CN1257132C - High tetragonal phase zirconia-alumina composite powder and preparation method thereof - Google Patents
High tetragonal phase zirconia-alumina composite powder and preparation method thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 16
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 29
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 15
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 13
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 17
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 229910052726 zirconium Inorganic materials 0.000 claims description 12
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 11
- 239000011259 mixed solution Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 5
- 159000000013 aluminium salts Chemical class 0.000 claims description 5
- VCRLKNZXFXIDSC-UHFFFAOYSA-N aluminum oxygen(2-) zirconium(4+) Chemical compound [O--].[O--].[Al+3].[Zr+4] VCRLKNZXFXIDSC-UHFFFAOYSA-N 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000000967 suction filtration Methods 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical group Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 3
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- ATYZRBBOXUWECY-UHFFFAOYSA-N zirconium;hydrate Chemical compound O.[Zr] ATYZRBBOXUWECY-UHFFFAOYSA-N 0.000 claims description 3
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 2
- 239000012071 phase Substances 0.000 abstract description 26
- 239000000919 ceramic Substances 0.000 abstract description 14
- 239000002002 slurry Substances 0.000 abstract description 10
- 238000001179 sorption measurement Methods 0.000 abstract description 5
- 239000007790 solid phase Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000002352 surface water Substances 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
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- 238000005516 engineering process Methods 0.000 description 6
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- 239000000047 product Substances 0.000 description 4
- 238000007669 thermal treatment Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 2
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- -1 silicon nitrides Chemical class 0.000 description 2
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- 229910052727 yttrium Inorganic materials 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
- DUNKXUFBGCUVQW-UHFFFAOYSA-J zirconium tetrachloride Chemical compound Cl[Zr](Cl)(Cl)Cl DUNKXUFBGCUVQW-UHFFFAOYSA-J 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
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- Inorganic Compounds Of Heavy Metals (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses high tetragonal phase zirconia-alumina composite powder and a preparation method thereof. In order to meet the requirements of preparing high-performance ceramics, high-concentration and low-viscosity slurry and powder with high tetragonal zirconia content are required, the invention solves the problems of low tetragonal content, large surface water adsorption amount and the like of zirconia powder in the prior art, adopts a heterogeneous precipitation method to coat an alumina layer on the surface of zirconia, and then makes the alumina generated by heat treatment solidify on the surface of zirconia. The invention improves the tetragonal phase content in the zirconia powder, increases the utilization rate of the zirconia powder in the preparation of ceramics, combines the zirconia powder and the alumina powder into relatively larger particles through heat treatment, reduces the surface water absorption amount, and increases the solid phase content when preparing low-viscosity slurry. Meanwhile, the coating of the aluminum oxide layer effectively inhibits the growth of zirconium oxide grains at high temperature, and is beneficial to the generation of zirconium oxide and aluminum oxide fine-grain ceramics.
Description
Technical field
The present invention relates to a kind of Zirconia-alumina composite powder for preparing ceramic usefulness and preparation method thereof, specifically, the present invention relates to high Zirconia-alumina composite powder of a kind of cubic phase content of the alumina-coated for preparing high-intensity high-tenacity pottery usefulness and preparation method thereof.
Background technology
High-performance zirconia must adopt fine powder and suitable Technology.At present, quality oxide zirconium based ceramic powder material is by the preparation of basic zirconium chloride (the water-soluble salt that contains yttrium or the cerium) precipitator method, is prepared into the zirconium white powder through thermal treatment then.Between the 30-100 nanometer, tetragonal phase zirconium oxide content is fit to dry-press process through granulation about 50% by the powder particle size of this method preparation, and the ceramics strength of its pressureless sintering is at 600～800MPa, and fracture toughness property is at 10～12MPam
1/2Perhaps use coprecipitation method preparations such as basic zirconium chloride (the water-soluble salt that contains yttrium or cerium) and aluminum soluble salt, be prepared into zirconium white and aluminum oxide composite powder through thermal treatment then, ceramic performance dry-pressing formed, pressureless sintering is better than preceding a kind of method.The high tenacity pottery requires crystal grain tiny, the second phase crystal grain is close with basic grain size, usually must adopt special production technique (as sintering hot pressing) just can reach above-mentioned requirements, as preparing ceramics strength at 1000～1600MPa with hot pressed sintering, fracture toughness property is at 14～18MPam
1/2, but production cost height can not be made the product of complicated shape.Utilize second to strengthen flexible nano ceramics technology mutually and increased substantially the strength of materials in recent years, but toughness of material is not significantly increased, and will uses Fast Sintering equipment, can not make the product of complicated shape.The nineties in last century, the development of ceramic wet forming technique is rapid, and the stupalith for preparing complicated shape for low cost has been established the technology basis.One of its gordian technique is preparation high density, low viscous slurry.With the gel-casting technology is example, and this processing unit is simple, and the blank density height of moulding, intensity is big, shrinking percentage is less, and ceramic product reliability height is with existing more research of pottery and application such as the aluminum oxide of this method preparation and silicon nitrides.But because high-performance zirconia base pottery uses nanopowder, high density, low viscous pulp preparation difficulty, relevant research is less.
The nano zircite powder is because its bigger specific surface area, thereby has the bigger surface adsorption water yield, and assembles easily and make the zirconium white grain growth, and granularity increases, and has reduced the content of tetragonal phase zirconium oxide.The volume fraction maximum of zirconium white powder can only reach 25～28% during the preparation low viscosity slurry, can not satisfy the wet moulding requirement of high solid phase, low viscosity slurry.
Summary of the invention
The high tetragonal phase zirconium oxide powder of needs when preparing pottery with high density, low viscosity slurry in order to satisfy, the invention solves problems such as the cubic phase content that the zirconium white powder exists in the prior art is low, the surface adsorption water yield is big, propose a kind of high tetragonal phase zirconium oxide-aluminum oxide composite powder and preparation method thereof.
High tetragonal phase zirconium oxide of the present invention-aluminum oxide composite powder is made up of the component that comprises following weight per-cent: the zirconia blend 80～95% that contains yttrium oxide, aluminum oxide 5～20%, wherein yttrium oxide accounts for 4.37～6.04% of zirconia blend gross weight; Powder particle size is 100～200nm, and alumina-coated is on zirconic surface, and wherein tetragonal phase zirconium oxide accounts for the 70-90% of zirconium white volume total amount.
The preparation method of high tetragonal phase zirconium oxide of the present invention-aluminum oxide composite powder may further comprise the steps:
(1) raw material powdered zirconium oxide and water are made into suspension according to weight ratio 1: 1～3 mixing stirrings; It is 20～60% the aqueous solution that aluminium salt is made into weight percent concentration; The two is mixed stirring obtain zirconium white-aluminium salt mixed solution; Described raw material zirconium white fine powder particle diameter is 30～70nm, contains the yttrium oxide that accounts for zirconium white and yttrium oxide gross weight 4.37～6.04% in the described fine powder;
(2) under agitation, ammoniacal liquor slowly being splashed in zirconium white-aluminium salt mixed solution that step (1) obtains, is 8～10 until the pH of mixed solution value, and is to keep filtering in 2 hours under 8～10 the condition in the pH value, and washing is to neutral, and suction filtration obtains powder;
(3) the powder drying that step (2) is obtained is heat-treated then and is made the aluminium hydroxide that is coated on the powdered zirconium oxide surface be decomposed into aluminum oxide, obtains the Zirconia-alumina composite powder of high cubic phase.
Described particle diameter is that the raw material powdered zirconium oxide that contains weight percent 4.37～6.04% yttrium oxide of 30～70nm is a market product.
The preferred aluminum chloride of described aluminium salt or its hydrate, aluminum nitrate or its hydrate, Tai-Ace S 150 or its hydrate, two or more mixture in them.
Described heat treating method preferably kept 0.5～3 hour under 900～1200 ℃ of temperature.The heat-up rate that is more preferably with 100 ℃/h is warming up to 200～300 ℃, keeps in 2 hours at 200～300 ℃, rises to 900～1200 ℃ and kept 0.5～3 hour with same heat-up rate then.The water yield and the crystal water of surface adsorption can be removed the generation aluminum oxide down at 200～300 ℃, under 900～1200 ℃, aluminum oxide and zirconium white be formed composition particles.
High tetragonal phase zirconium oxide-aluminum oxide the composite powder of the present invention's preparation is used to prepare the high-intensity high-tenacity zirconia-based ceramics.For example can use injectiong coagulation shaping technology and pressureless sintering method to obtain the high-intensity high-tenacity zirconia-based ceramics, concrete preparation process is as follows:
(1) acrylamide, linking agent being made into weight percent by weight 20: 0.8～1.2 is 14% water base premixed liquid;
(2) will be that the water base premixed liquid of zirconium white powder, dispersion agent and the step (1) of 70-90% mixes according to weight ratio 100: 1～1.8: 25～28 by the tetragonal phase zirconium oxide content on alumina-coated powdered zirconium oxide surface, and grind and make slurry;
(3) slurry that step (2) is obtained vacuumizes the aqueous solution that adds solidifying agent after the degasification, slurry and weight percent are that the weight ratio of 1% aqueous solution of curing agent is 100: 0.5～1, casting at room temperature, solidify down at 60～80 ℃, dry back pre-burning binder removal, descended normal pressure-sintered 1～3 hour at 1500～1700 ℃ then, obtain the high-intensity high-tenacity zirconia-based ceramics.
The preferred N of described linking agent, N-methylene diacrylamine, described dispersion agent optimization polypropylene acid ammonium, described solidifying agent initiator system of ammonium persulfate.
The present invention utilizes the non-homogeneous phase deposition principle, coats one deck alumina layer in the zirconium surface that contains yttrium oxide, makes it generate aluminum oxide by thermal treatment then and is cemented in zirconium surface.Because outer oxide aluminium produces effect of contraction to the internal layer zirconium white, has suppressed crystal conversion, has improved the cubic phase content of zirconium white powder, the utilization ratio of zirconium white powder is improved.The cubic phase volume content that contains the raw material powdered zirconium oxide of weight percent 5.21% yttrium oxide is about 51% o'clock of zirconium white cumulative volume, and cubic phase volume content is about 80% of zirconium white cumulative volume in the powder that the present invention makes.Aluminium oxide-zirconium oxide grain graininess after the thermal treatment simultaneously increases, when the particle diameter of raw material powdered zirconium oxide is about 30～50nm, the powder particle size that the present invention makes is increased to 100～200nm, reduced the surface adsorption water yield, it is electrical that aluminum oxide has changed zirconium surface, thereby improved the consistency with dispersion agent.Can reach 35～40% by solid volume fraction in the low viscosity slurry of powder preparation of the present invention, and overcome the shortcoming of annotating body drying condition strictness when congealing into type preparation pottery, coat one deck alumina layer simultaneously and suppressed zirconium white grain growth under the high temperature effectively, the cubic phase content of zirconium white powder increases, pressureless sintering can obtain the pottery of high-toughness high-strength, intensity is 700～1000MPa, and toughness reaches 15～17MPam
1/2
Embodiment
Adopt the mode of embodiment to further specify high tetragonal phase zirconium oxide powder of the present invention and preparation method thereof below, but the present invention is not limited to these embodiment.
Embodiment 1
With particle diameter is that the powdered zirconium oxide 100g that contains 5.21% (weight ratio) yttrium oxide of 30～50nm joins to stir in the 200g water and is mixed with suspension; Al (NO with 36.76g
3)
310H
2It is 20% the aqueous solution that O is made into mass percent concentration; With the two mixing, under agitation slow titration ammoniacal liquor, the pH value slowly is adjusted to 8～10, Al (NO in this process from 3～4
3)
3Generate Al (OH)
3Homogeneously precipitate in zirconic surface, keep the pH value at 8～10 times 1 hour, filter, the washing powder is to neutral, heat-treat after suction filtration, the drying, heat-up rate is 100 ℃/h, 280 ℃ of insulations 0.5 hour, continue to be warming up to 1050 ℃ then, be incubated 2 hours, obtain high tetragonal phase zirconium oxide of the present invention-aluminum oxide composite powder, particle diameter is 100-200nm, tetragonal phase zirconium oxide content is about the 75-80% of zirconium white total amount, and the zirconia content that contains weight percent 5.21% yttrium oxide is 95%, and alumina content is 5%.
Embodiment 2
With particle diameter is that the powdered zirconium oxide 100g that contains the 3mol% yttrium oxide of 30～50nm joins to stir in the 200g water and is mixed with suspension; AlCl with 94.7g
36H
2It is 40% the aqueous solution that O is made into mass percent concentration; With the two mixing, under agitation slow titration ammoniacal liquor, the pH value slowly is adjusted to 8～10, AlCl in this process
3Generate Al (OH)
3Homogeneously precipitate in zirconic surface, keep the pH value, filter at 8～10 times 1 hour, the washing powder is heat-treated after suction filtration, the drying to neutral, and heat-up rate is 100 ℃/h, 280 ℃ of insulations 0.5 hour, continue to be warming up to 1150 ℃ then, be incubated 2 hours, obtain high tetragonal phase zirconium oxide powder of the present invention, particle diameter is 100-200nm, tetragonal phase zirconium oxide content is about the 75-80% of zirconium white total amount, and the zirconia content that contains 5.21% yttrium oxide is 80%, and alumina content is 20%.
Claims (5)
1. one kind high tetragonal phase zirconium oxide-aluminum oxide composite powder, it is characterized in that it is made up of the component that comprises following weight per-cent: the zirconia blend 80～95% that contains yttrium oxide, aluminum oxide 5～20%, wherein yttrium oxide accounts for 4.37～6.04% of zirconia blend gross weight; Powder particle size is 100～200nm, and alumina-coated is on zirconic surface, and wherein tetragonal phase zirconium oxide accounts for the 70-90% of zirconium white volume total amount, and described high tetragonal phase zirconium oxide-aluminum oxide composite powder is made by following preparation method:
(1) raw material powdered zirconium oxide and water are made into suspension according to weight ratio 1: 1～3 mixing stirrings; It is 20～60% the aqueous solution that aluminium salt is made into weight percent concentration; The two is mixed stirring obtain zirconium white-aluminium salt mixed solution; Described raw material zirconium white fine powder particle diameter is 30～70nm, contains the yttrium oxide that accounts for zirconium white and yttrium oxide gross weight 4.37～6.04% in the described fine powder;
(2) under agitation, ammoniacal liquor being splashed in zirconium white-aluminium salt mixed solution that step (1) obtains, is 8～10 until the pH of mixed solution value, and is to keep filtering in 2 hours under 8～10 the condition in the pH value, and washing is to neutral, and suction filtration obtains powder;
(3) the powder drying that step (2) is obtained is heat-treated then and is made the aluminium hydroxide that is coated on the powdered zirconium oxide surface be decomposed into aluminum oxide, obtains the zirconium white-aluminum oxide composite powder of high cubic phase.
2. the preparation method of the described high tetragonal phase zirconium oxide of claim 1-aluminum oxide composite powder is characterized in that it may further comprise the steps:
(1) raw material powdered zirconium oxide and water are made into suspension according to weight ratio 1: 1～3 mixing stirrings; It is 20～60% the aqueous solution that aluminium salt is made into weight percent concentration; The two is mixed stirring obtain zirconium white-aluminium salt mixed solution; Described raw material zirconium white fine powder particle diameter is 30～70nm, contains the yttrium oxide that accounts for zirconium white and yttrium oxide gross weight 4.37～6.04% in the described fine powder;
(2) under agitation, ammoniacal liquor being splashed in zirconium white-aluminium salt mixed solution that step (1) obtains, is 8～10 until the pH of mixed solution value, and is to keep filtering in 2 hours under 8～10 the condition in the pH value, and washing is to neutral, and suction filtration obtains powder;
(3) the powder drying that step (2) is obtained is heat-treated then and is made the aluminium hydroxide that is coated on the powdered zirconium oxide surface be decomposed into aluminum oxide, obtains the zirconium white-aluminum oxide composite powder of high cubic phase.
3. preparation method according to claim 2 is characterized in that described aluminium salt is aluminum chloride or its hydrate, aluminum nitrate or its hydrate, Tai-Ace S 150 or its hydrate, two or more mixture in them.
4. preparation method according to claim 2 is characterized in that the heat treating method described in the step (3) is for to keep 0.5～3 hour under 900～1200 ℃ of temperature.
5. preparation method according to claim 2, it is characterized in that the heat treating method described in the step (3) is: the heat-up rate with 100 ℃/h is warming up to 200～300 ℃, keep in 2 hours at 200～300 ℃, rise to 900～1200 ℃ and kept 0.5～3 hour with same heat-up rate then.
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| CN101318824B (en) * | 2008-06-30 | 2012-02-22 | 中国科学院上海硅酸盐研究所 | Yttrium coated stable zirconium oxide powder, preparation and application thereof |
| CN101870587B (en) * | 2009-04-24 | 2013-05-01 | 中国科学院福建物质结构研究所 | Nano nonoclinic phase zirconium oxide material and synthesis method thereof |
| CN101538154B (en) * | 2009-04-28 | 2012-01-25 | 上海景文材料科技发展有限公司 | Spontaneous hydro-thermal method for preparing special composite nano ceramic powder for ceramic tooth |
| CN102245008B (en) * | 2010-05-10 | 2015-06-03 | 陈惠敏 | Circuit noise inhibiting method and inhibiting object thereof |
| CN102603272A (en) * | 2012-03-08 | 2012-07-25 | 江汉大学 | Ceramic material and preparation method thereof |
| CN109093061B (en) * | 2018-09-19 | 2020-08-14 | 北京仁创砂业铸造材料有限公司 | Ceramsite sand and preparation method thereof, cold-box sand and solidification process thereof |
| TW202132222A (en) * | 2019-12-24 | 2021-09-01 | 日商關東電化工業股份有限公司 | Coated zirconia microparticle and method for producing same |
| CN114524456A (en) * | 2022-03-29 | 2022-05-24 | 赛科络纳米新材料(苏州)有限公司 | Nano zirconium oxide material and synthetic method thereof |
| CN116854466B (en) * | 2023-06-28 | 2024-03-15 | 成都三环科技有限公司 | Ceramic ferrule and preparation method and application thereof |
| CN116751077B (en) * | 2023-06-28 | 2024-05-14 | 浙江大学 | Method for preparing alumina micro-nano structural layer on zirconia surface based on secondary precipitation-heat treatment, product and application thereof |
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