CN109704800A - One kind being based on the molding short carbon fiber toughened ceramic composite forming method of direct write - Google Patents
One kind being based on the molding short carbon fiber toughened ceramic composite forming method of direct write Download PDFInfo
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Abstract
The invention discloses one kind to be based on the molding short carbon fiber toughened ceramic composite forming method of direct write, and this method prepares the short carbon fiber toughened ceramic slurry with shear shinning rheological characteristic first, using 3D printing equipment, prepares short carbon fiber direct write molding biscuit；It finally prepares fiber interface layer and with densification process, obtains short carbon fiber toughened composite ceramics part.The present invention enables to the fiber in part to arrange in high orientation, while can control printing path according to design of part, maximizes toughening effect；It is available to have excellent toughness, high intensity, porosity low and meet the short carbon fiber reinforced ceramic part of specific function requirement.
Description
Technical field
The invention belongs to rapid shaping fields, and in particular to one kind is based on the molding short carbon fiber toughened Ceramic Composite of direct write
Method of forming materials.
Background technique
Ceramic material is received significant attention because having many advantages, such as high-melting-point, high rigidity, high-wearing feature, resistance to oxidation, resistance to
High-temperature field has biggish application value.But the intrinsic brittleness disadvantage of ceramic material prevents it from directly practical.Cause
This, has scholar to propose the toughness for improving ceramics using fiber reinforcedceramics.
The advantages of short fiber reinforced ceramic material is simple process, strong operability, preparation cost reduction.However, traditional
Short fiber reinforced ceramic matric composite in staple fiber arrangement be it is rambling, with the short carbon fiber phase arranged in a jumble
Than the carbon fiber of high orientation shows anisotropy, and under the stress condition of specific direction, and strengthening effect obtained is
2-5 times when three-dimensional random is distributed.It can be seen that the directional profile degree of staple fiber in the composite is improved, it can be significant
Staple fiber is improved to the humidification of ceramic matrix.Currently, staple fiber orientation enhancing composite material is all to pass through hot extrusion molding
Ceramic material is carried out secondary operation acquisition by method.But use and be easy that fiber is caused to damage when this method, it reduces compound
The performance of material, and staple fiber directional effect is undesirable.
Direct write forming technique is one of rapid shaping emerging technology, it squeezes out the side that filament stacks by Mechanical course
Method manufactures complicated three-dimensional structure, by the fiber in the short carbon fiber toughened composite material of direct write molding preparation has height
Oriented alignment.In recent years, have scholar and short carbon fiber reinforced ceramic composite, and energy are made by direct write forming technique
It is enough that printing path is customized according to design of part feature, increased using three kinds of spike protein gene, fibrous fracture and crack deflection staple fibers
Tough mechanism maximizes toughening effect.However, the main manufacture approach of these methods is only the uniformly mixed fiber and matrix of molding
Material, due to the limitation of solid concentration, intensity is generally lower.
Summary of the invention
The molding short carbon fiber toughened ceramics of direct write are based on the purpose of the present invention is to overcome the above shortcomings and to provide a kind of
Composite material forming method, the fiber in forming part are arranged in high orientation, while can be controlled and be printed according to design of part
Path maximizes toughening effect.It is available to have excellent toughness, high intensity, porosity low and meet specific function requirement
Short carbon fiber reinforced ceramic part is mentioned by four kinds of spike protein gene, fibrous fracture, crack deflection and boundary layer unsticking toughening mechanisms
High toughness of material, and without design, manufacture mold, greatly reduce production cost and manufacturing time.
The present invention adopts the following technical scheme that realize:
One kind being based on the molding short carbon fiber toughened ceramic composite forming method of direct write, comprising the following steps:
Step 1 designs 3D model on computers and is converted into hierarchical path file importing 3D printer；
Step 2 prepares the short carbon fiber toughened ceramic slurry with shear shinning rheological characteristic, and is supplied to slurry injection
Device；
Step 3, screw rod work, provides homogeneous pressure, short carbon fiber toughened ceramic slurry is supplied to 3D by slurry syringe
The print head of printer；
Step 4, the short carbon fiber toughened ceramic slurry at print-head nozzle is under the pressure effect of screw rod from jet expansion
It is extruded；
Step 5, when carrying out part 3D printing work, process control two-dimension moving platform drives print head flat in work
It is moved on platform according to the cross-section data of current layer model, squeezes out filament and press printing path laying, form the section；
Step 6, when completing model behind the section of preceding layer, lifting device will decline together one with workbench
Lift height；
Step 7 repeats step 3 to step 6 and obtains printing biscuit until part printing is completed；
Step 8 carries out chemical vapor deposition to printing biscuit or impregnating cracking technology prepares fiber interface layer；
Step 9 further increases part consistency using densification processes such as liquid Si infiltration or hot isostatic pressings, that is, completes
The molding of short carbon fiber toughened ceramic composite based on direct write forming technique.
A further improvement of the present invention lies in that the preparation method of short carbon fiber toughened ceramic slurry is such as in the step 2
Under:
The first step, be (2~5) by volume ratio: 1 carbon fiber powder and ceramic powders uniformly mixes；
Mass ratio is (14~17): (0.4~0.8): (0.05~0.2): the deionization of (0.05~0.30) by second step
The powder in the first step is added in water, gelling agent and dispersing agent, stirs evenly, and is configured to the short carbon fiber that total solid phase is 14%~26%
Tie up toughening ceramic slurry.
A further improvement of the present invention lies in that in the first step, according to needed for part performance, using 70 μm -200 μm
The ceramic powders that short carbon fiber and granularity are 0.5 μm -500 μm；Ceramic powders select alumina powder, alpha-silicon nitride powders or carbonization
Si powder；
In the second step, dispersing agent is by single in tetramethyl aqua ammonia, calgon, Darvan-c, polyethylene glycol
One or mixed preparing form；Gelling agent can be made of single in guar gum, xanthan gum, sodium carboxymethylcellulose or mixing.
A further improvement of the present invention lies in that in the step 8, if carrying out chemical vapor deposition using trichloromethyl silane
Product, deposition pressure 2500Pa-3500Pa, temperature are 900 DEG C -1200 DEG C, and sedimentation time is in 4h or more.
A further improvement of the present invention lies in that in the step 8, if carrying out infiltration pyrolysis, technique using Polycarbosilane
Are as follows: using dimethylbenzene as solvent, the Polycarbosilane solution of 30-60wt% is prepared, impregnates 30min；Crack heating process are as follows: 5-10
DEG C/min, it is warming up to 1100-1300 DEG C, keeps the temperature 2-4h.
A further improvement of the present invention lies in that in the step 9, densification process can be used phenolic resin cracking carburizing,
Siliconising or hot isostatic pressing.
A further improvement of the present invention lies in that carburizing is cracked according to phenolic resin, the specific process is as follows:
The first step, by 50wt%-65wt% phenolic resin, the phenolic aldehyde tree of 35-55wt% ethylene glycol and 8wt%-20wt%
Rouge curing agent uniformly mixes, and is configured to maceration extract, impregnates to part；
Second step takes out after the part after dipping is dried 2h at 60 DEG C, then goes at 100 DEG C and continue to dry 12h；
Third step, the part after drying are put and carry out degreasing at different temperatures, and phenolic resin cracking technology is completed.
A further improvement of the present invention lies in that part is first warming up to 220-260 DEG C of degreasing from 0 DEG C in the third step
2-3h, then 400 DEG C of degreasings 3-4h, last 300-500 DEG C of heat preservation degreasing 6-10h are warming up to from 220-260 DEG C.
A further improvement of the present invention lies in that according to siliconising, the specific process is as follows:
Part and silicon powder are put into graphite crucible, then put it into vacuum sintering furnace by the first step；
Second step, is warming up to 900-1200 DEG C by 5-15 DEG C/min, and is passed through nitrogen heat preservation 2-4h；
Third step 5-10 DEG C/min, is warming up to 1400-1600 DEG C, keeps the temperature 0.5-1h；
4th step, quickly takes out nitrogen, and heat preservation terminates.
The present invention has following beneficial technical effect:
The present invention first prints the short fibre with high short carbon fiber solid concentration using short carbon fiber toughened ceramic slurry as raw material
Slurry is tieed up, then part performance is further increased by densification process, realizes the straight of short carbon fiber toughened ceramic composite
Write forming.Present invention utilizes direct write forming techniques, can be required according to part function, make rational planning for short carbon fiber in part
Layout, so that toughening effect of the short carbon fiber in ceramic part green body is optimal；Finally by densification process, pottery is reduced
Porcelain part porosity further increases the toughness, intensity and precision of ceramic part.In addition to this, this method be suitable for it is different at
The direct write molding of the ceramic material divided, is had diversity, is easy to get using this method with the ceramics for customizing mechanical property
Part is, it can be achieved that have the quick manufacture of the short carbon fiber toughened ceramic matric composite part of labyrinth.
Detailed description of the invention
Fig. 1 is that the fiber in forming part of the present invention arranges schematic diagram in high orientation.
Specific embodiment
The present invention is made further instructions below in conjunction with drawings and examples.
It is provided by the invention a kind of based on the molding short carbon fiber toughened ceramic composite forming method of direct write, molding zero
Fiber in part arranges (as shown in Figure 1) in high orientation, method includes the following steps:
Step 1 designs 3D model on computers and is converted into hierarchical path file importing 3D printer；
Step 2 prepares the short carbon fiber toughened ceramic slurry with shear shinning rheological characteristic, and is supplied to slurry injection
Device；In the step 2, short carbon fiber toughened ceramic slurry the preparation method is as follows:
The first step, be (2-5) by volume ratio: 1 carbon fiber powder and ceramic powders uniformly mixes；In the first step,
According to needed for part performance, use 70 μm -200 μm of short carbon fiber and granularity for 0.5 μm -500 μm of ceramic powders, ceramic powder
The optional alumina powder in end, alpha-silicon nitride powders or silicon carbide powder.
Mass ratio is (14~17): (0.4~0.8): (0.05~0.2): the deionization of (0.05~0.30) by second step
The powder in the first step is added in water, gelling agent and dispersing agent, stirs evenly, and is configured to the short carbon fiber that total solid phase is 14%~26%
Tie up toughening ceramic slurry.In the second step, dispersing agent by tetramethyl aqua ammonia (TMAH), calgon (SHMP),
Single or mixed preparing forms in Darvan-c, polyethylene glycol；Gelling agent can be by guar gum, xanthan gum, carboxymethyl cellulose
Single or mixing composition in sodium.
Step 3, screw rod work provide homogeneous pressure, and short carbon fiber toughened ceramic slurry is supplied to by slurry syringe and is beaten
Print head；
Step 4, the short carbon fiber toughened ceramic slurry at print-head nozzle is under the pressure effect of screw rod from jet expansion
It is extruded；
Step 5, when carrying out part 3D printing work, process control two-dimension moving platform drives print head flat in work
It is moved on platform according to the cross-section data of current layer model, squeezes out filament and press printing path laying, form the section；
Step 6, when completing model behind the section of preceding layer, lifting device will decline together one with workbench
Lift height；
Step 7 repeats step 3 to step 6, until part is completed；
Step 8 carries out chemical vapor deposition (using trichloromethyl silane) or impregnating cracking technology to printing biscuit
(using Polycarbosilane) prepares fiber interface layer；In the step 8, if carrying out chemical vapor deposition using trichloromethyl silane,
Deposition pressure is 2500Pa-3500Pa, and temperature is 900 DEG C -1200 DEG C, and sedimentation time is in 4h or more.
In the step 8, if carrying out infiltration pyrolysis, technique using Polycarbosilane are as follows: using dimethylbenzene as solvent, prepare 30-
The Polycarbosilane solution of 60wt% impregnates 30min；Crack heating process are as follows: 5-10 DEG C/min, be warming up to 1100-1300 DEG C, protect
Warm 2-4h.
Step 9 further increases part consistency using densification process, that is, completes based on the short of direct write forming technique
The forming method of carbon fiber-reinforced ceramic composite.
In the step 9, phenolic resin cracking carburizing, siliconising or hot isostatic pressing is can be used in densification process.
In the step 9, carburizing is cracked according to phenolic resin, the specific process is as follows:
The first step, by 50wt%-65wt% phenolic resin, the phenolic aldehyde tree of 35-55wt% ethylene glycol and 8wt%-20wt%
Rouge curing agent uniformly mixes, and is configured to maceration extract, impregnates to part.
Second step takes out after the part after dipping is dried 2h at 60 DEG C, then goes at 100 DEG C and continue to dry 12h.
Third step, the part after drying are put and carry out degreasing at different temperatures, and phenolic resin cracking technology is completed.
In the third step, part is first warming up to 220-260 DEG C of degreasing 2-3h from 0 DEG C, then be warming up to from 220-260 DEG C
400 DEG C of degreasings 3-4h, last 300-500 DEG C of heat preservation degreasing 6-10h.
In the step 9, according to siliconising, the specific process is as follows:
Part and silicon powder are put into graphite crucible, then put it into vacuum sintering furnace by the first step.
Second step, is warming up to 900-1200 DEG C by 5-15 DEG C/min, and is passed through nitrogen heat preservation 2-4h.
Third step 5-10 DEG C/min, is warming up to 1400-1600 DEG C, keeps the temperature 0.5-1h.
4th step, quickly takes out nitrogen, and heat preservation terminates.
Embodiment 1:
One kind being based on the molding short carbon fiber toughened ceramic composite forming method of direct write, comprising the following steps:
(1) preparation has the short carbon fiber toughened ceramic slurry of shear shinning rheological characteristic
100 μm of short carbon fiber and 2 μm of silicon carbide powder are uniformly mixed according to volume ratio 3:1, by deionized water, melon
You are added in above-mentioned powder bean gum, TMAH and polyethylene glycol according to mass ratio 15:0.7:0.1:0.25, and abundant mechanical stirring is matched
It is set to the short carbon fiber toughened ceramic slurry with shear shinning rheological characteristic that total solid phase is 20%.
(2) biscuit is printed
3D model conversion is imported at layering path file using 3D printing delamination software Simplify3D on computers
3D printer.Short carbon fiber toughened ceramic slurry is supplied to slurry syringe, the work of printer screw rod will be short carbon fiber toughened
Ceramic slurry is supplied to print head by slurry syringe, and under pressure continuous action, slurry is exported from print-head nozzle and squeezed out.It beats
Print head is moved according to model data, finally molding printing biscuit.
(3) chemical vapor deposition
Printing biscuit is put into chemical vapor deposition stove, using trichloromethyl silane (MTS) as air-born substances, hydrogen is made
For carrier gas, argon gas carries out SiC chemical vapor deposition/infiltration to hole as carrier gas, by gas diffusion.Specifically comprises the processes of:
Deposition pressure is 3000Pa, and temperature is 1000 DEG C, deposits 5h.
(4) densification process
Carburizing is cracked using phenolic resin first, by 50wt% phenolic resin, the phenolic aldehyde of 35wt% ethylene glycol and 10wt%
Resin curing agent uniformly mixes, and is configured to maceration extract, impregnates to the printing biscuit for carrying out chemical vapor deposition.Later will
Part takes out after drying 2h at 60 DEG C, then goes at 100 DEG C and continue to dry 12h.After drying, part is put into debinding furnace, from 0
DEG C 250 DEG C of degreasing 2.5h are warming up to, then are warming up to 400 DEG C of degreasing 4h from 250 DEG C, finally the degreasing 10h at 300 DEG C.
Siliconising is carried out to part after carburizing, it is put into graphite crucible with silicon powder, then be put into togerther vacuum sintering furnace.With
10 DEG C/min is warming up to 1100 DEG C, is passed through nitrogen heat preservation 2h；Again with 5 DEG C/min, 1500 DEG C are warming up to, keeps the temperature 1h, then quickly
Nitrogen is taken out, heat preservation terminates, and obtains short carbon fiber toughened ceramic part.The big small sample bending strength of 4mm × 4mm × 50mm is 274
± 13Mpa, fracture toughness are 5.82 ± 0.25MPa m1/2.
Embodiment 2
1) preparation has the short carbon fiber toughened ceramic slurry of shear shinning rheological characteristic
200 μm of short carbon fiber and 500 μm of silicon carbide powder are uniformly mixed according to volume ratio 5:1, by deionized water,
Guar gum, TMAH and polyethylene glycol are added in above-mentioned powder according to mass ratio 17:0.8:0.2:0.30, abundant mechanical stirring,
It is configured to the short carbon fiber toughened ceramic slurry with shear shinning rheological characteristic that total solid phase is 26%.
(2) biscuit is printed
3D model conversion is imported at layering path file using 3D printing delamination software Simplify3D on computers
3D printer.Short carbon fiber toughened ceramic slurry is supplied to slurry syringe, the work of printer screw rod will be short carbon fiber toughened
Ceramic slurry is supplied to print head by slurry syringe, and under pressure continuous action, slurry is exported from print-head nozzle and squeezed out.It beats
Print head is moved according to model data, finally molding printing biscuit.
(3) chemical vapor deposition
Printing biscuit is put into chemical vapor deposition stove, using trichloromethyl silane (MTS) as air-born substances, hydrogen is made
For carrier gas, argon gas carries out SiC chemical vapor deposition/infiltration to hole as carrier gas, by gas diffusion.Specifically comprises the processes of:
Deposition pressure is 3500Pa, and temperature is 1200 DEG C, deposits 7h.
(4) densification process
Carburizing is cracked using phenolic resin first, by 65wt% phenolic resin, the phenolic aldehyde of 55wt% ethylene glycol and 20wt%
Resin curing agent uniformly mixes, and is configured to maceration extract, impregnates to the printing biscuit for carrying out chemical vapor deposition.Later will
Part takes out after drying 2h at 60 DEG C, then goes at 100 DEG C and continue to dry 12h.After drying, part is put into debinding furnace, from 0
DEG C 260 DEG C of degreasing 3h are warming up to, then are warming up to 400 DEG C of degreasing 4h from 260 DEG C, finally the degreasing 10h at 500 DEG C.
Siliconising is carried out to part after carburizing, it is put into graphite crucible with silicon powder, then be put into togerther vacuum sintering furnace.With
15 DEG C/min is warming up to 1200 DEG C, is passed through nitrogen heat preservation 4h；Again with 10 DEG C/min, 1600 DEG C are warming up to, keeps the temperature 1h, then quickly
Nitrogen is taken out, heat preservation terminates, and obtains short carbon fiber toughened ceramic part.
Embodiment 3
1) preparation has the short carbon fiber toughened ceramic slurry of shear shinning rheological characteristic
70 μm of short carbon fiber and 0.5 μm of silicon carbide powder are uniformly mixed according to volume ratio 2:1, by deionized water,
Guar gum, TMAH and polyethylene glycol are added in above-mentioned powder according to mass ratio 14:0.4:0.05:0.05, abundant mechanical stirring,
It is configured to the short carbon fiber toughened ceramic slurry with shear shinning rheological characteristic that total solid phase is 14%.
(2) biscuit is printed
3D model conversion is imported at layering path file using 3D printing delamination software Simplify3D on computers
3D printer.Short carbon fiber toughened ceramic slurry is supplied to slurry syringe, the work of printer screw rod will be short carbon fiber toughened
Ceramic slurry is supplied to print head by slurry syringe, and under pressure continuous action, slurry is exported from print-head nozzle and squeezed out.It beats
Print head is moved according to model data, finally molding printing biscuit.
(3) chemical vapor deposition
Printing biscuit is put into chemical vapor deposition stove, using trichloromethyl silane (MTS) as air-born substances, hydrogen is made
For carrier gas, argon gas carries out SiC chemical vapor deposition/infiltration to hole as carrier gas, by gas diffusion.Specifically comprises the processes of:
Deposition pressure is 2500Pa, and temperature is 900 DEG C, deposits 8h.
(4) densification process
Carburizing, by 50wt% phenolic resin, the phenolic aldehyde tree of 35wt% ethylene glycol and 8wt% are cracked using phenolic resin first
Rouge curing agent uniformly mixes, and is configured to maceration extract, impregnates to the printing biscuit for carrying out chemical vapor deposition.Later by zero
Part takes out after drying 2h at 60 DEG C, then goes at 100 DEG C and continue to dry 12h.After drying, part is put into debinding furnace, from 0 DEG C
220 DEG C of degreasing 2h are warming up to, then are warming up to 400 DEG C of degreasing 3h from 220 DEG C, finally the degreasing 6h at 300 DEG C.
Siliconising is carried out to part after carburizing, it is put into graphite crucible with silicon powder, then be put into togerther vacuum sintering furnace.With
5 DEG C/min is warming up to 900 DEG C, is passed through nitrogen heat preservation 2h；Again with 5 DEG C/min, 1400 DEG C are warming up to, keeps the temperature 0.5h, then quickly
Nitrogen is taken out, heat preservation terminates, and obtains short carbon fiber toughened ceramic part.
Claims (9)
1. one kind is based on the molding short carbon fiber toughened ceramic composite forming method of direct write, which is characterized in that including following
Step:
Step 1 designs 3D model on computers and is converted into hierarchical path file importing 3D printer；
Step 2 prepares the short carbon fiber toughened ceramic slurry with shear shinning rheological characteristic, and is supplied to slurry syringe；
Step 3, screw rod work, provides homogeneous pressure, short carbon fiber toughened ceramic slurry is supplied to 3D printing by slurry syringe
The print head of machine；
Step 4, the short carbon fiber toughened ceramic slurry at print-head nozzle are squeezed under the pressure effect of screw rod from jet expansion
Out；
Step 5, when carrying out part 3D printing work, process control two-dimension moving platform drives print head on workbench
It is moved according to the cross-section data of current layer model, squeezes out filament and press printing path laying, form the section；
Step 6, when completing model behind the section of preceding layer, lifting device will decline together a layering with workbench
Thickness；
Step 7 repeats step 3 to step 6 and obtains printing biscuit until part printing is completed；
Step 8 carries out chemical vapor deposition to printing biscuit or impregnating cracking technology prepares fiber interface layer；
Step 9 further increases part consistency using densification processes such as liquid Si infiltration or hot isostatic pressings, that is, completes to be based on
The molding of the short carbon fiber toughened ceramic composite of direct write forming technique.
2. one kind according to claim 1 is based on the molding short carbon fiber toughened ceramic composite forming method of direct write,
It is characterized in that, in the step 2, short carbon fiber toughened ceramic slurry the preparation method is as follows:
The first step, be (2~5) by volume ratio: 1 carbon fiber powder and ceramic powders uniformly mixes；
Mass ratio is (14~17): (0.4~0.8): (0.05~0.2) by second step: the deionized water of (0.05~0.30),
The powder in the first step is added in gelling agent and dispersing agent, stirs evenly, and is configured to the short carbon fiber that total solid phase is 14%~26%
Toughening ceramic slurry.
3. one kind according to claim 2 is based on the molding short carbon fiber toughened ceramic composite forming method of direct write,
It is characterized in that, according to needed for part performance, using 70 μm -200 μm of short carbon fiber and granularity for 0.5 μ in the first step
M-500 μm of ceramic powders；Ceramic powders select alumina powder, alpha-silicon nitride powders or silicon carbide powder；
In the second step, dispersing agent by single in tetramethyl aqua ammonia, calgon, Darvan-c, polyethylene glycol or
Mixed preparing forms；Gelling agent can be made of single in guar gum, xanthan gum, sodium carboxymethylcellulose or mixing.
4. one kind according to claim 1 is based on the molding short carbon fiber toughened ceramic composite forming method of direct write,
It is characterized in that, in the step 8, if carrying out chemical vapor deposition, deposition pressure 2500Pa- using trichloromethyl silane
3500Pa, temperature are 900 DEG C -1200 DEG C, and sedimentation time is in 4h or more.
5. one kind according to claim 1 is based on the molding short carbon fiber toughened ceramic composite forming method of direct write,
It is characterized in that, in the step 8, if carrying out infiltration pyrolysis, technique using Polycarbosilane are as follows: using dimethylbenzene as solvent, prepare
The Polycarbosilane solution of 30-60wt% impregnates 30min；Crack heating process are as follows: 5-10 DEG C/min, be warming up to 1100-1300
DEG C, keep the temperature 2-4h.
6. one kind according to claim 1 is based on the molding short carbon fiber toughened ceramic composite forming method of direct write,
It is characterized in that, phenolic resin cracking carburizing, siliconising or hot isostatic pressing can be used in densification process in the step 9.
7. one kind according to claim 6 is based on the molding short carbon fiber toughened ceramic composite forming method of direct write,
It is characterized in that, carburizing is cracked according to phenolic resin, the specific process is as follows:
The first step, by 50wt%-65wt% phenolic resin, the phenolic resin of 35-55wt% ethylene glycol and 8wt%-20wt% are solid
Agent uniformly mixes, and is configured to maceration extract, impregnates to part；
Second step takes out after the part after dipping is dried 2h at 60 DEG C, then goes at 100 DEG C and continue to dry 12h；
Third step, the part after drying are put and carry out degreasing at different temperatures, and phenolic resin cracking technology is completed.
8. one kind according to claim 7 is based on the molding short carbon fiber toughened ceramic composite forming method of direct write,
It is characterized in that, part is first warming up to 220-260 DEG C of degreasing 2-3h from 0 DEG C, then rise from 220-260 DEG C in the third step
Temperature is to 400 DEG C of degreasings 3-4h, last 300-500 DEG C of heat preservation degreasing 6-10h.
9. one kind according to claim 6 is based on the molding short carbon fiber toughened ceramic composite forming method of direct write,
It is characterized in that, according to siliconising, the specific process is as follows:
Part and silicon powder are put into graphite crucible, then put it into vacuum sintering furnace by the first step；
Second step, is warming up to 900-1200 DEG C by 5-15 DEG C/min, and is passed through nitrogen heat preservation 2-4h；
Third step 5-10 DEG C/min, is warming up to 1400-1600 DEG C, keeps the temperature 0.5-1h；
4th step, quickly takes out nitrogen, and heat preservation terminates.
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| CN112186257A (en) * | 2020-08-28 | 2021-01-05 | 西安交通大学 | Three-dimensional lithium battery preparation method based on direct-writing forming 3D printing technology |
| EP3766668A1 (en) * | 2019-07-18 | 2021-01-20 | Northrop Grumman Innovation Systems, Inc. | Additive manufacturing methods for forming high-temperature composite structures and related structures |
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| CN115806440A (en) * | 2022-11-09 | 2023-03-17 | 福建星海通信科技有限公司 | Embedded direct-writing 3D printing preparation method of steel fiber ceramic composite material |
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| CN109761613A (en) * | 2019-02-28 | 2019-05-17 | 西安交通大学 | The short carbon fiber toughened ceramic composite forming method of gel injection-moulding based on 3D printing |
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| CN110228995A (en) * | 2019-06-24 | 2019-09-13 | 西北工业大学 | A kind of vacuum sintering method of photocuring 3D printing aluminium oxide ceramics biscuit |
| US11814324B2 (en) | 2019-07-18 | 2023-11-14 | Northrop Grumman Systems Corporation | Additive manufacturing methods for forming high-temperature composite structures and related structures |
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| WO2021120636A1 (en) * | 2019-12-18 | 2021-06-24 | 华中科技大学 | Method for preparing, by 3d printing, carbon fiber reinforced sic ceramic matrix composite material |
| CN111662091A (en) * | 2020-06-15 | 2020-09-15 | 中国科学院上海硅酸盐研究所 | Short carbon fiber reinforced Csf/SiC ceramic matrix composite material and preparation method thereof |
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| CN112186257B (en) * | 2020-08-28 | 2021-12-28 | 西安交通大学 | Three-dimensional lithium battery preparation method based on direct-writing forming 3D printing technology |
| CN112186257A (en) * | 2020-08-28 | 2021-01-05 | 西安交通大学 | Three-dimensional lithium battery preparation method based on direct-writing forming 3D printing technology |
| CN112592164A (en) * | 2020-11-26 | 2021-04-02 | 南京工业大学东海先进硅基材料研究院 | Preparation method of high-purity quartz ceramic direct-writing free forming |
| CN113666764A (en) * | 2021-09-15 | 2021-11-19 | 北京理工大学 | Direct-writing forming method for short carbon fiber reinforced silicon carbide ceramic composite material ink |
| CN113666764B (en) * | 2021-09-15 | 2022-05-20 | 北京理工大学 | Direct-writing forming method for short carbon fiber reinforced silicon carbide ceramic composite material ink |
| CN114477967A (en) * | 2022-01-12 | 2022-05-13 | 西安理工大学 | Method for printing oriented flake crystalline alumina reinforced ceramic by surface exposure based on micro-channel |
| CN115806440A (en) * | 2022-11-09 | 2023-03-17 | 福建星海通信科技有限公司 | Embedded direct-writing 3D printing preparation method of steel fiber ceramic composite material |
| CN115806440B (en) * | 2022-11-09 | 2023-11-07 | 福建星海通信科技有限公司 | Embedded direct-writing 3D printing preparation method of steel fiber ceramic composite material |
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