CN110746179A - Alumina ceramic impregnated sucrose material with adjustable negative dielectric constant and preparation method thereof - Google Patents
Alumina ceramic impregnated sucrose material with adjustable negative dielectric constant and preparation method thereof Download PDFInfo
- Publication number
- CN110746179A CN110746179A CN201911128118.1A CN201911128118A CN110746179A CN 110746179 A CN110746179 A CN 110746179A CN 201911128118 A CN201911128118 A CN 201911128118A CN 110746179 A CN110746179 A CN 110746179A
- Authority
- CN
- China
- Prior art keywords
- ceramic
- preparation
- sucrose
- sintering
- 120min
- 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.)
- Pending
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229930006000 Sucrose Natural products 0.000 title claims abstract description 17
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 title claims abstract description 17
- 239000005720 sucrose Substances 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 title abstract description 16
- 239000000919 ceramic Substances 0.000 claims abstract description 26
- 238000005245 sintering Methods 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 16
- 238000000498 ball milling Methods 0.000 claims abstract description 15
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 12
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 12
- 238000005336 cracking Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract 2
- 238000001035 drying Methods 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000002612 dispersion medium Substances 0.000 claims description 6
- 239000011812 mixed powder Substances 0.000 claims description 6
- 238000007873 sieving Methods 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 229960004793 sucrose Drugs 0.000 claims 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000011159 matrix material Substances 0.000 abstract 2
- 238000007598 dipping method Methods 0.000 abstract 1
- 238000005470 impregnation Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 229910003481 amorphous carbon Inorganic materials 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000001237 Raman spectrum Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Images
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
- 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
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/6261—Milling
- C04B35/62615—High energy or reactive ball milling
-
- 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
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62695—Granulation or pelletising
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5001—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with carbon or carbonisable materials
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
-
- 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
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
-
- 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
-
- 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)
- Inorganic Insulating Materials (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to a preparation method of alumina ceramic impregnated sucrose with adjustable dielectric constant, which mainly comprises alumina ceramic of a matrix phase and sucrose cracking carbon of a conductive phase, and the content of the conductive phase in a system is adjusted by adjusting different impregnation times. The composition of the material can be represented by the chemical formula xC/(1-x) Al2O3The preparation method comprises the following steps: (1) preparing porous alumina ceramics (burdening, ball-milling, molding and sintering); (2) dipping sucrose; (3) reducing to obtain the corresponding carbon content. The invention relates to aThe alumina ceramic matrix is impregnated with sucrose reduction cracking carbon as a conductive phase, so that the ceramic material has the excellent performance of high strength and hardness and conductivity, and the negative dielectric constant is realized in a certain range of an external magnetic field.
Description
Technical Field
The invention relates to the technical field of negative parameters, in particular to sucrose serving as a cracking carbon material source.
Background
Most of electromagnetic parameters of traditional materials are positive values, and only a few materials in nature have negative parameters, but with the continuous exploration and research of people on the material category, the fact that a material with a controllable negative dielectric constant can be obtained by regulating and controlling the microstructure and the proportion of the material is found, and the material with the negative parameters is called as a metamaterial.
Most of electromagnetic parameters of traditional materials are positive values, and only a few materials in nature have negative parameters, but with the continuous exploration and research of people on the material category, the fact that a material with a controllable negative dielectric constant can be obtained by regulating and controlling the microstructure and the proportion of the material is found, and the material with the negative parameters is called as a metamaterial.
Disclosure of Invention
In order to solve the problem that the negative dielectric constant of the existing metal metamaterial is not easy to adjust, sucrose is selected as a functional material, when a carbon material cracks an amorphous carbon film at a certain temperature, the amorphous carbon film can be uniformly attached to the surface of ceramic particles, and the metamaterial with the negative dielectric constant easy to adjust is prepared.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
the invention designs a C/Al2O3The preparation method of the metamaterial comprises the following steps of: xC/Al2O3The main preparation raw materials comprise activated carbon, alumina powder, titanium dioxide and sucrose. The preparation method is characterized by comprising the following steps:
(1) 18 weight percent of active carbon and 3 weight percent of TiO according to the mass ratio2(sintering aid) and corresponding amount of Al2O3Weighing, and placing the mixture in a ball milling tank for ball milling for 6 hours at 200r/min by taking absolute ethyl alcohol as a dispersion medium. Drying to obtain uniformly mixed powder, adding a proper amount of PVA as a binder to grind the prepared powder, granulating, drying, sieving and molding into ceramic plates with phi =19mm and t =2mm, and placing the obtained green bodies in a muffle furnace for sintering.
(2) Preparing sucrose growth solution with a certain concentration, and dividing the ceramic wafer in the step (1) into four components to obtain C/Al with the same components2O3Cracking the carbon ceramic sample.
(3) Reduction treatment, namely placing samples with different components in a vacuum tube furnace at 600 ℃ respectivelyoC、750oC、900oC、1050oAnd C, reducing for 2 h.
2. The C/Al of claim 12O3The preparation method of the ceramic is characterized by comprising the following steps: the preparation method comprises ball milling and drying; in the step (1), the ceramic wafer is sintered for 6 hours in a muffle furnace at 600 ℃, and the sintering temperature curve is as follows:
room temperature120min—600oC—360min—600oC—120min-room temperature
The ceramic sheet is processed at 600 in the step (3)oC、750oC、900oC、1050oAnd C, sintering for 2 hours in a vacuum tube furnace under the protective atmosphere of nitrogen, wherein the sintering temperature curve is as follows:
room temperature120min—600oC—120min—600oC—120min-room temperature
Room temperature150min—750oC—120min—750oC—150min-room temperature
Room temperature180min—900oC—120min—900oC—180min-room temperature
Room temperature210min—1050oC—120min—1050oC—210min-room temperature
Researches show that the sintering temperature of the composite material has great influence on the dielectric property of the composite material.
The invention has the beneficial effects that:
(1) the adjustable negative parameters can be realized by changing the sintering temperature through the metamaterial provided by the invention.
(2) The metamaterial prepared by the method is expected to be used in the fields of stealth, radar and the like.
Drawings
The invention will be further elucidated with reference to the drawings and the detailed description:
FIG. 1 different temperatures C/Al2O3XRD schematic of composite materials
FIG. 2750oC/Al under C2O3Raman spectrum of composite material
FIG. 3 Mo/Al at different temperatures2O3Schematic diagram of dielectric constant of the composite material.
Detailed Description
A preparation method of a metamaterial comprises the following steps:
example 1
(1) 18 weight percent of active carbon and 3 weight percent of TiO according to the mass ratio2(sintering aid) and corresponding amount of Al2O3Weighing, and placing the mixture in a ball milling tank for ball milling for 6 hours at 200r/min by taking absolute ethyl alcohol as a dispersion medium. Drying to obtain uniformly mixed powder, adding a proper amount of PVA as a binder to grind the prepared powder, granulating, drying, sieving and molding into ceramic plates with phi =19mm and t =2mm, and placing the obtained green bodies in a muffle furnace for sintering.
(2) Preparing sucrose growth solution with a certain concentration, and dividing the ceramic wafer in the step (1) into four components to obtain C/Al with the same components2O3Cracking the carbon ceramic sample.
(3) Reduction treatment, namely placing samples with different components in a vacuum tube furnace at 600 ℃ respectivelyoC is reduced for 2 h.
(4) And (4) polishing the sample wafer taken out in the step (4). And ultrasonically treating by using alcohol, drying in a drying oven, and then coating silver to measure the dielectric property of the sample wafer.
Example 2
(1) 18 weight percent of active carbon and 3 weight percent of TiO according to the mass ratio2(sintering aid) and corresponding amount of Al2O3Weighing, and placing the mixture in a ball milling tank for ball milling for 6 hours at 200r/min by taking absolute ethyl alcohol as a dispersion medium. Drying to obtain uniformly mixed powder, adding a proper amount of PVA as a binder to grind the prepared powder, granulating, drying, sieving and molding into ceramic plates with phi =19mm and t =2mm, and placing the obtained green bodies in a muffle furnace for sintering.
(2) Preparing sucrose growth solution with a certain concentration, and dividing the ceramic wafer in the step (1) into four components to obtain C/Al with the same components2O3Cracking the carbon ceramic sample.
(3) Reduction treatment, namely placing samples with different components in a vacuum tube furnace at 750 ℃ respectivelyoC is reduced for 2 h.
(4) And (4) polishing the sample wafer taken out in the step (4). And ultrasonically treating by using alcohol, drying in a drying oven, and then coating silver to measure the dielectric property of the sample wafer.
Example 3
(1) 18 weight percent of active carbon and 3 weight percent of TiO according to the mass ratio2(sintering aid) and corresponding amount of Al2O3Weighing, and placing the mixture in a ball milling tank for ball milling for 6 hours at 200r/min by taking absolute ethyl alcohol as a dispersion medium. Drying to obtain uniformly mixed powder, adding a proper amount of PVA as a binder to grind the prepared powder, granulating, drying, sieving and molding into ceramic plates with phi =19mm and t =2mm, and placing the obtained green bodies in a muffle furnace for sintering.
(2) Preparing sucrose growth solution with a certain concentration, and dividing the ceramic wafer in the step (1) into four components to obtain C/Al with the same components2O3Cracking the carbon ceramic sample.
(3) Reduction treatment, namely placing samples with different components in a vacuum tube furnace at 900 degrees respectivelyoC is reduced for 2 h.
(4) And (4) polishing the sample wafer taken out in the step (4). And ultrasonically treating by using alcohol, drying in a drying oven, and then coating silver to measure the dielectric property of the sample wafer.
Example 4
(1) 18 weight percent of active carbon and 3 weight percent of TiO according to the mass ratio2(sintering aid) and corresponding amount of Al2O3Weighing, and placing the mixture in a ball milling tank for ball milling for 6 hours at 200r/min by taking absolute ethyl alcohol as a dispersion medium. Drying to obtain uniformly mixed powder, adding a proper amount of PVA as a binder to grind the prepared powder, granulating, drying, sieving and molding into ceramic plates with phi =19mm and t =2mm, and placing the obtained green bodies in a muffle furnace for sintering.
(2) Preparing sucrose growth solution with a certain concentration, and dividing the ceramic wafer in the step (1) into four components to obtain C/Al with the same components2O3Cracking the carbon ceramic sample.
(3) Reduction treatment, placing the obtained samples with different components in a vacuum tube furnace at 1050oC is reduced for 2 h.
(4) And (4) polishing the sample wafer taken out in the step (4). And ultrasonically treating by using alcohol, drying in a drying oven, and then coating silver to measure the dielectric property of the sample wafer.
Claims (2)
1. Al (aluminum)2O3A process for preparing cane sugar impregnated ceramic material with xC/(1-x) Al2O3It is shown that the main raw material for preparation comprises Al2O3Carbon powder, TiO2And sucrose. The preparation method is characterized by comprising the following steps:
(1) 18 weight percent of active carbon and 3 weight percent of TiO according to the mass ratio2(sintering aid) and corresponding amount of Al2O3Weighing, and placing the mixture in a ball milling tank for ball milling for 6 hours at 200r/min by taking absolute ethyl alcohol as a dispersion medium. Drying to obtain uniformly mixed powder, adding a proper amount of PVA as a binder to grind the prepared powder, granulating, drying, sieving and molding into ceramic plates with phi =19mm and t =2mm, and placing the obtained green bodies in a muffle furnace for sintering.
(2) Preparing sucrose growth solution with a certain concentration, and dividing the ceramic wafer in the step (1) into four components to obtain C/Al with the same components2O3Cracking the carbon ceramic sample. (3) Reduction treatment, namely placing samples with different components in a vacuum tube furnace at 600 ℃ respectivelyoC、750oC、900oC、1050oAnd C, reducing for 2 h.
2. The C/Al of claim 12O3The preparation method of the ceramic is characterized by comprising the following steps: the preparation method comprises ball milling and drying; in the step (1), the ceramic wafer is sintered for 6 hours in a muffle furnace at 600 ℃, and the sintering temperature curve is as follows:
room temperature120min—600oC—360min—600oC—120min-room temperature
And (3) sintering the ceramic wafer in a vacuum tube furnace at 600 ℃ for 2 hours, wherein the sintering temperature curve under the protective atmosphere of nitrogen is as follows:
room temperature120min—600oC—120min—600oC—120min-room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911128118.1A CN110746179A (en) | 2019-11-18 | 2019-11-18 | Alumina ceramic impregnated sucrose material with adjustable negative dielectric constant and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911128118.1A CN110746179A (en) | 2019-11-18 | 2019-11-18 | Alumina ceramic impregnated sucrose material with adjustable negative dielectric constant and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110746179A true CN110746179A (en) | 2020-02-04 |
Family
ID=69283596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911128118.1A Pending CN110746179A (en) | 2019-11-18 | 2019-11-18 | Alumina ceramic impregnated sucrose material with adjustable negative dielectric constant and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110746179A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065260A (en) * | 1992-04-18 | 1992-10-14 | 湖北省机电研究所 | Foamed ceramic filter and manufacture method thereof |
| DE69213956D1 (en) * | 1991-11-22 | 1996-10-24 | Rolls Royce Plc | METHOD FOR PRODUCING A COMPOSITE |
| JP2010254523A (en) * | 2009-04-24 | 2010-11-11 | Sumitomo Electric Ind Ltd | Method for producing spinel-based ceramic |
| CN103787653A (en) * | 2014-02-14 | 2014-05-14 | 常州大学 | Preparation method of carbon-modified CaCu3Ti4O12 high dielectric material |
| CN109721341A (en) * | 2019-03-18 | 2019-05-07 | 齐鲁工业大学 | A kind of regulatable negative permittivity Meta Materials and preparation method thereof |
-
2019
- 2019-11-18 CN CN201911128118.1A patent/CN110746179A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69213956D1 (en) * | 1991-11-22 | 1996-10-24 | Rolls Royce Plc | METHOD FOR PRODUCING A COMPOSITE |
| CN1065260A (en) * | 1992-04-18 | 1992-10-14 | 湖北省机电研究所 | Foamed ceramic filter and manufacture method thereof |
| JP2010254523A (en) * | 2009-04-24 | 2010-11-11 | Sumitomo Electric Ind Ltd | Method for producing spinel-based ceramic |
| CN103787653A (en) * | 2014-02-14 | 2014-05-14 | 常州大学 | Preparation method of carbon-modified CaCu3Ti4O12 high dielectric material |
| CN109721341A (en) * | 2019-03-18 | 2019-05-07 | 齐鲁工业大学 | A kind of regulatable negative permittivity Meta Materials and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张茜等: "溶胶-凝胶法制备Al_2O_3粉体及其陶瓷的性能研究", 《人工晶体学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20110039685A1 (en) | Transparent alumina ceramics with oriented grains and preparation method thereof | |
| CN111394706B (en) | Preparation method of ITO ceramic target material with controllable grain size | |
| CN104402441B (en) | A kind of low temperature Fast Sintering is prepared the method for boron carbide ceramics material | |
| CN111320478B (en) | Preparation method of carbon-silicon ceramic target material | |
| CN104446468B (en) | A kind of X9R type ceramic capacitor dielectric material and preparation method thereof | |
| CN108218419B (en) | Preparation method of indium tin oxide ceramic target material | |
| CN114933468B (en) | Cold sintering assisted low temperature densification of Zn 3 B 2 O 6 Preparation method of microwave ceramic material | |
| CN108546125B (en) | Piezoceramic material applied to high-temperature environment and preparation method thereof | |
| CN108439969B (en) | Low-dielectric-constant temperature-stable microwave medium and preparation method thereof | |
| CN112851346A (en) | Ultra-low-loss zirconium magnesium niobate system microwave dielectric ceramic material and preparation method thereof | |
| CN108546109A (en) | The controllable large scale AZO magnetic control spattering target preparation methods of Lacking oxygen | |
| CN109207947A (en) | A kind of preparation method of target | |
| CN110128128B (en) | Bismuth ferrite-bismuth aluminate-bismuth zinc titanate high-temperature piezoelectric ceramic with zero temperature coefficient and high-temperature stability and preparation method thereof | |
| CN108863348A (en) | A kind of dielectric ceramic material and preparation method thereof of ultra-wide temperature stability | |
| CN110746179A (en) | Alumina ceramic impregnated sucrose material with adjustable negative dielectric constant and preparation method thereof | |
| CN112552048B (en) | Preparation method of potassium-sodium niobate ceramic with high piezoelectric property and high remanent polarization | |
| CN116063067A (en) | Multi-main-element giant dielectric ceramic material and preparation method and application thereof | |
| CN107056290A (en) | A kind of method of regulation and control ferroelectric ceramics Curie temperature | |
| JPS6067601A (en) | Preparation of sintered body | |
| CN112441830B (en) | High-quality-factor yttrium-doped zirconia microwave dielectric ceramic material and preparation method thereof | |
| CN111848154B (en) | Ceramic capacitor medium and preparation method thereof | |
| CN115376825A (en) | NN-based energy storage ceramic block material with high energy storage density and energy storage efficiency and preparation method thereof | |
| CN111217602A (en) | Dielectric ceramic material with adjustable dielectric constant and dielectric loss and preparation method thereof | |
| CA3030635A1 (en) | Low-cost process of manufacturing transparent spinel | |
| CN103387390A (en) | Method for improving adjustability of DC bias field of barium zirconate titanate ceramic dielectric materials |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200204 |
|
| WD01 | Invention patent application deemed withdrawn after publication |