CN113321505A - Zirconia-based ceramic material and preparation method thereof - Google Patents
Zirconia-based ceramic material and preparation method thereof Download PDFInfo
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- CN113321505A CN113321505A CN202110884903.0A CN202110884903A CN113321505A CN 113321505 A CN113321505 A CN 113321505A CN 202110884903 A CN202110884903 A CN 202110884903A CN 113321505 A CN113321505 A CN 113321505A
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- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 229910010293 ceramic material Inorganic materials 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims abstract description 15
- 239000003381 stabilizer Substances 0.000 claims abstract description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 11
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 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 claims abstract description 8
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 87
- 239000002994 raw material Substances 0.000 claims description 55
- 239000000919 ceramic Substances 0.000 claims description 31
- 238000005245 sintering Methods 0.000 claims description 29
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 15
- 238000000498 ball milling Methods 0.000 claims description 14
- 238000009694 cold isostatic pressing Methods 0.000 claims description 14
- 238000003826 uniaxial pressing Methods 0.000 claims description 14
- 238000005303 weighing Methods 0.000 claims description 14
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 4
- 239000003462 bioceramic Substances 0.000 abstract description 9
- 230000032683 aging Effects 0.000 abstract description 7
- 239000007943 implant Substances 0.000 abstract description 7
- 229910052593 corundum Inorganic materials 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 239000003826 tablet Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 6
- 210000000214 mouth Anatomy 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000012217 deletion Methods 0.000 description 2
- 230000037430 deletion Effects 0.000 description 2
- 239000004053 dental implant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 208000002354 Edentulous Jaw Diseases 0.000 description 1
- 206010044048 Tooth missing Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- 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
- C04B35/48—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 zirconium or hafnium oxides, zirconates, zircon or hafnates
-
- A—HUMAN NECESSITIES
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/02—Inorganic materials
- A61L27/10—Ceramics or glasses
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/02—Inorganic materials
- A61L27/10—Ceramics or glasses
- A61L27/105—Ceramics or glasses containing Al2O3
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
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- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/12—Materials or treatment for tissue regeneration for dental implants or prostheses
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- 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
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- 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
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
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- 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
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
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- C04B2235/658—Atmosphere during thermal treatment
- C04B2235/6583—Oxygen containing atmosphere, e.g. with changing oxygen pressures
Abstract
The invention relates to a zirconia-based ceramic material and a preparation method thereof, in order to inhibit the transformation of tetragonal phase to monoclinic phase of zirconia in the environment and improve the low-temperature aging performance of the zirconia, the invention takes 3Y-TZP (yttria-stabilized tetragonal polycrystalline zirconia, wherein the molar content of yttria is 3 percent) and takes alumina and/or ceria as a stabilizer to prepare Y2O3‑ZrO2‑Al2O3/CeO2Composite ceramic materials. Research shows that the performance of the zirconia-based bioceramic can be greatly optimized by adding the stabilizer, the service life of the zirconia-based bioceramic serving as the oral implant is prolonged, and the effect obtained by simultaneously adding the two stabilizers is better than that of a single stabilizerMore preferably.
Description
Technical Field
The invention relates to the field of ceramic materials, in particular to a zirconia-based ceramic material and a preparation method thereof.
Background
Ceramics refer to a class of inorganic non-metallic materials prepared by forming and high-temperature sintering natural or artificially synthesized powder compounds, and are widely applied to various fields due to the advantages of high hardness, high melting point, high corrosion resistance and the like.
In addition, oral implantation refers to a method of supporting and fixing a denture to complete the restoration of an edentulous tooth by implanting a dental implant into an alveolar bone. With the advancement of oral implant technology, the purpose of oral implant is developed from early restoration of tooth missing function to higher pursuit of restoration of beauty and health nowadays; indications also extend from edentulous jaw or free end deletions to various types of dental deletions. In addition, the implant can also be used for repairing the craniomaxillofacial defect of the oral cavity so as to solve the retention problem of the prosthesis.
Due to the special environment of the dental implant in the oral cavity, the implant material must have the following conditions: firstly, oral tissues have better tolerance to materials, and the materials have no or very weak chemical stimulation to the tissues and do not generate bone absorption; secondly, the coating has corrosion resistance to body fluid and can maintain the required mechanical property for a long time; ③ must have good biocompatibility; the material has good biomechanical adaptability to bone tissues. Because of its excellent corrosion resistance and biocompatibility, the inert bioceramic zirconia has become a widely used oral implant material. However, in the low temperature and humidity environment of the oral cavity, the zirconia bioceramic undergoes a T-M phase change, thereby reducing its mechanical properties, which is called the low temperature aging process. In view of this, how to maintain the good low-temperature aging performance of the bioceramic zirconia directly determines the use time of the bioceramic zirconia in the oral cavity.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a zirconia-based ceramic material and a preparation method thereof, so as to solve the problem that the traditional zirconia ceramic is poor in low-temperature aging performance.
A preparation method of a zirconia-based ceramic material comprises the following steps:
A. accurately weighing yttria-stabilized zirconia powder and stabilizer powder according to the stoichiometric proportion as raw materials, and calcining the raw material powder at 880-950 ℃ for 2.5-3.0 h;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20-24h in an ethanol environment;
C. using a tablet press to perform uniaxial pressing under the pressure of 25-28MPa to obtain a biological ceramic blank;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250-260 MPa;
E. sintering in air for 2.5-3.0h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1200-1400 ℃.
Further, the yttria-stabilized zirconia powder has a molar content of yttria of 3%.
Further, the zirconia is tetragonal polycrystalline phase.
Further, the stabilizer is one or two of alumina or cerium dioxide.
Further, the content of the stabilizer is 0.5 wt% to 2.4 wt%.
Further, the stabilizer is alumina and ceria.
Further, the content of the alumina is 1.0wt%, and the content of the ceria is 1.4 wt%.
In addition, the invention also provides a zirconia-based ceramic material, which is prepared by the method.
In order to inhibit the transformation of tetragonal phase to monoclinic phase of zirconia in the environment and improve the low-temperature aging performance of the zirconia, the invention takes 3Y-TZP (yttria-stabilized tetragonal polycrystalline zirconia with the molar content of yttria being 3 percent) and takes alumina and/or cerium dioxide as a stabilizing agent to prepare Y2O3-ZrO2-Al2O3/CeO2A composite biological ceramic material. Researches show that the performance of the zirconia-based bioceramic can be greatly optimized by adding the stabilizer, the service life of the zirconia-based bioceramic as an oral implant is prolonged, and the effect obtained by simultaneously adding the two stabilizers is better than that of a single stabilizer.
Detailed Description
The technical effects of the present invention are demonstrated below by specific examples, but the embodiments of the present invention are not limited thereto.
Example 1
A. Accurately weighing 3Y-TZP powder and Al according to stoichiometric2O3The powder is used as raw material, and the raw material powder is calcined at 880 deg.C for 2.5h, wherein Al is2O3The mass content of the powder is raw material powder0.5% of the total mass;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20h in an ethanol environment;
C. obtaining a biological ceramic blank by using a tablet press under the condition of 25MPa through uniaxial pressing;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250 MPa;
E. sintering in air for 2.5h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1400 ℃.
Example 2
A. Accurately weighing 3Y-TZP powder and Al according to stoichiometric2O3The powder is used as raw material, and the raw material powder is calcined at 880 deg.C for 2.5h, wherein Al is2O3The mass content of the powder is 1.0 percent of the total mass of the raw material powder;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20h in an ethanol environment;
C. obtaining a biological ceramic blank by using a tablet press under the condition of 25MPa through uniaxial pressing;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250 MPa;
E. sintering in air for 2.5h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1400 ℃.
Example 3
A. Accurately weighing 3Y-TZP powder and Al according to stoichiometric2O3The powder is used as raw material, and the raw material powder is calcined at 880 deg.C for 2.5h, wherein Al is2O3The mass content of the powder is 1.4 percent of the total mass of the raw material powder;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20h in an ethanol environment;
C. obtaining a biological ceramic blank by using a tablet press under the condition of 25MPa through uniaxial pressing;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250 MPa;
E. sintering in air for 2.5h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1400 ℃.
Example 4
A. According to the chemistryAccurately weighing 3Y-TZP powder and Al2O3The powder is used as raw material, and the raw material powder is calcined at 880 deg.C for 2.5h, wherein Al is2O3The mass content of the powder is 2.0 percent of the total mass of the raw material powder;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20h in an ethanol environment;
C. obtaining a biological ceramic blank by using a tablet press under the condition of 25MPa through uniaxial pressing;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250 MPa;
E. sintering in air for 2.5h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1400 ℃.
Example 5
A. Accurately weighing 3Y-TZP powder and CeO according to stoichiometry2The powder is used as raw material, and the raw material powder is calcined at 880 deg.C for 2.5h, wherein CeO is present2The mass content of the powder is 0.5 percent of the total mass of the raw material powder;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20h in an ethanol environment;
C. obtaining a biological ceramic blank by using a tablet press under the condition of 25MPa through uniaxial pressing;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250 MPa;
E. sintering in air for 2.5h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1400 ℃.
Example 6
A. Accurately weighing 3Y-TZP powder and CeO according to stoichiometry2The powder is used as raw material, and the raw material powder is calcined at 880 deg.C for 2.5h, wherein CeO is present2The mass content of the powder is 1.0 percent of the total mass of the raw material powder;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20h in an ethanol environment;
C. obtaining a biological ceramic blank by using a tablet press under the condition of 25MPa through uniaxial pressing;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250 MPa;
E. sintering in air for 2.5h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1400 ℃.
Example 7
A. Accurately weighing 3Y-TZP powder and CeO according to stoichiometry2The powder is used as raw material, and the raw material powder is calcined at 880 deg.C for 2.5h, wherein CeO is present2The mass content of the powder is 1.4 percent of the total mass of the raw material powder;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20h in an ethanol environment;
C. obtaining a biological ceramic blank by using a tablet press under the condition of 25MPa through uniaxial pressing;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250 MPa;
E. sintering in air for 2.5h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1400 ℃.
Example 8
A. Accurately weighing 3Y-TZP powder and CeO according to stoichiometry2The powder is used as raw material, and the raw material powder is calcined at 880 deg.C for 2.5h, wherein CeO is present2The mass content of the powder is 2.0 percent of the total mass of the raw material powder;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20h in an ethanol environment;
C. obtaining a biological ceramic blank by using a tablet press under the condition of 25MPa through uniaxial pressing;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250 MPa;
E. sintering in air for 2.5h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1400 ℃.
Example 9
A. Accurately weighing 3Y-TZP powder and Al according to stoichiometric2O3Powder and CeO2The powder is used as raw material, and the raw material powder is calcined at 880 deg.C for 2.5h, wherein Al is2O3The mass content of (A) is 1.0% of the total mass of the raw material powder, CeO2The mass content of the powder is 1.4 percent of the total mass of the raw material powder;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20h in an ethanol environment;
C. obtaining a biological ceramic blank by using a tablet press under the condition of 25MPa through uniaxial pressing;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250 MPa;
E. sintering in air for 2.5h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1400 ℃.
Example 10
A. Accurately weighing 3Y-TZP powder and Al according to stoichiometric2O3The powder is used as raw material, and the raw material powder is calcined at 880 deg.C for 2.5h, wherein Al is2O3The mass content of the powder is 2.4 percent of the total mass of the raw material powder;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20h in an ethanol environment;
C. obtaining a biological ceramic blank by using a tablet press under the condition of 25MPa through uniaxial pressing;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250 MPa;
E. sintering in air for 2.5h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1400 ℃.
Example 11
A. Accurately weighing 3Y-TZP powder and CeO according to stoichiometry2The powder is used as raw material, and the raw material powder is calcined at 880 deg.C for 2.5h, wherein CeO is present2The mass content of the powder is 2.4 percent of the total mass of the raw material powder;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20h in an ethanol environment;
C. obtaining a biological ceramic blank by using a tablet press under the condition of 25MPa through uniaxial pressing;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250 MPa;
E. sintering in air for 2.5h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1400 ℃.
Example 12
A. Accurately weighing 3Y-TZP powder and Al according to stoichiometric2O3Powder and CeO2The powder is used as raw material, and the raw material powder is calcined at 880 deg.C for 2.5h, wherein Al is2O3Is prepared from the raw materials1.0% of the total mass of the powder, CeO2The mass content of the powder is 1.0 percent of the total mass of the raw material powder;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20h in an ethanol environment;
C. obtaining a biological ceramic blank by using a tablet press under the condition of 25MPa through uniaxial pressing;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250 MPa;
E. sintering in air for 2.5h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1400 ℃.
Next, a low-temperature aging test was performed on different samples in 130 ℃ steam for 72 hours by using a high-pressure autoclave, and the bioceramic material prepared from the 3Y-TZP powder was used as a control group. The phase transition content of all experimental samples was measured using an X-ray diffractometer using the diffraction target Cu-ka at an operating voltage of 40kV and an operating current of 40mA at a scanning speed of 0.02 °/s and a scanning range of 27-33 ° (2 θ).
TABLE 1 phase transition content of each sample
| Numbering | Content of phase transition of each sample/%) |
| Example 1 | 25.37 |
| Example 2 | 22.89 |
| Example 3 | 15.54 |
| Example 4 | 14.31 |
| Example 5 | 28.96 |
| Example 6 | 23.76 |
| Example 7 | 17.21 |
| Example 8 | 15.20 |
| Example 9 | 7.52 |
| Example 10 | 12.28 |
| Example 11 | 13.01 |
| Example 12 | 12.99 |
| Control group | 47.69 |
Adding Al to Y-TZP (yttria stabilized tetragonal polycrystalline zirconia) material2O3Or CeO2And then, t (tetragonal phase) → m (monoclinic phase) transformation of the biological ceramic can be effectively prevented, and further the low-temperature aging performance of the ceramic material is improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A preparation method of a zirconia-based ceramic material is characterized by comprising the following steps: the method comprises the following steps:
A. accurately weighing yttria-stabilized zirconia powder and stabilizer powder according to the stoichiometric proportion as raw materials, and calcining the raw material powder at 880-950 ℃ for 2.5-3.0 h;
B. putting the raw material powder into a planetary ball mill, and carrying out ball milling for 20-24h in an ethanol environment;
C. using a tablet press to perform uniaxial pressing under the pressure of 25-28MPa to obtain a biological ceramic blank;
D. adopting a cold isostatic pressing process to further densify the biological ceramic blank under the pressure of 250-260 MPa;
E. sintering in air for 2.5-3.0h to obtain the zirconia biological ceramic material, wherein the sintering temperature is 1200-1400 ℃.
2. A method of making according to claim 1, wherein: the molar content of yttria in the yttria-stabilized zirconia powder is 3%.
3. A method of making according to claim 1, wherein: the zirconia is in a tetragonal polycrystalline phase.
4. A method of making according to claim 1, wherein: the stabilizer is one or two of alumina or cerium dioxide.
5. A method of making according to claim 1, wherein: the content of the stabilizer is 0.5 wt% to 2.4 wt%.
6. A method of preparing as defined in claim 4, wherein: the stabilizing agent is alumina and cerium dioxide.
7. A method of preparing as defined in claim 4, wherein: the content of the alumina is 1.0wt%, and the content of the ceria is 1.4 wt%.
8. A zirconia-based ceramic material, characterized in that it has been prepared by a process according to any one of claims 1 to 7.
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