CN107573066B - Ceramic load bearing board and preparation method thereof - Google Patents
Ceramic load bearing board and preparation method thereof Download PDFInfo
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- CN107573066B CN107573066B CN201710963339.5A CN201710963339A CN107573066B CN 107573066 B CN107573066 B CN 107573066B CN 201710963339 A CN201710963339 A CN 201710963339A CN 107573066 B CN107573066 B CN 107573066B
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- 239000000919 ceramic Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title abstract description 14
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000011787 zinc oxide Substances 0.000 claims abstract description 29
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 229910000480 nickel oxide Inorganic materials 0.000 claims abstract description 16
- 229910000410 antimony oxide Inorganic materials 0.000 claims abstract description 15
- 239000011230 binding agent Substances 0.000 claims abstract description 15
- 229910000416 bismuth oxide Inorganic materials 0.000 claims abstract description 15
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims abstract description 15
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 claims abstract description 15
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims abstract description 15
- GEYXPJBPASPPLI-UHFFFAOYSA-N manganese(III) oxide Inorganic materials O=[Mn]O[Mn]=O GEYXPJBPASPPLI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000010304 firing Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 239000011812 mixed powder Substances 0.000 claims description 6
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 238000000748 compression moulding Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- 229920001353 Dextrin Polymers 0.000 claims description 3
- 239000004375 Dextrin Substances 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- 235000019425 dextrin Nutrition 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 229920001131 Pulp (paper) Polymers 0.000 claims description 2
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 229910002076 stabilized zirconia Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 14
- 230000035939 shock Effects 0.000 description 9
- 238000005245 sintering Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 5
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L manganese oxide Inorganic materials [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- PPNAOCWZXJOHFK-UHFFFAOYSA-N manganese(2+);oxygen(2-) Chemical compound [O-2].[Mn+2] PPNAOCWZXJOHFK-UHFFFAOYSA-N 0.000 description 1
- VASIZKWUTCETSD-UHFFFAOYSA-N manganese(II) oxide Inorganic materials [Mn]=O VASIZKWUTCETSD-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Compositions Of Oxide Ceramics (AREA)
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Abstract
The invention relates to a ceramic load bearing board which comprises the following raw materials in parts by weight: 90-98 parts of yttria-stabilized zirconia, 1-5 parts of zinc oxide, 0.8-3 parts of bismuth oxide, 0.1-0.6 part of antimony oxide, 0.05-0.1 part of nickel oxide and 0.03-0.06 part of manganous manganic oxide. The preparation method of the ceramic setter plate comprises the steps of mixing materials, adding a binder, baking, granulating, molding, drying, firing and the like. The ceramic burning board has the advantages of high strength, high temperature resistance, corrosion resistance, long service life, convenient use, simple preparation and the like, and is particularly suitable for bearing and firing zinc oxide piezoresistors.
Description
Technical Field
The invention relates to the technical field of ceramic materials, in particular to a ceramic load bearing plate and a preparation method thereof.
Background
The burning bearing plate is a functional ceramic, is a carrier of electronic components in the sintering process, and directly influences the quality, yield, energy consumption, cost and the like of the burnt products due to the quality and performance of the burning bearing plate. The main performance requirements of the qualified setter plate to be achieved are as follows: the electronic element is not deformed and cracked during high-temperature sintering, and has stable chemical properties and good thermal shock resistance.
The burning bearing plate used when the zinc oxide varistor product is burned in the current industry mainly has two types: one is a burning bearing plate pressed by zinc oxide varistor waste, and the burning bearing plate has low strength, poor cold and heat circulation resistance, easy deformation and cracking and short service life; the other is a common zirconia setter plate with coarse zirconia powder or waste zinc oxide powder spread on the surface, although the setter plate can ensure various performances of a zinc oxide varistor product, the coarse zirconia powder or waste zinc oxide powder needs to be spread manually during each use, the operation is time-consuming and labor-consuming, and the amount of spread coarse zirconia powder or waste zinc oxide powder is difficult to determine and control, so that the labor and materials are wasted, and the production cost is high.
Therefore, there is a need to develop a ceramic setter plate which has high strength, high temperature resistance, long service life, and convenient use, and is suitable for bearing fired zinc oxide piezoresistors.
Disclosure of Invention
Based on the above, the invention aims to provide a ceramic setter plate which has the advantages of high strength, high temperature resistance, corrosion resistance, long service life, convenience in use, simplicity in preparation and the like.
The technical scheme adopted by the invention is as follows:
a ceramic setter plate comprises the following raw materials in parts by weight:
90-98 parts of yttria-stabilized zirconia, 1-5 parts of zinc oxide, 0.8-3 parts of bismuth oxide, 0.1-0.6 part of antimony oxide, 0.05-0.1 part of nickel oxide and 0.03-0.06 part of manganous manganic oxide.
The yttria-stabilized zirconia (YSZ) is a ceramic material prepared by adding stabilizing agent yttria into zirconia, has the characteristics of high hardness, low chemical activity and capability of keeping stable performance at high temperature, and can endow the setter plate with excellent performances of high strength, high temperature resistance and corrosion resistance as a main material of the setter plate; zinc oxide (ZnO) and bismuth oxide (Bi)2O3) Antimony oxide (Sb)2O3) Nickel oxide (NiO) and manganomanganic oxide (Mn)3O4) The additive is matched with the main material, so that the thermal expansion coefficient of the system can be adjusted to approach to an electronic element sintered body, the thermal shock resistance of the setter plate is further improved, the possibility of deformation or cracking of the plate surface during use is reduced, and the service life of the setter plate is prolonged.
When the common zirconia burning bearing plate is directly used for bearing and burning the zinc oxide piezoresistor, partial low-melting matters always adhere to the surface of the burning bearing plate, and due to the difference of the thermal expansion coefficients of the two, the surface of the burning bearing plate can generate warping deformation under the action of thermal stress in the cooling process, and when the thermal stress is greater than the strength limit of the burning bearing plate, the cracking phenomenon can occur.
The invention particularly selects zinc oxide as a main additive, bismuth oxide, antimony oxide, nickel oxide and manganous-manganic oxide as auxiliary additives, the zinc oxide is a main material of the zinc oxide piezoresistor, and the bismuth oxide, the antimony oxide, the nickel oxide and the manganous-manganic oxide are commonly used modified materials in the zinc oxide piezoresistor. According to the invention, through the compound design of a small amount of additive and the main material of yttria-stabilized zirconia, the overall thermal expansion coefficient of the setter plate is close to that of a zinc oxide varistor product, and the generation of thermal stress in the sintering process of the zinc oxide varistor is avoided, so that the problems of deformation and cracking of the setter plate when the setter plate directly bears and fires the zinc oxide varistor product are solved, and the durability of the setter plate is improved. Therefore, the ceramic burning bearing plate is particularly suitable for bearing and burning zinc oxide piezoresistors, is suitable for zinc oxide piezoresistor products produced by different manufacturers, has strong universality, and can reduce the production cost of the zinc oxide piezoresistor products on the premise of ensuring that all performance indexes of the zinc oxide piezoresistor products are qualified.
Compared with the existing setter plate, the ceramic setter plate has the advantages of high strength, high temperature resistance, difficult deformation or cracking, corrosion resistance, long service life, convenience in use and simplicity in preparation.
Further, the mole percentage of the yttria in the yttria-stabilized zirconia is 3-10%. The yttrium oxide is a stabilizer of the zirconia ceramic material, and the content of the yttrium oxide is limited within a proper range, so that the volume expansion change rate of the ceramic setter plate during temperature rising or temperature lowering can be controlled, the stabilizing effect of the yttrium oxide stabilizer is exerted, and the performance stability of the ceramic setter plate is improved.
Further, the yttria-stabilized zirconia has a particle size composition of: calculated by mass percentage, 15-50 meshes account for 12-18%, 50-300 meshes account for 33-39%, and more than 325 meshes account for 47-54%. The yttria-stabilized zirconia is prepared by mixing coarse powder, medium powder and fine powder, and the blank prepared by the particle size distribution has good fluidity and is favorable for being filled in a cavity of a die during compression molding, so that the molded green body has uniform texture, and the fired setter plate has uniform and stable performance.
The composite material is further prepared by adding a binder into the raw materials and then firing, wherein the addition amount of the binder is 5-10% of the total mass of the raw materials.
Further, the binder is a solution prepared by using one or more of polyvinyl alcohol, carboxymethyl cellulose, dextrin and paper pulp as a solute and using one or two of water and ethanol as a solvent, wherein the mass percent of the solute is 15-25%.
Further, the feed comprises the following raw materials in parts by weight: 96 parts of yttria-stabilized zirconia, 2 parts of zinc oxide, 1.7 parts of bismuth oxide, 0.2 part of antimony oxide, 0.07 part of nickel oxide and 0.03 part of manganous manganic oxide; the particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percent, 15-50 meshes account for 13%, 50-300 meshes account for 33%, and more than 325 meshes account for 54%.
Further, the feed comprises the following raw materials in parts by weight: 94 parts of yttria-stabilized zirconia, 4 parts of zinc oxide, 1.5 parts of bismuth oxide, 0.4 part of antimony oxide, 0.06 part of nickel oxide and 0.04 part of manganous manganic oxide; the particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percent, 15-50 meshes account for 12 percent, 50-300 meshes account for 39 percent, and more than 325 meshes account for 49 percent.
Further, the feed comprises the following raw materials in parts by weight: the composite material comprises the following raw materials in parts by mass: 97 parts of yttria-stabilized zirconia, 1 part of zinc oxide, 1.4 parts of bismuth oxide, 0.5 part of antimony oxide, 0.05 part of nickel oxide and 0.05 part of manganous manganic oxide; the particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percent, 15-50 meshes account for 18 percent, 50-300 meshes account for 35 percent, and more than 325 meshes account for 47 percent.
The invention also provides a preparation method of the ceramic setter plate, which comprises the following steps:
(1) putting the raw material powder into a mixer according to the proportion and uniformly mixing;
(2) adding a binder into the mixed powder obtained in the step (1) according to the proportion and uniformly mixing;
(3) putting the mixed powder obtained in the step (2) into an oven for baking, and then granulating;
(4) weighing the powder granulated in the step (3), and then putting the powder into a die for compression molding;
(5) naturally drying the blank formed in the step (4) in a room temperature environment;
(6) and (5) feeding the dried green body obtained in the step (5) into a tunnel kiln to be fired into a ceramic setter plate.
The preparation method provided by the invention has the advantages of simple process steps, easy realization and control of preparation conditions and low preparation cost.
Further, in the step (3), the drying temperature is 60-90 ℃, and the drying time is 20-30 minutes; in the step (6), the firing temperature is 1520-1600 ℃, and the heat preservation time is 3-5 hours.
The drying temperature in the step (3) is too low, the time is too short, the effect of removing excessive moisture is difficult to achieve, the production efficiency is not favorably improved, and the bonding performance of the adhesive is damaged when the drying temperature is too high and the time is too long.
And (3) if the firing temperature in the step (6) is too low and the time is too short, the sintering degree of the setter plate can not reach a proper sintering degree, the strength of the setter plate can be seriously reduced, and if the firing temperature is too high and the time is too long, the sintering degree of the setter plate can be excessively increased, and the thermal shock resistance of the setter plate can be seriously reduced.
Detailed Description
Example one
The ceramic setter plate of the embodiment comprises the following raw materials in parts by mass: 96 parts of yttria-stabilized zirconia with the yttria content of 3-10 mol%, 2 parts of zinc oxide, 1.7 parts of bismuth oxide, 0.2 part of antimony oxide, 0.07 part of nickel oxide and 0.03 part of mangano-manganic oxide.
The particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percent, 15-50 meshes account for 13%, 50-300 meshes account for 33%, and more than 325 meshes account for 54%.
The adhesive adopted by the ceramic setter plate is a polyvinyl alcohol aqueous solution with the mass concentration of 25%. The addition amount of the binder is 5% of the total mass of the raw materials.
The preparation method of the ceramic setter plate comprises the following steps:
(1) all the raw material powders are put into a mixer according to the proportion and mixed evenly.
(2) And (3) adding the binder into the mixed powder obtained in the step (1) according to the proportion and uniformly mixing.
(3) And (3) putting the mixed powder obtained in the step (2) into an oven for baking at the temperature of 60-90 ℃ for 20-30 minutes, and then granulating.
(4) And (4) weighing the powder granulated in the step (3), and then putting the powder into a die for compression molding, wherein the pressure for compression molding is 100-150 Mpa.
(5) And (5) naturally drying the blank formed in the step (4) in a room temperature environment for 1-2 days.
(6) And (4) feeding the blank dried in the step (5) into a tunnel kiln, firing at the temperature of 1520-1600 ℃, and preserving heat for 3-5 hours to obtain the ceramic setter plate.
Through performance tests, the apparent porosity of the ceramic setter plate is 13%, the breaking strength is 35.7Mpa, and the thermal shock resistance is 37 times according to the thermal shock resistance test method of GB/T30873-.
Example two
The ceramic setter plate of the embodiment comprises the following raw materials in parts by mass: 94 parts of yttria-stabilized zirconia with the yttria content of 3-10 mol%, 4 parts of zinc oxide, 1.5 parts of bismuth oxide, 0.4 part of antimony oxide, 0.06 part of nickel oxide and 0.04 part of manganous manganic oxide.
The particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percent, 15-50 meshes account for 12 percent, 50-300 meshes account for 39 percent, more than 325 meshes account for 49 percent, wherein the molar percentage of yttrium oxide is 3-10 percent.
The ceramic setter plate adopts a binder which is a carboxymethyl cellulose aqueous solution with the mass concentration of 20%. The addition amount of the binder is 6% of the total mass of the raw materials.
The preparation method of the ceramic setter plate of this embodiment is the same as that of the first embodiment.
Through performance tests, the apparent porosity of the ceramic setter plate is 15%, the breaking strength is 39.6Mpa, and the thermal shock resistance is 43 times according to the thermal shock resistance test method of GB/T30873-.
EXAMPLE III
The ceramic setter plate of the embodiment comprises the following raw materials in parts by mass: 97 parts of yttria-stabilized zirconia with the yttria content of 3-10 mol%, 1 part of zinc oxide, 1.4 parts of bismuth oxide, 0.5 part of antimony oxide, 0.05 part of nickel oxide and 0.05 part of manganic manganous oxide.
The particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percent, 15-50 meshes account for 18 percent, 50-300 meshes account for 35 percent, and more than 325 meshes account for 47 percent.
The ceramic setter plate adopts a dextrin water solution with the mass concentration of 15% as a binder. The addition amount of the binder was 7% of the total mass of the raw materials.
The preparation method of the ceramic setter plate of this embodiment is the same as that of the first embodiment.
Through performance tests, the apparent porosity of the ceramic setter plate of the embodiment is 12%, the breaking strength is 30.3Mpa, and the thermal shock resistance is 40 times according to the thermal shock resistance test method of GB/T30873-.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. A ceramic setter plate is characterized in that: the composite material comprises the following raw materials in parts by mass:
90-98 parts of yttria-stabilized zirconia, 1-5 parts of zinc oxide, 0.8-3 parts of bismuth oxide, 0.1-0.6 part of antimony oxide, 0.05-0.1 part of nickel oxide and 0.03-0.06 part of manganous manganic oxide;
the particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percentage, 15-50 meshes account for 12-18%, 50-300 meshes account for 33-39%, and more than 325 meshes account for 47-54%.
2. The ceramic setter plate of claim 1, wherein: the molar percentage of yttrium oxide in the yttrium oxide stabilized zirconia is 3-10%.
3. The ceramic setter plate of claim 1 or 2, wherein: the composite material is prepared by adding a binder into raw materials and then firing, wherein the addition amount of the binder is 5-10% of the total mass of the raw materials.
4. The ceramic setter plate of claim 3, wherein: the binder is a solution prepared by using one or more of polyvinyl alcohol, carboxymethyl cellulose, dextrin and paper pulp as a solute and using one or two of water and ethanol as a solvent, wherein the mass percent of the solute is 15-25%.
5. The ceramic setter plate of claim 3, wherein: the feed comprises the following raw materials in parts by weight: 96 parts of yttria-stabilized zirconia, 2 parts of zinc oxide, 1.7 parts of bismuth oxide, 0.2 part of antimony oxide, 0.07 part of nickel oxide and 0.03 part of manganous manganic oxide; the particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percent, 15-50 meshes account for 13%, 50-300 meshes account for 33%, and more than 325 meshes account for 54%.
6. The ceramic setter plate of claim 3, wherein: the feed comprises the following raw materials in parts by weight: 94 parts of yttria-stabilized zirconia, 4 parts of zinc oxide, 1.5 parts of bismuth oxide, 0.4 part of antimony oxide, 0.06 part of nickel oxide and 0.04 part of manganous manganic oxide; the particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percent, 15-50 meshes account for 12 percent, 50-300 meshes account for 39 percent, and more than 325 meshes account for 49 percent.
7. The ceramic setter plate of claim 3, wherein: the feed comprises the following raw materials in parts by weight: the composite material comprises the following raw materials in parts by mass: 97 parts of yttria-stabilized zirconia, 1 part of zinc oxide, 1.4 parts of bismuth oxide, 0.5 part of antimony oxide, 0.05 part of nickel oxide and 0.05 part of manganous manganic oxide; the particle size composition of the yttria-stabilized zirconia is as follows: calculated by mass percent, 15-50 meshes account for 18 percent, 50-300 meshes account for 35 percent, and more than 325 meshes account for 47 percent.
8. The method for producing a ceramic setter plate as set forth in any one of claims 3 to 7, wherein: the method comprises the following steps:
(1) putting the raw material powder into a mixer according to the proportion and uniformly mixing;
(2) adding a binder into the mixed powder obtained in the step (1) according to the proportion and uniformly mixing;
(3) putting the mixed powder obtained in the step (2) into an oven for baking, and then granulating;
(4) weighing the powder granulated in the step (3), and then putting the powder into a die for compression molding;
(5) naturally drying the blank formed in the step (4) in a room temperature environment;
(6) and (5) feeding the dried green body obtained in the step (5) into a tunnel kiln to be fired into a ceramic setter plate.
9. The method for producing a ceramic setter plate as set forth in claim 8, wherein: in the step (3), the drying temperature is 60-90 ℃, and the drying time is 20-30 minutes; in the step (6), the firing temperature is 1520-1600 ℃, and the heat preservation time is 3-5 hours.
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| CN108975902B (en) * | 2018-08-10 | 2021-04-23 | 辰硕电子(九江)有限公司 | Ingredients and manufacturing method of sagger special for high-performance zinc oxide piezoresistor |
| CN110922199B (en) * | 2019-12-31 | 2022-05-20 | 湖南仁海科技材料发展有限公司 | Burning bearing plate for black zirconia ceramic burning and preparation method thereof |
| CN111087240A (en) * | 2019-12-31 | 2020-05-01 | 广东羚光新材料股份有限公司 | Ceramic load bearing plate and preparation method and application thereof |
| CN113999001B (en) * | 2021-11-16 | 2022-10-04 | 广东羚光新材料股份有限公司 | Burning bearing plate and preparation method and application thereof |
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Denomination of invention: A ceramic firing plate and its preparation method Effective date of registration: 20231020 Granted publication date: 20200804 Pledgee: Bank of China Limited Zhaoqing branch Pledgor: GUANGDONG LINGGUANG NEW MATERIAL Co.,Ltd. Registration number: Y2023980061931 |
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