料生产基地 | CNT toughness reinforcing SiBCN (O) metal matrix ceramic composite coatings and its preparation method |
| CN107827461A (en) * | 2017-11-16 | 2018-03-23 | 哈尔滨工业大学 | A kind of resistance to ablation fiber reinforced Si-B-C-N zircon ceramic based composites, its preparation method and application |
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