CN115745645A - Preparation method of large-component C/C composite material blank - Google Patents
Preparation method of large-component C/C composite material blank Download PDFInfo
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- CN115745645A CN115745645A CN202211484853.8A CN202211484853A CN115745645A CN 115745645 A CN115745645 A CN 115745645A CN 202211484853 A CN202211484853 A CN 202211484853A CN 115745645 A CN115745645 A CN 115745645A
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- 239000002131 composite material Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 70
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 53
- 239000010439 graphite Substances 0.000 claims abstract description 53
- 238000007740 vapor deposition Methods 0.000 claims abstract description 20
- 238000005087 graphitization Methods 0.000 claims abstract description 17
- 238000003763 carbonization Methods 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 239000007791 liquid phase Substances 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 50
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 42
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 36
- 238000000151 deposition Methods 0.000 claims description 35
- 230000008021 deposition Effects 0.000 claims description 35
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
- 229910052799 carbon Inorganic materials 0.000 claims description 17
- 239000003085 diluting agent Substances 0.000 claims description 14
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 8
- 239000004917 carbon fiber Substances 0.000 claims description 8
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 7
- 238000007791 dehumidification Methods 0.000 claims description 7
- 239000005011 phenolic resin Substances 0.000 claims description 7
- 229920001568 phenolic resin Polymers 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 8
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 27
- 238000005070 sampling Methods 0.000 description 10
- 238000010000 carbonizing Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002296 pyrolytic carbon Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Abstract
The invention relates to the technical field of C/C composite material preparation, and discloses a preparation method of a large-component C/C composite material blank, which comprises the following steps: preparing a prefabricated body; pretreating the prefabricated body, dehumidifying and removing impurities; carrying out isobaric vapor deposition on the prefabricated body to obtain a blank; preparing a graphite tool; placing the blank in a graphite tool, and carrying out differential pressure vapor deposition; carrying out high-temperature graphitization treatment on the deposited blank; liquid phase impregnation-carbonization is carried out on the graphitized blank; and carrying out high-temperature treatment on the blank to obtain the final C/C composite material blank. The preparation method of the large-component C/C composite material blank realizes the preparation of the large-size and large-thickness C/C composite material blank, and the prepared blank has higher internal density uniformity and mechanical strength.
Description
Technical Field
The invention relates to the technical field of C/C composite material preparation, in particular to a preparation method of a large-component C/C composite material blank.
Background
The C/C composite material takes carbon fiber fabric as a reinforcement, and the high-temperature resistant composite material obtained by the densification process of resin carbon, pitch carbon or pyrolytic carbon by chemical vapor deposition has a series of excellent performances such as light specific gravity, high modulus, large specific strength, low thermal expansion coefficient, high temperature resistance, thermal shock resistance, corrosion resistance, good friction performance and the like.
The C/C composite material has excellent performance, is widely applied to the military field of aerospace, aviation and the like, is an irreplaceable high-precision material, particularly has the performance of not reducing and reversely increasing the strength at high temperature, and cannot be achieved by other materials at present.
By improving the oxidation resistance of the composite material, the C/C composite material can be used for rudders, wings, front edges and large-area outer heat-proof layers of hypersonic-speed weapons, and has great potential in the follow-up process.
However, when the size of the C/C composite material reaches a certain bottleneck, the process difficulty and complexity are greatly increased, and high cost is brought; the defects of nonuniform carburization, more carbon-rich areas, large material strength dispersion and the like exist in the preparation of large-size C/C composite materials, and the consistency of products is difficult to ensure.
Disclosure of Invention
The invention aims to provide a method for preparing a large-component C/C composite material blank, aiming at the defects of the technology, so that the preparation of the large-size and large-thickness C/C composite material blank is realized, and the prepared blank has higher internal density uniformity and mechanical strength.
In order to realize the purpose, the preparation method of the large-component C/C composite material blank comprises the following steps:
a) Preparing a prefabricated body;
b) Pretreating the prefabricated body, dehumidifying and removing impurities;
c) Carrying out isobaric vapor deposition on the prefabricated body to obtain a blank;
d) Preparing a graphite tool;
e) Placing the blank in a graphite tool, and carrying out differential pressure vapor deposition;
f) Carrying out high-temperature graphitization treatment on the deposited blank;
g) Carrying out liquid phase impregnation-carbonization on the graphitized blank;
h) And carrying out high-temperature treatment on the blank to obtain the final C/C composite material blank.
Preferably, in the step A), the prefabricated body has a needle punched structure and the density is 0.5-0.6 g/cm 3 Alternately layering the internal carbon fiber net tire and the non-woven fabric, wherein the needling density is 5-8 needles/cm 2 The size of the prefabricated body is more than or equal to 1000 multiplied by 200 multiplied by 100mm, and the length multiplied by the width multiplied by the thickness.
Preferably, in the step B), the preform is subjected to low-temperature treatment at 100-120 ℃ for 6-8 h for dehumidification and then to high-temperature treatment at 1800-1900 ℃ for 1-2 h.
Preferably, in the step C), during the isobaric vapor deposition, the preform after high-temperature treatment is vertically placed in a deposition furnace, the carbon source gas is methane, the diluent gas is nitrogen, the gas flows along the periphery of the preform from bottom to top, the deposition pressure is 10-25 KPa, the furnace temperature is 1000-1200 ℃, the deposition time is 100-120 h, and a blank is prepared, wherein the density is 1.0-1.1 g/cm 3 。
Preferably, in the step D), the graphite tool is made of high-purity graphite, the tool design ensures that the long surface and the wide surface of the blank are completely attached to the graphite tool, the graphite tool is a closed space, only an air inlet and an air outlet are reserved on the upper end surface and the lower end surface, the air inlet is arranged in the center of the lower end surface of the graphite tool, the air outlets are uniformly distributed on the upper end surface, and the distance between the air outlets is not more than 20mm.
Preferably, in the step E), the blank is placed in a graphite tool, the gas flow is ensured to have the tendency of diffusing and flowing along the interior of the blank, differential pressure vapor deposition is carried out, the carbon source gas is methane, the diluent gas is nitrogen, the gas flowing mode is that the gas flows along the periphery of the preform from bottom to top, the deposition pressure is 10 to 25KPa, the furnace temperature is 1000 to 1200 ℃, the deposition time is 100 to 120 hours, and the density of the processed blank is 1.5 to 1.6g/cm 3 。
Preferably, in the step F), the deposited blank is placed in a graphitization furnace, and high temperature graphitization treatment is performed at 1700 to 1900 ℃ for 1 to 2 hours.
Preferably, in the step G), the graphitized blank is vacuum-impregnated with phenolic resin and then 2-3 MPPressurizing with nitrogen for 5-6 hr, carbonizing at 800-900 deg.c for 1-2 hr, repeating the said steps for 10-12 times to obtain blank with density of 1.85-1.9 g/cm 3 。
Preferably, in the step H), the blank after carbonization treatment is treated at the high temperature of 2600-2800 ℃ for 1-2H to prepare the C/C composite material blank.
Compared with the prior art, the invention has the following advantages:
1. successfully preparing a large-size C/C composite material blank with the blank size of more than or equal to 1000 multiplied by 200 multiplied by 100mm (length multiplied by width multiplied by thickness);
2. the prepared C/C composite material blank has good internal uniformity and high mechanical strength;
3. the preparation method is simple and low in cost;
4. the prepared C/C composite material blank has good product consistency.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
A) Preparing a prefabricated body which is of a needling structure and has the density of 0.5g/cm 3 Alternately layering the internal carbon fiber net tire and the non-woven fabric, wherein the needling density is 5 needles/cm 2 The size of the prefabricated body is 1000 multiplied by 200 multiplied by 100mm, the length multiplied by the width multiplied by the thickness;
b) Processing the prefabricated body at 100 ℃ for 6h for dehumidification, and then processing at 1800 ℃ for 1h;
c) Carrying out isobaric vapor deposition on the preform, erecting the preform subjected to high-temperature treatment in a deposition furnace, wherein a carbon source gas is methane, a diluent gas is nitrogen, the gas flows along the periphery of the preform from bottom to top, the deposition pressure is 10KPa, the furnace temperature is 1000 ℃, and the deposition time is 100 hours to prepare a blank;
d) Preparing a graphite tool, wherein the graphite tool is made of high-purity graphite, the tool design ensures that the long surface and the wide surface of the blank are completely attached to the graphite tool, the graphite tool is a closed space, only an air inlet and an air outlet are reserved on the upper end surface and the lower end surface, the air inlet is arranged in the center of the lower end surface of the graphite tool, the air outlets are uniformly distributed on the upper end surface, and the distance between the air outlets is not more than 20mm;
e) Placing the blank in a graphite tool, ensuring that airflow has the tendency of diffusing and flowing along the interior of the blank, and performing differential pressure vapor deposition, wherein a carbon source gas is methane, a diluent gas is nitrogen, the gas flows from bottom to top along the periphery of the preform in a gas flow mode, the deposition pressure is 10KPa, the furnace temperature is 1000 ℃, and the deposition time is 100 hours;
f) Placing the deposited blank in a graphitization furnace, and performing high-temperature graphitization treatment for 1h at 1700 ℃;
g) Vacuum impregnating the graphitized blank with phenolic resin, pressurizing with 2MPa nitrogen for 5h, taking out the impregnated blank, carbonizing at 800 deg.C for 1h, repeating the step for 10 times, and making the blank with density of 1.85g/cm 3 ；
H) Treating the carbonized blank at 2600 deg.C for 1h to obtain C/C composite material blank with density of 1.83g/cm 3 。
The test shows that the middle sampling density of the C/C composite material blank prepared in the embodiment is 1.81g/cm 3 Edge sampling density 1.84g/cm 3 (ii) a The tensile strength is as high as 180MPa, and the bending strength is as high as 270MPa.
Example 2
A) Preparing a prefabricated body which is of a needling structure and has the density of 0.6g/cm 3 Alternately layering the internal carbon fiber net tire and the non-woven fabric, wherein the needling density is 8 needles/cm 2 The size of the prefabricated body is 1200 multiplied by 200 multiplied by 100mm, the length multiplied by the width multiplied by the thickness;
b) Processing the prefabricated body at the low temperature of 120 ℃ for 8h for dehumidification, and then processing the prefabricated body at the high temperature of 1900 ℃ for 1h;
c) Carrying out isobaric vapor deposition on the preform, erecting the preform subjected to high-temperature treatment in a deposition furnace, wherein a carbon source gas is methane, a diluent gas is nitrogen, the gas flows along the periphery of the preform from bottom to top, the deposition pressure is 25KPa, the furnace temperature is 1200 ℃, and the deposition time is 100 hours, so as to prepare a blank;
d) Preparing a graphite tool, wherein the graphite tool is made of high-purity graphite, the tool design ensures that the long surface and the wide surface of the blank are completely attached to the graphite tool, the graphite tool is a closed space, only an air inlet and an air outlet are reserved on the upper end surface and the lower end surface, the air inlet is arranged in the center of the lower end surface of the graphite tool, the air outlets are uniformly distributed on the upper end surface, and the distance between the air outlets is not more than 20mm;
e) Placing the blank in a graphite tool, ensuring that airflow has the tendency of diffusing and flowing along the interior of the blank, and performing differential pressure vapor deposition, wherein a carbon source gas is methane, a diluent gas is nitrogen, the gas flows from bottom to top along the periphery of the preform in a manner of 25KPa of deposition pressure, 1200 ℃ of furnace temperature and 100h of deposition time;
f) Placing the deposited blank in a graphitization furnace, and performing high-temperature graphitization treatment for 1h at 1900 ℃;
g) Vacuum impregnating the graphitized blank with phenolic resin, pressurizing with 3MPa nitrogen for 5h, taking out the impregnated blank, carbonizing at 900 deg.C for 1h, repeating the step for 10 times to obtain blank with density of 1.88g/cm 3 ；
H) Treating the blank after carbonization at 2600 deg.C for 1h to obtain C/C composite material blank with density of 1.86g/cm 3 。
The test shows that the middle sampling density of the C/C composite material blank prepared in the embodiment is 1.81g/cm 3 Edge sampling density 1.84g/cm 3 (ii) a The tensile strength is as high as 180MPa, and the bending strength is as high as 270MPa.
Example 3
A) Preparing a prefabricated body which is in a needling structure and has the density of 0.6g/cm 3 The internal carbon fiber net tire and the non-woven cloth are alternately layered, and the needling density is 6 needles/cm 2 The size of the prefabricated body is 1000 multiplied by 300 multiplied by 100mm, the length multiplied by the width multiplied by the thickness;
b) Processing the prefabricated body at the low temperature of 120 ℃ for 8h for dehumidification, and then processing the prefabricated body at the high temperature of 1900 ℃ for 2h;
c) Carrying out isobaric vapor deposition on the preform, erecting the preform subjected to high-temperature treatment in a deposition furnace, wherein a carbon source gas is methane, a diluent gas is nitrogen, the gas flows along the periphery of the preform from bottom to top, the deposition pressure is 25KPa, the furnace temperature is 1200 ℃, and the deposition time is 120h, so as to prepare a blank;
d) Preparing a graphite tool, wherein the graphite tool is made of high-purity graphite, the tool design ensures that the long surface and the wide surface of the blank are completely attached to the graphite tool, the graphite tool is a closed space, only an air inlet and an air outlet are reserved on the upper end surface and the lower end surface, the air inlet is arranged in the center of the lower end surface of the graphite tool, the air outlets are uniformly distributed on the upper end surface, and the distance between the air outlets is not more than 20mm;
e) Placing the blank in a graphite tool, ensuring that airflow has the tendency of diffusing and flowing along the interior of the blank, and performing differential pressure vapor deposition, wherein the carbon source gas is methane, the diluent gas is nitrogen, the gas flows from bottom to top along the periphery of the preform in a gas flow mode, the deposition pressure is 25KPa, the furnace temperature is 1200 ℃, and the deposition time is 120h;
f) Placing the deposited blank in a graphitization furnace, and performing high-temperature graphitization treatment for 2h at 1900 ℃;
g) Vacuum impregnating the graphitized blank with phenolic resin, pressurizing with 3MPa nitrogen for 6h, taking out the impregnated blank, carbonizing at 900 deg.C for 2h, repeating the step for 12 times to obtain blank with density of 1.89g/cm 3 ；
H) Treating the blank after carbonization at 2600 deg.C for 2h to obtain C/C composite material blank with density of 1.85g/cm 3 。
The test shows that the middle sampling density of the C/C composite material blank prepared in the embodiment is 1.81g/cm 3 Edge sampling density 1.86g/cm 3 (ii) a The tensile strength is up to 160MPa, and the bending strength is up to 260MPa.
Example 4
A) Preparing a prefabricated body which is in a needling structure and has the density of 0.6g/cm 3 Alternately layering internal carbon fiber net tires and non-woven fabrics, wherein the needling density is 7 needles/cm 2 The size of the prefabricated body is 1000 multiplied by 200 multiplied by 150mm, the length multiplied by the width multiplied by the thickness;
b) Processing the prefabricated body at 110 ℃ for 7h for dehumidification, and then processing at 1850 ℃ for 1.5h;
c) Carrying out isobaric vapor deposition on the preform, erecting the preform subjected to high-temperature treatment in a deposition furnace, wherein a carbon source gas is methane, a diluent gas is nitrogen, the gas flows along the periphery of the preform from bottom to top, the deposition pressure is 20KPa, the furnace temperature is 1100 ℃, and the deposition time is 110h, so as to prepare a blank;
d) Preparing a graphite tool, wherein the graphite tool is made of high-purity graphite, the tool design ensures that the long surface and the wide surface of the blank are completely attached to the graphite tool, the graphite tool is a closed space, only an air inlet and an air outlet are reserved on the upper end surface and the lower end surface, the air inlet is arranged in the center of the lower end surface of the graphite tool, the air outlets are uniformly distributed on the upper end surface, and the distance between the air outlets is not more than 20mm;
e) Placing the blank in a graphite tool, ensuring that airflow has the tendency of diffusing and flowing along the interior of the blank, and performing differential pressure vapor deposition, wherein a carbon source gas is methane, a diluent gas is nitrogen, the gas flows from bottom to top along the periphery of the preform in a gas flow mode, the deposition pressure is 20KPa, the furnace temperature is 1100 ℃, and the deposition time is 110h;
f) Placing the deposited blank in a graphitization furnace, and performing high-temperature graphitization treatment for 1.5h at 1800 ℃;
g) Vacuum impregnating the graphitized blank with phenolic resin, pressurizing with 2.5MPa nitrogen for 5.5h, taking out the impregnated blank, carbonizing at 850 deg.C for 1.5h, repeating the step for 11 times, and making the blank with density of 1.89g/cm 3 ；
H) Treating the blank after carbonization at 2700 ℃ for 1.5h to prepare the C/C composite material blank with the density of 1.84g/cm 3 。
The test shows that the middle sampling density of the C/C composite material blank prepared in the embodiment is 1.82g/cm 3 Edge sampling density 1.85g/cm 3 (ii) a The tensile strength is up to 150MPa, and the bending strength is up to 240MPa.
Example 5
A) Preparing a prefabricated body which is of a needling structure and has the density of 0.5g/cm 3 The internal carbon fiber net tire and the non-woven cloth are alternately layered, and the needling density is 7 needles/cm 2 The size of the prefabricated body is 1100 multiplied by 250 multiplied by 150mm, and the length multiplied by the width multiplied by the thickness;
b) Processing the prefabricated body at 100 ℃ for 6h for dehumidification, and then processing at 1800 ℃ for 1h;
c) Carrying out isobaric vapor deposition on the preform, erecting the preform subjected to high-temperature treatment in a deposition furnace, wherein a carbon source gas is methane, a diluent gas is nitrogen, the gas flows along the periphery of the preform from bottom to top, the deposition pressure is 25KPa, the furnace temperature is 1100 ℃, and the deposition time is 100 hours to prepare a blank;
d) Preparing a graphite tool, wherein the graphite tool is made of high-purity graphite, the tool design ensures that the long surface and the wide surface of the blank are completely attached to the graphite tool, the graphite tool is a closed space, only an air inlet and an air outlet are reserved on the upper end surface and the lower end surface, the air inlet is arranged in the center of the lower end surface of the graphite tool, the air outlets are uniformly distributed on the upper end surface, and the distance between the air outlets is not more than 20mm;
e) Placing the blank in a graphite tool, ensuring that airflow has the tendency of diffusing and flowing along the interior of the blank, and performing differential pressure vapor deposition, wherein the carbon source gas is methane, the diluent gas is nitrogen, the gas flows from bottom to top along the periphery of the preform in a gas flow mode, the deposition pressure is 25KPa, the furnace temperature is 1100 ℃, and the deposition time is 100 hours;
f) Placing the deposited blank in a graphitization furnace, and performing high-temperature graphitization treatment for 1h at 1700 ℃;
g) Vacuum impregnating the graphitized blank with phenolic resin, pressurizing with 2MPa nitrogen for 5h, taking out the impregnated blank, carbonizing at 800 deg.C for 1h, repeating the step for 10 times to obtain blank with density of 1.86g/cm 3 ；
H) Treating the blank after carbonization at 2600 deg.C for 1h to obtain C/C composite material blank with density of 1.84g/cm 3 。
Through testing, the middle sampling density of the C/C composite material blank prepared in the embodiment is 1.81g/cm 3 Edge sampling density 1.85g/cm 3 (ii) a The tensile strength is 185MPa, and the bending strength is 280MPa.
Claims (9)
1. A preparation method of a large component C/C composite material blank is characterized by comprising the following steps: the method comprises the following steps:
a) Preparing a prefabricated body;
b) Pretreating the prefabricated body, dehumidifying and removing impurities;
c) Carrying out isobaric vapor deposition on the prefabricated body to obtain a blank;
d) Preparing a graphite tool;
e) Placing the blank in a graphite tool, and carrying out differential pressure vapor deposition;
f) Carrying out high-temperature graphitization treatment on the deposited blank;
g) Carrying out liquid phase impregnation-carbonization on the graphitized blank;
h) And carrying out high-temperature treatment on the blank to obtain the final C/C composite material blank.
2. A method of making a large component C/C composite blank according to claim 1, wherein: in the step A), the prefabricated body is of a needling structure, and the density is 0.5-0.6 g/cm 3 The internal carbon fiber net tire and the non-woven cloth are alternately layered, and the needling density is 5 to 8 needles/cm 2 The size of the prefabricated body is more than or equal to 1000 multiplied by 200 multiplied by 100mm, and the length multiplied by the width multiplied by the thickness.
3. A method of making a large component C/C composite blank according to claim 1, wherein: in the step B), the preform is subjected to low-temperature treatment at 100-120 ℃ for 6-8 h for dehumidification, and then subjected to high-temperature treatment at 1800-1900 ℃ for 1-2 h.
4. A method of making a large component C/C composite blank according to claim 1, wherein: and in the step C), during isobaric vapor deposition, standing the preform subjected to high-temperature treatment in a deposition furnace, wherein the carbon source gas is methane, the diluent gas is nitrogen, the gas flows along the periphery of the preform from bottom to top, the deposition pressure is 10-25 KPa, the furnace temperature is 1000-1200 ℃, and the deposition time is 100-120 h, so that the blank is prepared.
5. A method of making a large component C/C composite blank according to claim 1, wherein: and D), the graphite tool is made of high-purity graphite, the tool design ensures that the long surface and the wide surface of the blank are completely attached to the graphite tool, the graphite tool is a closed space, only an air inlet and an air outlet are reserved on the upper end surface and the lower end surface, the air inlet is arranged in the center of the lower end surface of the graphite tool, the air outlets are uniformly distributed on the upper end surface, and the distance between the air outlets is not more than 20mm.
6. A method of making a large component C/C composite blank according to claim 1, wherein: and in the step E), the blank is placed in a graphite tool, the gas flow is ensured to have the tendency of diffusing and flowing along the interior of the blank, differential pressure vapor deposition is carried out, the carbon source gas is methane, the diluent gas is nitrogen, the gas flowing mode is that the gas flows along the periphery of the preform from bottom to top, the deposition pressure is 10-25 KPa, the furnace temperature is 1000-1200 ℃, and the deposition time is 100-120 h.
7. A method of making a large component C/C composite blank according to claim 1, wherein: in the step F), the deposited blank is placed in a graphitization furnace and is subjected to high-temperature graphitization treatment for 1-2 h at 1700-1900 ℃.
8. A method of making a large component C/C composite blank according to claim 1, wherein: in the step G), the graphitized blank is impregnated with phenolic resin in vacuum, then pressurized for 5-6 h under 2-3 MPa of nitrogen, taken out and carbonized for 1-2 h at 800-900 ℃, and the step is repeated for 10-12 times.
9. A method of making a large component C/C composite blank according to claim 1, wherein: in the step H), the blank after carbonization is treated at the high temperature of 2600-2800 ℃ for 1-2H to prepare the C/C composite material blank.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040089237A1 (en) * | 2002-07-17 | 2004-05-13 | Pruett James Gary | Continuous chemical vapor deposition process and process furnace |
| CN101734940A (en) * | 2009-11-20 | 2010-06-16 | 中南大学 | Pressure difference-based method and device for improving properties of carbon paper of quick CVI coating |
| CN201901702U (en) * | 2010-12-01 | 2011-07-20 | 西安超码科技有限公司 | Cylindrical part CVI (Chemical Vapor Immersion) slit oriented flow device |
| CN106946582A (en) * | 2017-03-31 | 2017-07-14 | 中南大学 | A kind of Large Size Special Shaped C-base composte material component and preparation method thereof |
| CN112707743A (en) * | 2020-12-31 | 2021-04-27 | 湖北三江航天江北机械工程有限公司 | Preparation method of variable-density C/C composite throat insert |
| CN113999033A (en) * | 2021-09-29 | 2022-02-01 | 芜湖天鸟高新技术有限公司 | CVD system and method for preparing large-size carbon/carbon composite material |
| CN115215673A (en) * | 2022-08-02 | 2022-10-21 | 福建康碳复合材料科技有限公司 | Manufacturing method of carbon-carbon composite material splicing sagger for containing graphite cathode product |
-
2022
- 2022-11-24 CN CN202211484853.8A patent/CN115745645B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040089237A1 (en) * | 2002-07-17 | 2004-05-13 | Pruett James Gary | Continuous chemical vapor deposition process and process furnace |
| CN101734940A (en) * | 2009-11-20 | 2010-06-16 | 中南大学 | Pressure difference-based method and device for improving properties of carbon paper of quick CVI coating |
| CN201901702U (en) * | 2010-12-01 | 2011-07-20 | 西安超码科技有限公司 | Cylindrical part CVI (Chemical Vapor Immersion) slit oriented flow device |
| CN106946582A (en) * | 2017-03-31 | 2017-07-14 | 中南大学 | A kind of Large Size Special Shaped C-base composte material component and preparation method thereof |
| CN112707743A (en) * | 2020-12-31 | 2021-04-27 | 湖北三江航天江北机械工程有限公司 | Preparation method of variable-density C/C composite throat insert |
| CN113999033A (en) * | 2021-09-29 | 2022-02-01 | 芜湖天鸟高新技术有限公司 | CVD system and method for preparing large-size carbon/carbon composite material |
| CN115215673A (en) * | 2022-08-02 | 2022-10-21 | 福建康碳复合材料科技有限公司 | Manufacturing method of carbon-carbon composite material splicing sagger for containing graphite cathode product |
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