CN108484213A - A kind of ceramet is composite porous and preparation method thereof - Google Patents
A kind of ceramet is composite porous and preparation method thereof Download PDFInfo
- Publication number
- CN108484213A CN108484213A CN201810611574.0A CN201810611574A CN108484213A CN 108484213 A CN108484213 A CN 108484213A CN 201810611574 A CN201810611574 A CN 201810611574A CN 108484213 A CN108484213 A CN 108484213A
- Authority
- CN
- China
- Prior art keywords
- ceramet
- porous
- composite porous
- slurry
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63416—Polyvinylalcohols [PVA]; Polyvinylacetates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3256—Molybdenum oxides, molybdates or oxide forming salts thereof, e.g. cadmium molybdate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/405—Iron group metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/407—Copper
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/444—Halide containing anions, e.g. bromide, iodate, chlorite
- C04B2235/445—Fluoride containing anions, e.g. fluosilicate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
- C04B2235/6022—Injection moulding
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Powder Metallurgy (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
It is composite porous and preparation method thereof that the present invention provides a kind of ceramet, by kaolin, after alumina powder and industrial Aluminum sol mixing, mineralizer is added and sintering aid is uniformly mixed again, the ceramic powder mixed and solvent and binder are hybridly prepared into slurry, then it is poured into the freezing mold for being placed with foam metal, it is freeze-dried after slurry cryocoagulation, obtain ceramet compound green compact, then low temperature reaction sintering under an inert atmosphere, finally obtained ceramet is composite porous, the beneficial effects of the present invention are, porous metals and Ceramic Composite are integrated, porous ceramics is set to have conduction, the function of sensing and heating, convenient for the integrated or multifunction of downstream application, it is being catalyzed, the fields such as absorption have fabulous application prospect；And this method is raw materials used is easy to get, simple and reliable process has a clear superiority in industrialized production.
Description
Technical field
The present invention relates to ceramic composite preparing technical fields, and in particular to a kind of ceramet it is composite porous and
Preparation method.
Background technology
Porous material generally have relative density is low, specific strength is high, specific surface area is high, light-weight, sound insulation, it is heat-insulated, infiltration
The advantages that property is good, wherein the electromagnetism due to metal and highly thermally conductive characteristic, make porous metal material in sensor, electromagnetic shielding, electricity
The functional areas such as pole material and heat exchange have good application value, and porous ceramics high temperature resistant, corrosion resistant feature make it
There is important application value in fields such as filtering flow, catalyst carrier and sorbing materials.By porous metals and porous ceramics
It is complex as a whole, makes it have the denominator of the two, it will greatly extend its application field.
Currently, due to the difference on porous ceramics and porous metals preparation process, it is difficult to two kinds of Material claddings are integrated,
And due to the high sintering temperature of porous ceramics, it is difficult compound with metal progress to lead to it.
In view of drawbacks described above, creator of the present invention proposes the present invention by prolonged research and practice.
Invention content
The present invention utilizes commercially available foam metal, selects the lower ceramic powder of sintering temperature, in conjunction with freeze drying process, system
It is composite porous for the ceramet for going out high porosity.The technical solution adopted by the present invention is, provides a kind of ceramet
Composite porous preparation method comprising following steps：
The first step：By mass ratio 1:0.3-0.6：Kaolin, alumina powder and the industrial Aluminum sol of 1.2-3.1 is placed in mixed
In batch can, after mixing drying sieving, mineralizer and sintering aid is added, after mixing is dried and is sieved again, obtains mixed powder A；
Second step：Mixed powder A described in the first step and solvent and binder are placed in mixing tank, alumina balls are added,
6h~12h is mixed, after pouring into beaker, antifoaming agent is added, de-bubble 4-10min, obtains the slurry of stable dispersion under vacuum, wherein
The mixed powder A accounts for the 5%-40% of the slurry total volume；
Third walks：Porous foam metal is cleaned by ultrasonic in acetone, dries and cut into required shape, by institute
It states porous foam metal to be put into the mold consistent with its shape, then the mold is placed in refrigerating plant and is carried out at freezing
Reason, and cryogenic temperature is -196-0 DEG C；
4th step：Slurry described in second step is poured into mold described in step 3, and it is described more so that the slurry was not had
Hole foam metal obtains the slurry of solidification；
5th step：By the slurry after being solidified described in the 4th step in article that temperature is -10 DEG C -40 DEG C, pressure is 1~100Pa
It is freeze-dried 1~5 day under part, obtains porous ceramics/metal composite green compact；
6th step：Compound green compact described in 5th step is placed in the alumina crucible of sealing, is carried out in an inert atmosphere anti-
It should be sintered, sintering temperature is 900-1300 DEG C, keeps the temperature 1-3h, and heating rate is 1-5 DEG C/min, and final acquisition ceramic/metal is more
Hole composite material.
Preferably, the industrial Aluminum sol solid concentration described in the first step is 25%, and the colloidal solid in the colloidal sol
Size is 20-80nm；Kaolin described in the first step need to pass through 900 DEG C of high-temperature calcinations, and make its particle diameter distribution in 0.2-1 through ball milling
Between μm；Alumina powder described in the first step is α-Al2O3, and the diameter of particle is 1-2 μm.
Preferably, the mineralizer described in the first step is aluminum fouoride, and the granularity of the mineralizer is 5-10 μm, institute
The addition for stating mineralizer accounts for the 8-12% of the mixed powder A gross masses.
Preferably, the sintering aid described in the first step is one kind in MoO3, MnO2 or CuO, and the granularity of the sintering aid
It it is 5-10 μm, the addition of the sintering aid accounts for the 6-10% of the mixed powder A gross masses.
Preferably, the solvent described in second step is one kind in deionized water, the tert-butyl alcohol or down alkene.
Preferably, the binder described in second step is one kind in polyvinyl alcohol, polyvinyl butyral or gelatin, and institute
State the 0.5%-1.6% that binder accounts for mixed powder A mass described in the first step.
Preferably, the antifoaming agent described in second step is n-butanol, and the antifoaming agent accounts for mixed powder A matter described in the first step
The 0.3%-0.5% of amount.
Preferably, it is iron, copper, nickel, titanium, gold, zirconium, one kind in molybdenum or described above that third, which walks the porous foam metal,
One kind in the alloy of porous foam metal, and the aperture of the porous foam metal is 0.1-5mm.
Preferably, the inert gas described in the 6th step is high pure nitrogen or argon gas.
A kind of ceramet prepared using the above method is composite porous.
Compared with the prior art, the beneficial effects of the present invention are：
1, porous metals and Ceramic Composite are integrated, so that porous ceramics is had the function of conductive sensing and heating, just
In the integrated or multifunction of downstream application；
2, the composite porous porosity of prepared ceramic/metal can be adjusted between 40%-90% ranges, aperture
It is adjustable in 1 μm of -70 μ m；
3, during due to freeze forming, the good heat conductivity of foam metal can form temperature ladder in its hole muscle surrounding
It spends, induction ice crystal oriented growth, ceramic particle aligns in the slurry for being, forms unique pore structure, in catalysis, absorption etc.
Field has fabulous application prospect；
4, this method is raw materials used is easy to get, and simple and reliable process has a clear superiority in industrialized production.
Specific implementation mode
With reference to embodiments, the forgoing and additional technical features and advantages are described in more detail.
Embodiment 1
It is composite porous to present embodiments provide a kind of ceramet comprising following steps：
The first step：The kaolin, alumina powder and industrial Aluminum sol for weighing 100g, 42g and 205g respectively are placed in batch mixing
In tank, it is ball-milling medium that 400g aluminium oxide abrading-ball and 150ml absolute ethyl alcohols, which is added, after continuously mixing 24 hours, by slurry in 80
DEG C drying sieving, add the aluminum fluoride of 8.5g, the molybdenum oxide powder of 6g, 400g aluminium oxide abrading-ball and 100ml absolute ethyl alcohols, mix
It closes 8 hours, 80 DEG C dried 100 mesh steel sieve, and be uniformly mixed powder A；
Second step：Mixed powder A described in the first step and solvent deionized water and binder poly-vinyl alcohol solution are added mixed
In batch can, 300g alumina balls are added, mix 6h~12h at room temperature, after pouring into beaker, are added after antifoaming agent n-butanol true
The lower de-bubble 4-10min of sky, obtains the slurry of stable dispersion, wherein a concentration of 10wt% of bonding agent poly-vinyl alcohol solution, and
The polyvinyl alcohol accounts for the 0.5% of the mixed powder A mass, and the mixed powder A accounts for the 30% of the slurry total volume, institute
State antifoaming agent n-butanol accounts for the mixed powder A mass 0.3%.
Third walks：The foam copper that mean pore size is 400 μm is chosen, it is cleaned by ultrasonic after twenty minutes with acetone, it will
The foam copper is put into the mold consistent with its shape, and then mold is placed in refrigerating plant, and cryogenic temperature is -50 DEG C,
After waiting for 30 minutes, its temperature is made to reach stable.
4th step：Slurry described in second step is poured into third to walk in the mold, the slurry is made not have the foam copper,
Obtain the slurry of solidification；.
5th step：It is cold less than under conditions of 50Pa for -10 DEG C, pressure that slurry after being solidified described in 4th step is placed in temperature
It is lyophilized dry 4 days, obtains porous ceramic material compound green compact；
6th step：Ceramet compound green compact described in 5th step is placed in the alumina crucible of sealing, in high-purity argon
Reaction-sintered is carried out in gas, sintering temperature is 950 DEG C, keeps the temperature 3 hours, heating rate is 4 DEG C/min, finally obtains ceramet
It is composite porous.
Wherein, the industrial Aluminum sol solid concentration described in the first step is 25%, and the colloidal solid in colloidal sol is big
Small is 20-80nm；Kaolin described in the first step need to pass through 900 DEG C of high-temperature calcinations, and make its particle diameter distribution in 0.2-1 through ball milling
Between μm；Alumina powder described in the first step is α-Al2O3, and the diameter of particle is 1-2 μm, the mineralizer and described
The granularity of sintering aid is 5-10 μm.
The composite porous porosity of ceramet that the present embodiment is prepared is 65%, the average pore size that mercury injection method is measured
It is 12 μm, specific surface area 6.5m2/g。
Therefore, because the thermal conductivity that metal is high, during freeze forming, ceramic particle can be in porous metals hole muscle four
Week forms the special porous structure of divergent shape, and it is all that extremely advantageous, prepared product has that this, which spreads fluid or adsorbs,
There is the electromagnetic property of metal, also have both the high-specific surface area of porous ceramics and the characteristics of aperture is easily adjusted, composite material can be made to exist
While filtering flow or absorption, have the function of conductive, sensing and heating etc., convenient for the integrated or multi-functional of downstream application
Change, there is fabulous application prospect in fields such as catalysis, absorption；And kaolin used in this method is through high-temperature calcination and ball milling
White powder, other reagents are commercial product, are analytical reagents in addition to industrial Aluminum sol, raw material is easy to get, simple for process
Reliably, it has a clear superiority in industrialized production.
Embodiment 2
The present embodiment difference from example 1 is that：
The quality of kaolin described in the first step, the alumina powder and the industrial Aluminum sol is respectively 100g, 20g
And 309g；
Mixed powder A described in second step accounts for the 10% of the slurry total volume；
Porous foam metal described in third step is the nickel foam that average pore size is 100 μm；
Sintering temperature described in 6th step is 1200 DEG C, soaking time 2h.
The composite porous porosity of ceramet that the present embodiment is prepared is 80%, the average pore size that mercury injection method is measured
It is 8.3 μm, specific surface area 3.5m2/g。
Embodiment 3
The present embodiment difference from example 1 is that：
Solvent described in second step is the tert-butyl alcohol, and the bonding agent is that the polyvinyl butyral of a concentration of 10wt% is water-soluble
Liquid, and the mass fraction of the binder accounts for the 0.8% of the mixed powder A mass；
Cryogenic temperature described in 4th step is -30 DEG C；
The composite porous porosity of ceramet that the present embodiment is prepared is 60%, the average pore size that mercury injection method is measured
It is 24 μm, specific surface area 2.1m2/g。
Embodiment 4
The present embodiment difference from example 1 is that：
The quality of kaolin described in the first step, the alumina powder and the industrial Aluminum sol is respectively 100g, 62g
And 104g；
It is the foamed iron that average pore size is 5mm that third, which walks the porous foam metal,；
Sintering temperature described in 6th step is 1300 DEG C.
The composite porous porosity of ceramet that the present embodiment is prepared is 55%, the average pore size that mercury injection method is measured
It is 13 μm, specific surface area 2.3m2/g。
Embodiment 5
The present embodiment difference from example 1 is that：
Mixed powder A described in second step accounts for the 5% of the slurry total volume；
It is the foam gold that average pore size is 200 μm that third, which walks the porous foam metal,；
Sintering temperature described in 6th step is 925 DEG C.
The composite porous porosity of ceramet that the present embodiment is prepared is 90%, the average pore size that mercury injection method is measured
It is 37 μm, specific surface area 4.6m2/g。
Embodiment 6
The present embodiment difference from example 1 is that：
It is the foamed molybdenum that average pore size is 3mm that third, which walks the porous foam metal,；
Sintering temperature described in 6th step is 1300 DEG C.
The composite porous porosity of ceramet that the present embodiment is prepared is 60%, the average pore size that mercury injection method is measured
It is 24 μm, specific surface area 1.6m2/g。
Embodiment 7
The present embodiment difference from example 1 is that：
Solvent described in second step is down alkene, and the bonding agent is polyvinyl butyral aqueous solution, and the binder
Mass fraction accounts for the 0.8% of the mixed powder A mass, and the slurry is mixed in the environment of 50 DEG C；
Cryogenic temperature described in 4th step is 0 DEG C；
The composite porous porosity of ceramet that the present embodiment is prepared is 60%, the average pore size that mercury injection method is measured
It is 42 μm, specific surface area 3.6m2/g。
Embodiment 8
The present embodiment difference from example 1 is that：
Mixed powder A described in second step accounts for the 40% of the slurry total volume；
It is the foam zirconium that average pore size is 5mm that third, which walks the porous foam metal,；
Sintering temperature described in 6th step is 1300 DEG C.
The composite porous porosity of ceramet that the present embodiment is prepared is 40%, the average pore size that mercury injection method is measured
It is 7 μm, specific surface area 2.8m2/g。
Embodiment 9
The present embodiment difference from example 1 is that：
Sintering aid described in the first step is that the sintering aid described in the first step is copper oxide, and the average particle size of the sintering aid is
8μm；
Antifoaming agent n-butanol described in second step accounts for the 0.5% of the mixed powder A mass；
It is the foam iron-nickel alloy that average pore size is 3mm that third, which walks the porous foam metal,.
The composite porous porosity of ceramet that the present embodiment is prepared is 56%, the average pore size that mercury injection method is measured
It is 48 μm, specific surface area 6.2m2/g。
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. a kind of preparation method that ceramet is composite porous, which is characterized in that it includes the following steps：
The first step：By mass ratio 1:0.3-0.6：Kaolin, alumina powder and the industrial Aluminum sol of 1.2-3.1 is placed in mixing tank
In, after mixing drying sieving, mineralizer and sintering aid is added, after mixing is dried and is sieved again, obtains mixed powder A；
Second step：Mixed powder A described in the first step and solvent and binder are placed in mixing tank, alumina balls, mixing is added
After pouring into beaker, antifoaming agent is added in 6h~12h, and de-bubble 4-10min, obtains the slurry of stable dispersion under vacuum, wherein described
Mixed powder A accounts for the 5%-40% of the slurry total volume；
Third walks：Porous foam metal is cleaned by ultrasonic in acetone, dries and cut into required shape, it will be described more
Hole foam metal is put into the mold consistent with its shape, and then the mold is placed in refrigerating plant and carries out freezing processing,
And cryogenic temperature is -196-0 DEG C；
4th step：Slurry described in second step is poured into mold described in step 3, and the slurry is made not have the porous bubble
Foam metal obtains the slurry of solidification；
5th step：By the slurry after being solidified described in the 4th step under conditions of temperature is -10 DEG C -40 DEG C, pressure is 1~100Pa
Freeze-drying 1~5 day obtains porous ceramics/metal composite green compact；
6th step：Compound green compact described in 5th step is placed in the alumina crucible of sealing, carries out reaction burning in an inert atmosphere
Knot, sintering temperature are 900-1300 DEG C, keep the temperature 1-3h, and heating rate is 1-5 DEG C/min, and it is porous multiple finally to obtain ceramic/metal
Condensation material.
2. the composite porous preparation method of ceramet according to claim 1, which is characterized in that institute in the first step
The industrial Aluminum sol solid concentration stated is 25%, and the colloidal solid size in the colloidal sol is 20-80nm；It is high described in the first step
Ridge soil need to pass through 900 DEG C of high-temperature calcinations, and make its particle diameter distribution between 0.2-1 μm through ball milling；Alumina powder described in the first step
Body is α-Al2O3, and the diameter of particle is 1-2 μm.
3. the composite porous preparation method of ceramet according to claim 1, which is characterized in that institute in the first step
The mineralizer stated is aluminum fouoride, and the granularity of the mineralizer is 5-10 μm, and the addition of the mineralizer accounts for described mix
Close the 8-12% of powder A gross masses.
4. the composite porous preparation method of ceramet according to claim 1, which is characterized in that described in the first step
Sintering aid be MoO3、MnO2Or one kind in CuO, and the granularity of the sintering aid is 5-10 μm, the addition of the sintering aid
Account for the 6-10% of the mixed powder A gross masses.
5. the composite porous preparation method of ceramet according to claim 1, which is characterized in that described in second step
Solvent be deionized water, the tert-butyl alcohol or down alkene in one kind.
6. the composite porous preparation method of ceramet according to claim 1, which is characterized in that described in second step
Binder be one kind in polyvinyl alcohol, polyvinyl butyral or gelatin, and the binder is accounted for and is mixed described in the first step
The 0.5%-1.6% of powder A mass.
7. the composite porous preparation method of ceramet according to claim 1, which is characterized in that described in second step
Antifoaming agent be n-butanol, and the antifoaming agent accounts for the 0.3%-0.5% of mixed powder A mass described in the first step.
8. the composite porous preparation method of ceramet according to claim 1, which is characterized in that described in third step
Porous foam metal is one in the alloy of iron, copper, nickel, titanium, gold, zirconium, one kind in molybdenum or porous foam metal described above
Kind, and the aperture of the porous foam metal is 0.1-5mm.
9. the composite porous preparation method of ceramet according to claim 1, which is characterized in that described in the 6th step
Inert gas be high pure nitrogen or argon gas.
10. composite porous according to a kind of ceramet prepared using claim 1-9 any one of them methods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810611574.0A CN108484213B (en) | 2018-06-14 | 2018-06-14 | Ceramic metal porous composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810611574.0A CN108484213B (en) | 2018-06-14 | 2018-06-14 | Ceramic metal porous composite material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108484213A true CN108484213A (en) | 2018-09-04 |
| CN108484213B CN108484213B (en) | 2020-06-30 |
Family
ID=63342483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810611574.0A Active CN108484213B (en) | 2018-06-14 | 2018-06-14 | Ceramic metal porous composite material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108484213B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482882A (en) * | 2018-10-22 | 2019-03-19 | 中国科学院金属研究所 | Foam metal and preparation method thereof with microcosmic orientation pore structure |
| CN111847888A (en) * | 2020-07-30 | 2020-10-30 | 深圳绿蓝技术有限公司 | Multifunctional ceramic and its production method and application |
| CN112390653A (en) * | 2020-11-16 | 2021-02-23 | 中国工程物理研究院材料研究所 | Method for preparing ceramic powder based on freezing casting molding |
| CN113308713A (en) * | 2021-05-25 | 2021-08-27 | 西部金属材料股份有限公司 | Metal ceramic anode and preparation method and application thereof |
| CN114368194A (en) * | 2021-12-31 | 2022-04-19 | 八龙应用材料科技(海南)有限公司 | High-temperature-resistant heat-insulating ceramic composite material and preparation method thereof |
| CN116536538A (en) * | 2023-07-05 | 2023-08-04 | 太原理工大学 | Preparation method of ultrasonic-assisted self-infiltration aluminum oxide reinforced magnesium-based composite material |
| CN116573947A (en) * | 2023-04-27 | 2023-08-11 | 郑州航空工业管理学院 | Three-dimensional toughened ceramic cutter material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010066648A1 (en) * | 2008-12-12 | 2010-06-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Open-cell ceramic and/or metal foams having a rough enveloping surface and a method for the production thereof |
| CN104073673A (en) * | 2014-06-20 | 2014-10-01 | 西安工程大学 | Preparation method of ceramic reinforced metal-based composite material |
| CN105750547A (en) * | 2016-03-07 | 2016-07-13 | 中国科学院上海硅酸盐研究所 | Preparation method of porous metal/ceramic composite material with controllable shape and performance |
-
2018
- 2018-06-14 CN CN201810611574.0A patent/CN108484213B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010066648A1 (en) * | 2008-12-12 | 2010-06-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Open-cell ceramic and/or metal foams having a rough enveloping surface and a method for the production thereof |
| CN104073673A (en) * | 2014-06-20 | 2014-10-01 | 西安工程大学 | Preparation method of ceramic reinforced metal-based composite material |
| CN105750547A (en) * | 2016-03-07 | 2016-07-13 | 中国科学院上海硅酸盐研究所 | Preparation method of porous metal/ceramic composite material with controllable shape and performance |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482882A (en) * | 2018-10-22 | 2019-03-19 | 中国科学院金属研究所 | Foam metal and preparation method thereof with microcosmic orientation pore structure |
| CN111847888A (en) * | 2020-07-30 | 2020-10-30 | 深圳绿蓝技术有限公司 | Multifunctional ceramic and its production method and application |
| CN112390653A (en) * | 2020-11-16 | 2021-02-23 | 中国工程物理研究院材料研究所 | Method for preparing ceramic powder based on freezing casting molding |
| CN113308713A (en) * | 2021-05-25 | 2021-08-27 | 西部金属材料股份有限公司 | Metal ceramic anode and preparation method and application thereof |
| CN114368194A (en) * | 2021-12-31 | 2022-04-19 | 八龙应用材料科技(海南)有限公司 | High-temperature-resistant heat-insulating ceramic composite material and preparation method thereof |
| CN114368194B (en) * | 2021-12-31 | 2024-03-26 | 八龙应用材料科技(海南)有限公司 | High-temperature-resistant heat-insulating ceramic composite material and preparation method thereof |
| CN116573947A (en) * | 2023-04-27 | 2023-08-11 | 郑州航空工业管理学院 | Three-dimensional toughened ceramic cutter material and preparation method thereof |
| CN116536538A (en) * | 2023-07-05 | 2023-08-04 | 太原理工大学 | Preparation method of ultrasonic-assisted self-infiltration aluminum oxide reinforced magnesium-based composite material |
| CN116536538B (en) * | 2023-07-05 | 2023-09-08 | 太原理工大学 | Preparation method of ultrasonic-assisted self-infiltration aluminum oxide reinforced magnesium-based composite material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108484213B (en) | 2020-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108484213A (en) | A kind of ceramet is composite porous and preparation method thereof | |
| CN102807391B (en) | Method for preparing porous silicon carbide ceramic | |
| CN102417366B (en) | Pore gradient silicon carbide porous ceramic and preparation method thereof | |
| CN106238725B (en) | A kind of thermal conductivity copper powder and preparation method thereof of high wicking rate low-apparent-density | |
| CN104945005B (en) | A kind of porous material with centrosymmetric structure and preparation method thereof | |
| CN103588482B (en) | Manufacture method of high porosity and high strength yttrium-silicon-oxygen porous ceramics | |
| CN109279909B (en) | Preparation method of high-strength boron carbide porous ceramic | |
| CN105903969B (en) | A kind of porous copper material and preparation method thereof with oriented laminated hole | |
| CN103145438A (en) | Preparation method of biomimetic gradient porous ceramic material | |
| CN108188400A (en) | A kind of micro-nano twin-stage Porous Cu and preparation method thereof | |
| CN104046877B (en) | Orienting stephanoporate SiC-Cu matrix material used for electronic packaging and preparation method | |
| CN106222467A (en) | A kind of titanium material with high-orientation stratiform orientation interconnected pore and preparation method thereof | |
| CN103274693A (en) | Porous silicon carbide ceramic provided with novel pore wall structure and preparation method thereof | |
| CN109928756A (en) | A kind of SiC reinforcement C-base composte material and preparation method | |
| CN105036798A (en) | Method for preparing porous ceramic by impregnation combining freeze-drying technology | |
| CN112553494B (en) | Refrigeration device and method for preparing high-strength and high-toughness layered porous titanium alloy material by using same | |
| CN110092650B (en) | Light high-strength acicular mullite porous ceramic, preparation method thereof and filter | |
| CN107721448A (en) | A kind of preparation method of the mullite porous ceramic rich in whisker structure | |
| CN105084364B (en) | A kind of preparation technology of porous silicon carbide spherical powder | |
| CN108611511B (en) | A kind of three-dimensional intercommunication CNTs/Cu composite material and preparation method | |
| CN107221688B (en) | A kind of frost curtain coating preparation solid oxide fuel cell metal support technique | |
| CN104726775A (en) | Iron-chromium-aluminum-based porous alloy material and preparation method thereof | |
| CN104418608B (en) | The easy fired method of carborundum porous ceramics | |
| CN109748595A (en) | A kind of mixing penetration enhancer, purposes and reaction infiltration preparation method | |
| CN110002863A (en) | A kind of preparation method of Yttrium aluminum garnet porous ceramics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |