CN106830961A - A kind of zirconium oxide for having hole-closing structure strengthens the preparation method of alumina porous ceramic - Google Patents
A kind of zirconium oxide for having hole-closing structure strengthens the preparation method of alumina porous ceramic Download PDFInfo
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Abstract
The present invention provides a kind of zirconium oxide with hole-closing structure strengthens the preparation method of alumina porous ceramic, comprises the following steps：The nanometer wire tetragonal zircite powder of yttria stabilised, the alumina powder of ball containing hollow alumina and alumina fibre and silicon dioxide gel are mixed, the ball milling in spin ball mill obtains the mixed slurry that total solid content is 7 45%；Mixed slurry is added into capric acid, sodium hexadecyl sulfate, sodium stearyl sulfate or lauryl sodium sulfate powder hydrophobization dressing agent, pH value to 3 9.5 is adjusted with watery hydrochloric acid, mechanical agitation is foamed, then injection molding on gypsum, is dried to obtain dry blank；Blank is sintered at 1,300 1650 DEG C, the zirconium oxide enhancing alumina porous ceramic with hole-closing structure is obtained.
Description
Technical field
The invention belongs to technical field of ceramic material, and in particular to a kind of zirconium oxide enhancing aluminum oxide for having hole-closing structure is more
The preparation method of hole ceramics.
Background technology
With pressing for science and technology, the demand of high performance material also more and more higher, porous ceramic film material has ceramic of compact
The features such as physics that material has in itself and chemical stability, high temperature resistant, the ratio high also having in itself with loose structure
Surface area, high permeability and low-density and low heat conductivity, therefore have application well in fields such as insulation, fire-retardant, antidetonations
Prospect.
The zirconium oxide of stabilized with yttrium oxide has excellent mechanical strength, corrosion-resistant and resistance to elevated temperatures, in stabilized with yttrium oxide
Zirconia ceramics material in when introducing stomata because the thermal conductivity of air is extremely low, substantially reduce the thermal conductivity of material, but gas
Hole can damage the mechanical structure of material as defect, and the intensity of material can the index reduction with the increase of the porosity.Therefore, such as
The mechanical strength that material is improved on the premise of where ensureing high porosity is the problem that must be solved.
The preparation side of high tenacity stable zirconia ceramics with partial porous network structure disclosed in Chinese patent CN1246256C
Method, with zirconium oxide as base material, adds light magnesium oxide, cerium oxide and micro Ultrafine Aluminium Oxide Particle, is mixed with mechanical attrition method,
Dry-pressing formed base substrate obtains the porous partial stabilization zirconium oxide ceramic of high tenacity, zirconium oxide pottery through the double sintering of different stabilizations
Porcelain it is microcosmic in porous network shape, network aperture is 100-200nm, and material fracture toughness is 12-21MPa/m, and the zirconium oxide is more
The loose structure of hole ceramics is opening shape, and the compressive property to ceramics is not studied.(" fiber reinforcement is more for Chinese document
The preparation of hole YSZ ceramic materials and performance study ", Lang Ying, blowing university Doctor of engineering academic dissertation, in April, 2014) it is disclosed
The porous YSZ ceramic materials of fiber reinforcement, using YSZ fibers, alumina fibre, mullite fiber and alumina silicate fibre to YSZ
Ceramic material carries out strength modified, it is found that alumina fibre can be effectively increased the toughness of porous YSZ ceramic materials, but hole
Rate can also be influenceed by certain, then have impact on density and thermal conductivity.From above-mentioned prior art, by adding aluminum oxide
Powder or alumina fibre can be different degrees of raising zirconia ceramics mechanical strength, but ensure high porosity before
The mechanical strength for putting raising material not can solve still.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of zirconium oxide with hole-closing structure strengthens aluminum oxide porous pottery
The preparation method of porcelain, by the nanometer wire tetragonal zircite powder of yttria stabilised, ball containing hollow alumina and alumina fibre
Alumina powder and silicon dioxide gel as raw material, adjust pH value simultaneously using powder hydrophobization dressing agent to alumina powder
Body surface face carries out hydrophobic modification, prepares that porosity is high, the high mechanical strength overstable porous bubble containing hole-closing structure
Foam ceramics, preparation method is simple, with low cost, nontoxic.
In order to solve the above technical problems, the technical scheme is that：
A kind of zirconium oxide with hole-closing structure strengthens the preparation method of alumina porous ceramic, comprises the following steps：
(1) be the nanometer wire tetragonal zircite powder of 50nm-5 μm of yttria stabilised by particle diameter, particle diameter be 50nm-5 μ
The ball containing hollow alumina of m and the alumina powder of alumina fibre and particle diameter are the silicon dioxide gel mixing of 15-30nm,
Ball milling 1-6h in spin ball mill, obtains the mixed slurry that total solid content is 7-45%；
(2) it is the powder hydrophobization of slurry total amount 0.006-0.8wt% that the mixed slurry for preparing step (1) adds consumption
Dressing agent, pH value is adjusted to 3-9.5 with watery hydrochloric acid, and mechanical agitation carries out foaming 10min under 1600-1900rpm, then in stone
Injection molding on cream plate, is dried to obtain dry blank；
(3) blank for preparing step (2) is warming up to 1300-1650 DEG C with the speed of 5 DEG C/min, sinters 2h, is had
There is the zirconium oxide enhancing alumina porous ceramic of hole-closing structure.
As the preferred of above-mentioned technical proposal, the nanometer wire tetragonal zircite powder of yttria stabilised in the step (1)
A diameter of 50-300nm of body, length is more than 10 μm.
As the preferred of above-mentioned technical proposal, the nanometer wire tetragonal zircite powder of yttria stabilised in the step (1)
The preparation method of body is：Oxalic acid aqueous solution will be slowly added dropwise in chromium oxychloride solution, be uniformly mixing to obtain zirconium colloidal sol, be by aperture
The Electrochemical anodization of 20nm is submerged initially in zirconium colloidal sol, then is immersed in yttrium oxide precursor solution, is taken out, under infrared lamp
Drying, then under argon atmosphere, the nanometer wire tetragonal zircite powder that 5h obtains yttria stabilised is sintered at 500 DEG C.
As the preferred of above-mentioned technical proposal, the oxidation of ball containing hollow alumina and alumina fibre in the step (1)
The weight ratio of hollow alumina balls and alumina fibre is 1-3 in aluminium powder body:1, the consumption of wherein alumina fibre accounts for total mixing
The 3-10% of stock quality, a diameter of 5 μm of the alumina fibre, length is 1-2mm.
As the preferred of above-mentioned technical proposal, the component in the step (1) in mixed slurry, by weight percentage,
Including Zirconium powder 1-10%, alumina powder 5-35%, silicon dioxide gel 0.2-0.5%.
Used as the preferred of above-mentioned technical proposal, powder hydrophobization dressing agent is capric acid, cetyl sulphur in the step (2)
One kind in sour sodium, sodium stearyl sulfate, lauryl sodium sulfate.
Used as the preferred of above-mentioned technical proposal, when powder hydrophobization dressing agent is capric acid in the step (2), pH value is
4.5-5.5。
As the preferred of above-mentioned technical proposal, in the step (2) drying means dry for normal temperature and pressure on gypsum,
Dried in 40-70 DEG C of baking oven or intermittent type microwave is dried, preferably normal temperature and pressure is dried on gypsum.
Used as the preferred of above-mentioned technical proposal, the zirconium oxide enhancing aluminum oxide with hole-closing structure is more in the step (3)
The porosity of hole ceramics is not less than 88%, and compression strength is 1.5 of the alumina porous ceramic compression strength under same porosity
More than times, thermal conductivity factor is not higher than 0.28W/Km.
Compared with prior art, the invention has the advantages that：
(1) the enhancing alumina porous ceramic of the zirconium oxide with hole-closing structure that prepared by the present invention uses capric acid, hexadecane
, used as powder hydrophobization dressing agent, by adjusting, pH value is same for base sodium sulphate, sodium stearyl sulfate or lauryl sodium sulfate
When surface-hydrophobicized modifying and decorating is carried out to zirconium oxide and alumina powder, overstable ceramic particle is obtained after ball-milling treatment
Foamed slurry, preparation method is simple, eliminates the operation of gel, dumping, and the usage amount of powder hydrophobization dressing agent is few, drop
Low cost.
(2) primary raw material of the enhancing alumina porous ceramic of the zirconium oxide with hole-closing structure that prepared by the present invention is oxidation
Zirconium, aluminum oxide and silica, the zirconium oxide of stabilized with yttrium oxide is a kind of very outstanding ceramic material, with high mechanics
Intensity, corrosion-resistant, high temperature resistant, thermal conductivity are also very low, contain in the zirconium oxide of the stabilized with yttrium oxide of nanometer wire and alumina powder
Some alumina fibres are nanoscale and grade threadiness, can keep fibrous in sintering, are made existing microcosmic in ceramics
Loose structure has the microcosmic and macroscopic fibres structure of densification again, on the basis of porosity is not influenceed, further improves porous pottery
The compression strength of porcelain, slurry is prepared by silicon dioxide gel together with zirconium oxide, aluminum oxide, and silica is uniformly distributed in porous
The opening of ceramics, makes the structure of porous ceramics forming part closed pore, further improves the compression strength of porous ceramics.
(3) the enhancing alumina porous ceramic of the zirconium oxide with hole-closing structure that prepared by the present invention density is small, heat conduction system
Number is low, and the porosity is high, excellent thermal insulation performance, similar with inorganic aerogels, size good moldability, size and porosity it is controllable
Property it is strong, mechanical strength is good, and with very excellent thermal insulation fire-resistant performance, and preparation process is simple, production link has not been produced
Malicious harmful substance, environmental protection efficiently, is suitable for industry and produces on a large scale, good in economic efficiency.
Specific embodiment
Describe the present invention in detail below in conjunction with specific embodiment, herein illustrative examples of the invention and explanation
It is for explaining the present invention but not as a limitation of the invention.
Embodiment 1：
(1) it is 2 according to volume ratio:3, the oxalic acid aqueous solution of 0.05M will be slowly added dropwise in the chromium oxychloride solution of 0.2M, stir
Mix and uniformly obtain zirconium colloidal sol, by aperture for the Electrochemical anodization of 20nm is submerged initially in 10min in zirconium colloidal sol, then immerse oxidation
10min in iridium precursor solution, takes out, and is dried under infrared lamp, then under argon atmosphere, 5h is sintered at 500 DEG C, obtains straight
Footpath is 50-300nm, the nanometer wire tetragonal zircite powder of yttria stabilised of the length more than 10 μm.
(2) by weight percentage, the nanometer wire tetragonal zircite powder of 4% yttria stabilised, 16% are contained
Weight ratio is 1:1 particle diameter is 0.5 μm of hollow alumina ball and a diameter of 5 μm, and length is mixed for the alumina fibre of 1-2mm
Compound and 0.3% particle diameter are the silicon dioxide gel mixing of 20nm, and ball milling 4h, obtains mixed slurry in spin ball mill,
Wherein, the consumption of alumina fibre accounts for the 3% of total mixed slurry quality.
(3) it is the capric acid powder hydrophobization dressing agent of slurry total amount 0.05wt% mixed slurry to be added into consumption, uses dilute salt
To 5.1, mechanical agitation carries out foaming 10min to acid for adjusting pH value under 1800rpm, then injection molding on gypsum, in plasterboard
Upper normal temperature and pressure dries 24h and obtains dry blank.
(4) blank is warming up to 1400 DEG C with the speed of 5 DEG C/min, sinters 2h, obtain the zirconium oxide with hole-closing structure
Enhancing alumina porous ceramic.
Embodiment 2：
(1) it is 2 according to volume ratio:3, the oxalic acid aqueous solution of 0.05M will be slowly added dropwise in the chromium oxychloride solution of 0.2M, stir
Mix and uniformly obtain zirconium colloidal sol, by aperture for the Electrochemical anodization of 20nm is submerged initially in 10min in zirconium colloidal sol, then immerse oxidation
10min in iridium precursor solution, takes out, and is dried under infrared lamp, then under argon atmosphere, 5h is sintered at 500 DEG C, obtains straight
Footpath is 50-300nm, the nanometer wire tetragonal zircite powder of yttria stabilised of the length more than 10 μm.
(2) by weight percentage, by the nanometer wire tetragonal zircite powder of 9.5% yttria stabilised, 35%
Ratio containing weight is 3:1 particle diameter is 0.5 μm of hollow alumina ball and a diameter of 5 μm, and length is the alumina fibre of 1-2mm
Mixture and 0.5% particle diameter are the silicon dioxide gel mixing of 20nm, and ball milling 6h, obtains mixing slurry in spin ball mill
Material, wherein, the consumption of alumina fibre accounts for the 10% of total mixed slurry quality.
(3) consumption is added to be modified for the sodium hexadecyl sulfate powder hydrophobization of slurry total amount 0.8wt% mixed slurry
Agent, pH value is adjusted to 4.0 with watery hydrochloric acid, and mechanical agitation carries out foaming 10min at 1600 rpm, then injection molding on gypsum,
4h is dried in 50 DEG C of baking ovens and obtains dry blank.
(4) blank is warming up to 1450 DEG C with the speed of 5 DEG C/min, sinters 2h, obtain the zirconium oxide with hole-closing structure
Enhancing alumina porous ceramic.
Embodiment 3：
(1) it is 2 according to volume ratio:3, the oxalic acid aqueous solution of 0.05M will be slowly added dropwise in the chromium oxychloride solution of 0.2M, stir
Mix and uniformly obtain zirconium colloidal sol, by aperture for the Electrochemical anodization of 20nm is submerged initially in 10min in zirconium colloidal sol, then immerse oxidation
10min in iridium precursor solution, takes out, and is dried under infrared lamp, then under argon atmosphere, 5h is sintered at 500 DEG C, obtains straight
Footpath is 50-300nm, the nanometer wire tetragonal zircite powder of yttria stabilised of the length more than 10 μm.
(2) by weight percentage, the nanometer wire tetragonal zircite powder of 1.8% yttria stabilised, 5% are contained
Weight ratio is 2:1 particle diameter is 0.2 μm of hollow alumina ball and a diameter of 5 μm, and length is mixed for the alumina fibre of 1-2mm
Compound and 0.2% particle diameter are the silicon dioxide gel mixing of 20nm, and ball milling 1h, obtains mixed slurry in spin ball mill,
Wherein, the consumption of alumina fibre accounts for the 5% of total mixed slurry quality.
(3) it is the powder hydrophobization of the lauryl sodium sulfate of slurry total amount 0.006wt% mixed slurry to be added into consumption
Dressing agent, pH value is adjusted to 5.5 with watery hydrochloric acid, and mechanical agitation carries out foaming 10min under 1900rpm, then on gypsum
Injection molding, on gypsum normal temperature and pressure dry 24h and obtain dry blank.
(4) blank is warming up to 1350 DEG C with the speed of 5 DEG C/min, sinters 2h, obtain the zirconium oxide with hole-closing structure
Enhancing alumina porous ceramic.
Embodiment 4：
(1) it is 2 according to volume ratio:3, the oxalic acid aqueous solution of 0.05M will be slowly added dropwise in the chromium oxychloride solution of 0.2M, stir
Mix and uniformly obtain zirconium colloidal sol, by aperture for the Electrochemical anodization of 20nm is submerged initially in 10min in zirconium colloidal sol, then immerse oxidation
10min in iridium precursor solution, takes out, and is dried under infrared lamp, then under argon atmosphere, 5h is sintered at 500 DEG C, obtains straight
Footpath is 50-300nm, the nanometer wire tetragonal zircite powder of yttria stabilised of the length more than 10 μm.
(2) by weight percentage, the nanometer wire tetragonal zircite powder of 1% yttria stabilised, 10% are contained
Weight ratio is 3:1 particle diameter is the hollow alumina ball of 50nm and a diameter of 5 μm, and length is mixed for the alumina fibre of 1-2mm
Compound and 0.2% particle diameter are the silicon dioxide gel mixing of 15nm, and ball milling 3h, obtains mixed slurry in spin ball mill,
Wherein, the consumption of alumina fibre accounts for the 4% of total mixed slurry quality.
(3) consumption is added to be repaiied for the powder hydrophobization of the sodium stearyl sulfate of slurry total amount 0.01wt% mixed slurry
Decorations agent, pH value to 4.5 is adjusted with watery hydrochloric acid, and mechanical agitation carries out foaming 10min at 1600 rpm, then notes on gypsum
Mould, dry blank is dried to obtain through intermittent type microwave.
(4) blank is warming up to 1650 DEG C with the speed of 5 DEG C/min, sinters 2h, obtain the zirconium oxide with hole-closing structure
Enhancing alumina porous ceramic.
Embodiment 5：
(1) it is 2 according to volume ratio:3, the oxalic acid aqueous solution of 0.05M will be slowly added dropwise in the chromium oxychloride solution of 0.2M, stir
Mix and uniformly obtain zirconium colloidal sol, by aperture for the Electrochemical anodization of 20nm is submerged initially in 10min in zirconium colloidal sol, then immerse oxidation
10min in iridium precursor solution, takes out, and is dried under infrared lamp, then under argon atmosphere, 5h is sintered at 500 DEG C, obtains straight
Footpath is 50-300nm, the nanometer wire tetragonal zircite powder of yttria stabilised of the length more than 10 μm.
(2) by weight percentage, the nanometer wire tetragonal zircite powder of 10% yttria stabilised, 20% are contained
Weight ratio is 1:1 particle diameter is 5 μm of hollow alumina ball and a diameter of 5 μm, and length is the mixing of the alumina fibre of 1-2mm
Thing and 0.5% particle diameter are the silicon dioxide gel mixing of 30nm, and ball milling 6h, obtains mixed slurry in spin ball mill, its
In, the consumption of alumina fibre accounts for the 6% of total mixed slurry quality.
(3) it is the powder hydrophobization dressing agent of the capric acid of slurry total amount 0.2wt% mixed slurry to be added into consumption, uses dilute salt
Acid for adjusting pH value to 5.5, at 1600 rpm mechanical agitation carry out foaming 10min, then injection molding on gypsum, in 70 DEG C of bakings
The blank of 6h is dried in case.
(4) blank is warming up to 1500 DEG C with the speed of 5 DEG C/min, sinters 2h, obtain the zirconium oxide with hole-closing structure
Enhancing alumina porous ceramic.
Embodiment 6：
(1) it is 2 according to volume ratio:3, the oxalic acid aqueous solution of 0.05M will be slowly added dropwise in the chromium oxychloride solution of 0.2M, stir
Mix and uniformly obtain zirconium colloidal sol, by aperture for the Electrochemical anodization of 20nm is submerged initially in 10min in zirconium colloidal sol, then immerse oxidation
10min in iridium precursor solution, takes out, and is dried under infrared lamp, then under argon atmosphere, 5h is sintered at 500 DEG C, obtains straight
Footpath is 50-300nm, the nanometer wire tetragonal zircite powder of yttria stabilised of the length more than 10 μm.
(2) by weight percentage, by the nanometer wire tetragonal zircite powder of 5.5% yttria stabilised, 25%
Ratio containing weight is 2:1 particle diameter is 1 μm of hollow alumina ball and a diameter of 5 μm, and length is mixed for the alumina fibre of 1-2mm
Compound and 0.4% particle diameter are the silicon dioxide gel mixing of 25nm, and ball milling 5h, obtains mixed slurry in spin ball mill,
Wherein, the consumption of alumina fibre accounts for the 7% of total mixed slurry quality.
(3) it is the powder hydrophobization dressing agent of the capric acid of slurry total amount 0.4wt% mixed slurry to be added into consumption, uses dilute salt
To 4.5, mechanical agitation carries out foaming 10min to acid for adjusting pH value under 1900rpm, then injection molding on gypsum, in 40 DEG C of bakings
24h is dried in case and obtains dry blank.
(4) blank is warming up to 1600 DEG C with the speed of 5 DEG C/min, sinters 2h, obtain the zirconium oxide with hole-closing structure
Enhancing alumina porous ceramic.
Comparative example：Silica material is removed, remaining condition is with reference to embodiment 1.
The porosity of the enhancing alumina porous ceramic of the zirconium oxide with hole-closing structure that after testing, prepared by embodiment 1-6,
The result of compression strength and thermal conductivity factor is as follows：
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative example | |
| Porosity (%) | 96.1 | 87.2 | 98.2 | 92.4 | 94.6 | 93.5 | 95.4 |
| Compression strength (MPa) | 1.21 | 11.8 | 0.06 | 8.97 | 6.49 | 9.52 | 0.58 |
| Thermal conductivity factor (W/Km) | 0.08 | 0.28 | 0.04 | 0.10 | 0.09 | 0.08 | 0.07 |
As seen from the above table, what prepared by the present invention has the porosity of the zirconium oxide enhancing alumina porous ceramic of hole-closing structure
High, compression strength is good, and thermal conductivity factor is low, and compared with the porous ceramics of same porosity, compression strength is significantly improved, thermal conductivity factor
Change is little.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
The personage for knowing this technology all can carry out modifications and changes under without prejudice to spirit and scope of the invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
Into all equivalent modifications or change, should be covered by claim of the invention.
Claims (9)
1. a kind of zirconium oxide with hole-closing structure strengthens the preparation method of alumina porous ceramic, it is characterised in that including with
Lower step：
(1) be the nanometer wire tetragonal zircite powder of 50nm-5 μm of yttria stabilised by particle diameter, particle diameter be 50nm-5 μm
The alumina powder and particle diameter of ball containing hollow alumina and alumina fibre mix for the silicon dioxide gel of 15-30nm, in rolling
Ball milling 1-6h in ball ball mill, obtains the mixed slurry that total solid content is 7-45%；
(2) mixed slurry for preparing step (1) adds consumption to be modified for the powder hydrophobization of slurry total amount 0.006-0.8wt%
Agent, pH value is adjusted to 3-9.5 with watery hydrochloric acid, and mechanical agitation carries out foaming 10min under 1600-1900rpm, then in plasterboard
Upper injection molding, is dried to obtain dry blank；
(3) blank for preparing step (2) is warming up to 1300-1650 DEG C with the speed of 5 DEG C/min, sinters 2h, obtains having and closes
The zirconium oxide enhancing alumina porous ceramic of pore structure.
2. a kind of zirconium oxide with hole-closing structure according to claim 1 strengthens the preparation side of alumina porous ceramic
Method, it is characterised in that：A diameter of 50- of the nanometer wire tetragonal zircite powder of yttria stabilised in the step (1)
300nm, length is more than 10 μm.
3. a kind of zirconium oxide with hole-closing structure according to claim 1 strengthens the preparation side of alumina porous ceramic
Method, it is characterised in that：The nanometer wire tetragonal zircite raw powder's production technology of yttria stabilised is in the step (1)：Will
Oxalic acid aqueous solution is slowly added dropwise in chromium oxychloride solution, zirconium colloidal sol is uniformly mixing to obtain, is the nanoporous oxygen of 20nm by aperture
Change aluminium film to be submerged initially in zirconium colloidal sol, then immerse in yttrium oxide precursor solution, take out, dried under infrared lamp, then in argon gas
Under atmosphere, the nanometer wire tetragonal zircite powder that 5h obtains yttria stabilised is sintered at 500 DEG C.
4. a kind of zirconium oxide with hole-closing structure according to claim 1 strengthens the preparation side of alumina porous ceramic
Method, it is characterised in that：Hollow alumina in the alumina powder of ball containing hollow alumina and alumina fibre in the step (1)
The weight ratio of ball and alumina fibre is 1-3:1, the consumption of wherein alumina fibre accounts for the 3-10% of total mixed slurry quality, institute
State alumina fibre a diameter of 5 μm, length is 1-2mm.
5. a kind of zirconium oxide with hole-closing structure according to claim 1 strengthens the preparation side of alumina porous ceramic
Method, it is characterised in that：Component in the step (1) in mixed slurry, by weight percentage, including Zirconium powder 1-
10%th, alumina powder 5-35%, silicon dioxide gel 0.2-0.5%.
6. a kind of zirconium oxide with hole-closing structure according to claim 1 strengthens the preparation side of alumina porous ceramic
Method, it is characterised in that：Powder hydrophobization dressing agent is capric acid, sodium hexadecyl sulfate, octadecyl sulfuric acid in the step (2)
One kind in sodium, lauryl sodium sulfate.
7. a kind of zirconium oxide with hole-closing structure according to claim 1 strengthens the preparation side of alumina porous ceramic
Method, it is characterised in that：When powder hydrophobization dressing agent is capric acid in the step (2), pH value is 4.5-5.5.
8. a kind of zirconium oxide with hole-closing structure according to claim 1 strengthens the preparation side of alumina porous ceramic
Method, it is characterised in that：Drying means is that normal temperature and pressure is dried, done in 40-70 DEG C of baking oven on gypsum in the step (2)
Dry or intermittent type microwave is dried, and preferably normal temperature and pressure is dried on gypsum.
9. a kind of zirconium oxide with hole-closing structure according to claim 1 strengthens the preparation side of alumina porous ceramic
Method, it is characterised in that：The porosity of the zirconium oxide enhancing alumina porous ceramic with hole-closing structure is not low in the step (3)
In 88%, compression strength is more than 1.5 times of the alumina porous ceramic compression strength under same porosity, and thermal conductivity factor is not high
In 0.28W/Km.
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| CN108286031A (en) * | 2018-04-04 | 2018-07-17 | 中国兵器工业第五二研究所烟台分所有限责任公司 | A kind of graphite liner plate of ceramic embedded pipe and preparation method thereof |
| CN112645696A (en) * | 2020-12-30 | 2021-04-13 | 深圳天一山科技有限公司 | Alumina-reinforced ZTA ceramic substrate and preparation method thereof |
| CN113045333A (en) * | 2021-03-16 | 2021-06-29 | 上海大学 | Magnesium oxide foamed ceramic and preparation method thereof |
| CN113200738A (en) * | 2021-05-25 | 2021-08-03 | 江苏省陶瓷研究所有限公司 | Low-glass-phase porous ceramic material, porous ceramic and preparation method thereof |
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- 2016-12-26 CN CN201611216522.0A patent/CN106830961A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108286031A (en) * | 2018-04-04 | 2018-07-17 | 中国兵器工业第五二研究所烟台分所有限责任公司 | A kind of graphite liner plate of ceramic embedded pipe and preparation method thereof |
| CN112645696A (en) * | 2020-12-30 | 2021-04-13 | 深圳天一山科技有限公司 | Alumina-reinforced ZTA ceramic substrate and preparation method thereof |
| CN113045333A (en) * | 2021-03-16 | 2021-06-29 | 上海大学 | Magnesium oxide foamed ceramic and preparation method thereof |
| CN113200738A (en) * | 2021-05-25 | 2021-08-03 | 江苏省陶瓷研究所有限公司 | Low-glass-phase porous ceramic material, porous ceramic and preparation method thereof |
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