CN110076325A - A kind of carbon foam-silicon carbide-metallic composite preparation method - Google Patents
A kind of carbon foam-silicon carbide-metallic composite preparation method Download PDFInfo
- Publication number
- CN110076325A CN110076325A CN201910316617.7A CN201910316617A CN110076325A CN 110076325 A CN110076325 A CN 110076325A CN 201910316617 A CN201910316617 A CN 201910316617A CN 110076325 A CN110076325 A CN 110076325A
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- carbon foam
- silicon carbide
- alloy
- metallic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
- B22D23/04—Casting by dipping
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1005—Pretreatment of the non-metallic additives
- C22C1/101—Pretreatment of the non-metallic additives by coating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1005—Pretreatment of the non-metallic additives
- C22C1/1015—Pretreatment of the non-metallic additives by preparing or treating a non-metallic additive preform
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
A kind of carbon foam-silicon carbide-metallic composite preparation method, it is characterized in that, including carbon foam, silicon carbide interface and metallic matrix, the steep that wall section of the carbon foam is round, ellipse or triangle, having a size of 1-10 μm, the porosity of carbon foam is 95~99.5%, and draw ratio is 5~20；The silicon carbide interface is evenly coated inside carbon foam and on surface, with a thickness of 5 ~ 50 μm；The metallic matrix is one of aluminium alloy, magnesium alloy, copper alloy, tin alloy, is filled in gap.This composite material make full use of carbon foam low-density and unique tridimensional network, and have good toughness, intensity and antioxygenic property, be able to satisfy the demand of multiple fields.
Description
Technical field
The present invention relates to a kind of preparation method of composite material, in particular to a kind of carbon foam-silicon carbide-aluminium composite material
Preparation method.
Background technique
Carbon foam is that a kind of steeped by hole has the light porous of tridimensional network with what hole steep that wall interconnected formed
Material.Other than the traditional performance with carbon material, also have density is small, intensity is high, anti-thermal shock, it is anti-oxidant and it is good every
Heat inhales the physical and chemical properties such as wave.It can be widely applied to energy storage, aerospace, shipping industry, communication electronics work
Many technical fields such as industry, building field.Nowadays carbon foam mainly uses pitch, mesophase pitch, coal, thermosetting resin etc.
It as raw material, is prepared using sintered and foamed method and atmosphere protection pyrolysismethod, and it is controlled by control technique and is graphitized journey
Degree is to realize the heat-insulated and thermally conductive of carbon foam.But since carbon foam antioxygenic property is poor, can not use under hot environment again.
Chemical vapor deposition (CVD) is a kind of quickly and effectively dense coating preparation process, and the interface of SiC and C
Chemical stability is high, and thermal expansion coefficient difference is minimum, prepares primary choosing when CVD SiC coating is carbon foam oxidation protection
It selects.Under high temperature, SiC coating is carried out in carbon foam facilitates oxygen to material internal diffusion, thus protection materials internal structure
It is seriously damaged it not, then penetrates into metal, improve the antioxygenic property and mechanical property of composite material.
The Chinese patent that patent is CN104478475B disclose a kind of high temperature resistance and high strength SiC coat carbon foam it is compound every
Hot material and preparation method thereof.The high temperature resistance and high strength SiC cladding carbon foam composite heat-insulated material is one kind by carbon foam
It is constituted with carbonization silica aerogel；Temperature tolerance improves about 100 DEG C than pure carbon foam at 690 ~ 700 DEG C in its air atmosphere,
Apparent density is in 0.4 ~ 0.6g/cm3, compression strength is in 11 ~ 15MPa, and room temperature thermal conductivity is at 0.4 ~ 0.6W/ (m.K).Its preparation side
Method is that silicon dioxide gel is injected into the hole of carbon foam, by sol-gel, aging and is dried to obtain carbon foam increasing
Then strong silica aerogel composite heat-insulated material carries out high-temperature heat treatment under inert atmosphere protection, to prepare one
Kind high temperature resistance and high strength SiC coats carbon foam composite heat-insulated material.The invention has the advantages that materials are simple and technique is simple and direct, work
Skill process is easy to operate, large-scale production easy to accomplish.
Application No. is a kind of CVI-SiC nano wires of the Chinese patent of CN201810591706.8 to enhance compound carbon foam material
Material and preparation method thereof is made of three-dimensional netted carbon foam and the SiC nanowire being grown in carbon foam, the carbon foam
Steep that wall section is round, ellipse or triangle, porosity 95~99.5%, 10 ~ 50 μm of pore size；It is SiC nanometers described
Line is that the tip of purity >=99% has the beta-SiC nano-wire of metal ball, 10~80nm of nanowire diameter, and length is 0.5~50 μ
m.The advantages that composite foam has density low, and large specific surface area, temperature tolerance is good, and crushing resistance is good, can be used for supercapacitor, store up
Energy material, catalyst carrier etc..
The cermet for disclosing a kind of fibre reinforced application No. is the Chinese patent of CN201810233983.1 is compound
Material, by carbon fiber precast body, boundary layer, ceramic matrix and metallic matrix composition, metal is aluminium alloy, magnesium alloy, copper alloy,
One of tin alloy, ceramics are SiC, which is 1.8 ~ 3.8g/cm3, and it is different which also discloses preparation
The method of ceramal composite material.This composite material has short preparation period, and the advantage that density is adjustable overcomes ceramics
Brittleness and low-density, can meet it is multi-field to ceramic matric composite the needs of.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, it is desirable to provide carbon foam-silicon carbide-aluminium is multiple
The preparation method of condensation material, gives full play to that carbon foam density is small and the advantage of tridimensional network, widens carbon foam application neck
Domain.
A kind of carbon foam-silicon carbide-metallic composite preparation method, which is characterized in that including carbon foam, silicon carbide
Interface and metallic matrix, the steep that wall section of the carbon foam are round, ellipse or triangle, having a size of 1-10 μm, carbon foam
Porosity be 95~99.5%, draw ratio be 5~20；The silicon carbide interface is evenly coated inside carbon foam and surface
On, with a thickness of 5 ~ 50 μm；The metallic matrix is one of aluminium alloy, magnesium alloy, copper alloy, tin alloy, is filled in gap
In；This carbon foam-silicon carbide-metallic composite the preparation method is as follows:
(1) melamine foamed plastic after cleaning is put into vacuum drying oven, is passed through nitrogen, flow is 800 ~ 5000ml/min, heating
To 1000 ~ 1300 DEG C, heating rate is 2 ~ 6 DEG C/min, keeps the temperature 20 ~ 60min, furnace cooling；
(2) melamine carbon foam is sequentially placed into acetone and ethyl alcohol and carries out 10 ~ 20min of ultrasonic cleaning, drying at room temperature；
(3) the melamine carbon foam after cleaning is put into vacuum drying oven, is passed through trichloromethyl silane, H2And Ar, H2, Ar and
CH3SiCl3Ratio is 5 ~ 15:5 ~ 15:1, and temperature is 950 ~ 1250 DEG C, and system pressure is 10 ~ 1000Pa, and the time is 5 ~ 20h；
(4) sample obtained in (4) is fitted into mold, is put into vacuum drying oven and is dried；
(5) sample of the dress dried in step (4) in a mold will be put into progress alloy molten solution infiltration in high temperature furnace, cooling
Mold is taken out afterwards and is dismantled, and sanding and polishing is carried out to sample, obtains ultralight carbon foam-silicon carbide-metallic composite.
Technical effect of the invention:
(1) guarantee that it is strong while the low-density of carbon foam and unique tridimensional network can reduce composite density
Degree；(2) antioxygenic property of composite material can be improved in silicon carbide interface, and silicon carbide and C and metal have good knot
Conjunction property；(3) introducing of metallic matrix increases the toughness and intensity of composite material, and that has widened this material uses field.
Specific embodiment
Combined with specific embodiments below, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate the present invention
Rather than limit the scope of the invention, after the present invention has been read, those skilled in the art are to various equivalences of the invention
It is as defined in the appended claims that the modification of form falls within the application.
Embodiment 1
A kind of carbon foam-silicon carbide-metallic composite preparation method, which is characterized in that including carbon foam, silicon carbide interface
And metallic matrix, the steep that wall section of the carbon foam are circle, having a size of 2 μm, the porosity of carbon foam is 95, and draw ratio is
10；The silicon carbide interface is evenly coated inside carbon foam and on surface, with a thickness of 10 μm；The metallic matrix is aluminium conjunction
Gold is filled in gap；This carbon foam-silicon carbide-aluminium alloy composite materials the preparation method is as follows:
(1) melamine foamed plastic after cleaning is put into vacuum drying oven, is passed through nitrogen, flow 1500ml/min is warming up to
1100 DEG C, heating rate is 3 DEG C/min, keeps the temperature 40min, furnace cooling；
(2) melamine carbon foam is sequentially placed into acetone and ethyl alcohol and carries out ultrasonic cleaning 10min, drying at room temperature；
(3) the melamine carbon foam after cleaning is put into vacuum drying oven, is passed through trichloromethyl silane, H2And Ar, H2, Ar and
CH3SiCl3Ratio is 8:9:1, and temperature is 1100 DEG C, system pressure 500Pa, time 10h；
(4) sample obtained in (4) is fitted into mold, is put into vacuum drying oven and is dried；
(5) sample of the dress dried in step (4) in a mold will be put into progress molten aluminium alloy infiltration in high temperature furnace, drop
Mold is taken out after temperature and is dismantled, and sanding and polishing is carried out to sample, obtains ultralight carbon foam-silicon carbide-aluminium alloy composite materials.
Embodiment 2
A kind of carbon foam-silicon carbide-metallic composite preparation method, which is characterized in that including carbon foam, silicon carbide interface
And metallic matrix, the steep that wall section of the carbon foam are round, ellipse or triangle, and having a size of 2 μm, the porosity of carbon foam
It is 98%, draw ratio 15；The silicon carbide interface is evenly coated inside carbon foam and on surface, with a thickness of 20 μm；It is described
Metallic matrix is magnesium alloy, is filled in gap；This carbon foam-silicon carbide-composite material of magnesium alloy the preparation method is as follows:
(1) melamine foamed plastic after cleaning is put into vacuum drying oven, is passed through nitrogen, flow 3000ml/min is warming up to
1200 DEG C, heating rate is 5 DEG C/min, keeps the temperature 45min, furnace cooling；
(2) melamine carbon foam is sequentially placed into acetone and ethyl alcohol and carries out ultrasonic cleaning 120min, drying at room temperature；
(3) the melamine carbon foam after cleaning is put into vacuum drying oven, is passed through trichloromethyl silane, H2And Ar, H2, Ar and
CH3SiCl3Ratio is 10:10:1, and temperature is 1150 DEG C, system pressure 800Pa, time 12h；
(4) sample obtained in (4) is fitted into mold, is put into vacuum drying oven and is dried；
(5) sample of the dress dried in step (4) in a mold will be put into progress magnesium alloy melt infiltration in high temperature furnace, drop
Mold is taken out after temperature and is dismantled, and sanding and polishing is carried out to sample, obtains ultralight carbon foam-silicon carbide-composite material of magnesium alloy.
Claims (1)
1. a kind of carbon foam-silicon carbide-metallic composite preparation method, which is characterized in that including carbon foam, silicon carbide circle
Face and metallic matrix, the steep that wall section of the carbon foam is round, ellipse or triangle, having a size of 1-10 μm, carbon foam
Porosity is 95~99.5%, and draw ratio is 5~20；The silicon carbide interface is evenly coated inside carbon foam and on surface,
With a thickness of 5 ~ 50 μm；The metallic matrix is one of aluminium alloy, magnesium alloy, copper alloy, tin alloy, is filled in gap；
This carbon foam-silicon carbide-metallic composite the preparation method is as follows:
(1) melamine foamed plastic after cleaning is put into vacuum drying oven, is passed through nitrogen, flow is 800 ~ 5000ml/min, heating
To 1000 ~ 1300 DEG C, heating rate is 2 ~ 6 DEG C/min, keeps the temperature 20 ~ 60min, furnace cooling；
(2) melamine carbon foam is sequentially placed into acetone and ethyl alcohol and carries out 10 ~ 20min of ultrasonic cleaning, drying at room temperature；
(3) the melamine carbon foam after cleaning is put into vacuum drying oven, is passed through trichloromethyl silane, H2And Ar, H2, Ar and
CH3SiCl3Ratio is 5 ~ 15:5 ~ 15:1, and temperature is 950 ~ 1250 DEG C, and system pressure is 10 ~ 1000Pa, and the time is 5 ~ 20h；
(4) sample obtained in (4) is fitted into mold, is put into vacuum drying oven and is dried；
(5) sample of the dress dried in step (4) in a mold will be put into progress alloy molten solution infiltration in high temperature furnace, cooling
Mold is taken out afterwards and is dismantled, and sanding and polishing is carried out to sample, obtains ultralight carbon foam-silicon carbide-metallic composite.
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| CN201910316617.7A CN110076325A (en) | 2019-04-19 | 2019-04-19 | A kind of carbon foam-silicon carbide-metallic composite preparation method |
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| CN201910316617.7A CN110076325A (en) | 2019-04-19 | 2019-04-19 | A kind of carbon foam-silicon carbide-metallic composite preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110572997A (en) * | 2019-08-13 | 2019-12-13 | 西安理工大学 | preparation method of novel foam carbon electromagnetic shielding composite material |
| CN115745652A (en) * | 2022-11-22 | 2023-03-07 | 西北工业大学太仓长三角研究院 | Light-weight bearing multifunctional SiC aerogel composite material and preparation method thereof |
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