Modified auxiliary ceramic powder, preparation method thereof, ceramic slurry and application

Abstract

The application belongs to the technical field of photocuring printing, and particularly relates to a modified auxiliary ceramic powder, a preparation method thereof, a ceramic slurry and application. The preparation method of the modified auxiliary ceramic powder provided by the application adopts an aluminum salt sol of a specific composition to coat the auxiliary ceramic powder, can significantly reduce the absorbance, is applied to photocuring 3D printing forming of a ceramic wedge, reduces the purple light absorption of the high-absorbance powder, so that more purple light energy is absorbed by the photosensitive resin, promotes the curing of the ceramic slurry, and improves the curing depth of the green body. Through the modification treatment, the high ultraviolet light absorption rate of the auxiliary ceramic powder is improved, the curing width of the ceramic slurry is reduced, and the forming precision of the ceramic wedge is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photocuring printing, and particularly relates to a modified auxiliary ceramic powder, a preparation method thereof, a ceramic slurry and application. BACKGROUND

[0002] The ceramic wedge knife is a wire bonding tool used for semiconductor packaging, and plays an extremely important role in electrical interconnection and information intercommunication, and is widely applied to high-precision technical fields such as wire bonding and chip packaging.

[0003] The traditional forming method for preparing the ceramic wedge knife is injection molding technology, but the engineering preparation is limited due to high precision and complex structure forming. In recent years, with the rapid development of 3D printing technology, the photocuring 3D printing process is widely applied to the fields of medical devices, aerospace, metallurgical casting and the like due to high precision and high surface smoothness, and is expected to be used for the preparation of the ceramic wedge knife.

[0004] The ceramic wedge knife is usually made of high-strength alumina and zirconia as main materials, and the reinforcing phase is mainly high-absorbance chromium oxide, erbium oxide, silicon nitride, silicon carbide, tungsten carbide and the like, and the sintering aid is also high-absorbance titanium oxide, magnesium oxide, zinc oxide, yttrium oxide and the like. The use of high-absorbance materials will affect the solidification performance of the ceramic slurry, and finally affect the mechanical properties of the ceramic wedge knife after sintering. Therefore, there is little research on the photocuring 3D printing forming of the ceramic wedge knife containing the high-absorbance auxiliary ceramic powder.

[0005] Compared with the photocuring printing of pure alumina and zirconia ceramics, the photocuring printing of the auxiliary ceramic powder with high absorbance mainly has the following problems: (1) the auxiliary ceramic powder has high absorption to the 405nm violet light, and the absorption will increase with the increase of the content of the reinforcing phase, which greatly affects the solidification forming of the ceramic green body; (2) the auxiliary ceramic powder usually has a higher refractive index than ordinary ceramic powders (such as alumina and zirconia) to the violet light, which is easy to increase the solidification width of the ceramic, and affects the precision of the ceramic wedge knife; (3) the reinforcing phase usually needs a higher sintering temperature to promote the sintering process, but the high temperature is easy to cause the volatilization of the reinforcing phase, and a large number of pores are generated on the surface of the ceramic, which is not conducive to the sintering densification of the ceramic wedge knife, and thus reduces the mechanical properties of the ceramic wedge knife. SUMMARY

[0006] Therefore, the technical problem to be solved by the present application is to overcome the above-mentioned defects of the ceramic slurry containing high-absorbance raw materials in the process of 3D printing the ceramic wedge knife, so as to provide a modified auxiliary ceramic powder, a preparation method thereof, a ceramic slurry and application.

[0007] To this end, the present application provides the following technical solutions:

[0008] The application provides a preparation method of modified auxiliary ceramic powder, comprising the following steps:

[0009] S1, mixing aluminum salt, surfactant and hydrolysis inhibitor, adding alkaline precipitator to adjust the pH of the system to obtain aluminum salt sol;

[0010] S2, mixing auxiliary ceramic powder with the aluminum salt sol, aging, drying, grinding, calcining to obtain the modified auxiliary ceramic powder.

[0011] Optionally, in step S1, the mass ratio of aluminum salt, surfactant and hydrolysis inhibitor is 1:(1-2.5):(5-10);

[0012] And / or, the hydrolysis inhibitor is acid liquor with a molar concentration of 1x10 -5 -1x10 -3 mol / L;

[0013] Optionally, the acid liquor is at least one of aqueous acetic acid, aqueous oxalic acid, aqueous nitric acid and aqueous hydrochloric acid;

[0014] And / or, the alkaline precipitator comprises at least one of ammonia water, ammonium carbonate solution, urea solution and sodium hydroxide solution;

[0015] And / or, the molar concentration of the alkaline precipitator is 5.6x10 -6 -5.6x10 -4 mol / L;

[0016] And / or, the pH of the system is adjusted to 8-10, and the temperature of the system is controlled at 25-60 DEG C.

[0017] Optionally, in step S1, the aluminum salt comprises at least one of aluminum sulfate, aluminum nitrate and aluminum chloride;

[0018] And / or, the surfactant is at least one of sodium stearate, sodium dodecyl sulfate and dodecyl ethoxy sulfobetaine.

[0019] Optionally, in step S2, the mass ratio of auxiliary ceramic powder to aluminum salt sol is 1:(2-5);

[0020] And / or, the auxiliary ceramic powder comprises reinforcing phase powder, sintering aid and dispersant with a mass ratio of 1:(0.05-0.5):(3-5);

[0021] And / or, the mixing temperature of auxiliary ceramic powder and aluminum salt sol is 40-60 DEG C;

[0022] And / or, the particle size of auxiliary ceramic powder is 50-200 nm;

[0023] And / or, the aging time is 3 to 6 hours;

[0024] And / or, drying temperature 75–90℃;

[0025] And / or, grind to a powder particle size of less than 100 mesh;

[0026] And / or, the calcination temperature is 450–550℃, and the holding time is 1–2 hours.

[0027] Optionally, the reinforcing phase powder includes at least one of zirconium oxide, chromium oxide, praseodymium oxide, iron oxide, silicon carbide, silicon nitride, manganese oxide, aluminum nitride, cobalt oxide, copper oxide, and neodymium oxide;

[0028] And / or, the sintering aid includes at least one of titanium oxide, magnesium oxide, hafnium oxide, yttrium oxide, calcium oxide, zinc oxide, cerium oxide, and silicon oxide;

[0029] And / or, the dispersant includes at least one of anhydrous ethanol, isopropanol, and n-butanol.

[0030] The present invention also provides a modified auxiliary ceramic powder prepared by the above preparation method.

[0031] The present invention also provides a ceramic slurry comprising the above-mentioned modified auxiliary ceramic powder, matrix ceramic powder and photosensitive resin premix in a mass ratio of 1:(5-8):(2-4).

[0032] Optionally, the matrix ceramic powder is at least one of alumina and zirconium oxide;

[0033] And / or, the photosensitive resin premix contains oligomers, reactive diluents, plasticizers, dispersants, leveling agents, and photoinitiators;

[0034] In this invention, the specific selection of each component in the photosensitive resin premix is ​​conventional in the field, and typically non-limiting. The oligomer is at least one of bisphenol A epoxy acrylate resin, polyurethane acrylate resin, and polyester acrylate resin; the reactive diluent is at least one of N-vinylpyrrolidone, 2-(2-ethoxyethoxy)ethyl acrylate, 1,6-hexanediol diacrylate, and trimethylolpropane triacrylate; the plasticizer is at least one of castor oil, dibutyl phthalate, and dioctyl sebacate; and the dispersant is BYK153 and TEGO-760W. At least one of Gen 0851; the leveling agent is at least one of ethyl acrylate, silicone-modified polyacrylate, and polyvinylpyrrolidone; the initiator is at least one of 2-hydroxy-2-methyl-1-phenyl-1-propanone, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, and ethyl 2,4,6-trimethylbenzoylphenylphosphonate.

[0035] Optionally, the volume ratio of the oligomer, the active diluent, the plasticizer, the dispersant, the leveling agent, the photoinitiator is 8-10:4-6:4-6:6-8:1-2:0.5-1.

[0036] The application further provides application of the ceramic slurry in ceramic wedge 3D printing.

[0037] Optionally, the ceramic wedge 3D printing comprises the following steps: forming the ceramic wedge blank in three dimensions by using the 3D printing technology, and obtaining the ceramic wedge product through cleaning, secondary solidification, drying, degassing and sintering.

[0038] In the application, the operations of preparing the ceramic wedge by the 3D printing technology are all conventional in the field. For example, the 3D printing technology can adopt the DLP light-curing printing technology to form the ceramic wedge blank in three dimensions. The thickness of the wedge model slice layer is 25-50 μm.

[0039] The specific parameters of the steps such as cleaning, secondary solidification, drying, degassing and sintering are also conventional in the field. For example, at least one of anhydrous ethanol, isopropyl alcohol and butanone is used in the cleaning process; the secondary solidification power is 138-500 mW / cm 2 ; the solidification time is 30-120 s; the drying temperature is 70-100 ℃; the degassing environment is nitrogen atmosphere, the degassing temperature is 600-800 ℃, and the holding time is 5-10 h; the carbon removal and sintering environment is air atmosphere, the carbon removal temperature is 800-1000 ℃, the holding time is 3-5 h, the sintering temperature is 1550-1650 ℃, and the holding time is 5-10 h.

[0040] The degassing process is first carried out in the nitrogen atmosphere, and then carried out in the air atmosphere. The nitrogen atmosphere degassing heating rate is 0.05-1 ℃ / min, the air atmosphere carbon removal heating rate is 0.3-2 ℃ / min, and the sintering heating rate is 0.5-2.5 ℃ / min.

[0041] It should be noted that the nitrogen degassing process is to remove the hydrogen and oxygen elements in the organic matter contained in the ceramic blank, so as to achieve the purpose of slowly decomposing the organic matter; the carbon removal process is to remove the residual carbon elements after the decomposition of the organic matter in the ceramic blank, so as to completely remove the organic matter decomposition products.

[0042] The idea of the application is that: since the absorbance of the auxiliary ceramic powder in the components of the prepared ceramic wedge is high, the solidification depth of the prepared slurry is low, and it is difficult to be light-cured. The usual method is to increase the exposure energy or the content of the photoinitiator, but these methods will increase the solidification width while increasing the solidification depth, which will affect the forming precision of the wedge. The application modifies the auxiliary ceramic powder, reduces the absorbance of the ceramic powder, and improves the widening solidification depth of the ceramic slurry and the forming precision of the wedge.

[0043] The technical scheme of the present application has the following advantages:

[0044] The preparation method of the modified auxiliary ceramic powder provided by the present application adopts an aluminum salt sol of a specific composition to coat the auxiliary ceramic powder, and after calcination and oxidation, an alumina nanoceramic powder coating layer with low absorbance is formed on the surface of the auxiliary ceramic powder (the absorbance of alumina is 0.044, cited from the literature [Research Progress and Prospect of Non-Oxide Ceramic Photocuring Additive Manufacturing]), which can significantly reduce the absorbance, and when applied to the photocuring 3D printing forming of a ceramic wedge, the purple light absorption of high-absorbance powders (reinforcing phase and sintering aid, etc.) is reduced, so that more purple light energy is absorbed by the photosensitive resin, promoting the solidification of the ceramic slurry and improving the broadening solidification depth of the green body.

[0045] The ceramic slurry provided by the present application uses modified auxiliary ceramic powder containing a reinforcing phase and a sintering aid, and the surface of the auxiliary ceramic powder is coated with alumina nanopowder, which not only reduces the absorbance of the powder, but also reduces the volatilization of the reinforcing phase in the auxiliary ceramic powder, avoiding a large number of pores caused by the volatilization of the reinforcing phase and effectively improving the strength of the ceramic wedge. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the specific embodiments of the present application or the technical schemes in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0047] Figure 1 is the process flow chart of the photocuring 3D printing ceramic wedge in the embodiments of the present application. DETAILED DESCRIPTION

[0048] The following embodiments are provided to better further understand the present application and are not limited to the best embodiments, and do not limit the content and protection scope of the present application, and any person under the inspiration of the present application or the combination of the present application with other prior art features can obtain any product same or similar to the present application, which falls within the protection scope of the present application.

[0049] The specific experimental steps or conditions are not specified in the examples, and the operation or conditions can be performed according to the conventional experimental steps described in the literature in the art. The reagents or instruments used are not specified by the manufacturer, and are conventional reagent products that can be obtained by purchase.

[0050] Example 1

[0051] The present embodiment provides a photocured 3D printed ceramic chisel, and the specific preparation method and steps are as follows:

[0052] (1) Preparation of sol: aluminum chloride, dodecyl ethoxy sulfobetaine, and 1×10 -3 mol / L acetic acid solution were mixed in a mass ratio of 1:1:5. Under stirring conditions, 5.6×10 -4 mol / L ammonia solution was slowly added dropwise, the pH value of the system was adjusted to 9, the stirring temperature was 40℃, and the stirring was uniform, to obtain aluminum salt sol A;

[0053] (2) Preparation of auxiliary ceramic powder: the reinforcing phase powder (10% chromium oxide and 90% neodymium oxide), the sintering aid (20% magnesium oxide, 50% silicon oxide, and 30% calcium oxide), and anhydrous ethanol were weighed in a mass ratio of 1:0.05:5, mixed uniformly by ball milling at a speed of 400 r / min for 12 h, dried at a temperature of 75℃, ground and sieved through a 200 mesh sieve, to obtain auxiliary ceramic powder B;

[0054] (3) Preparation of modified coated powder: auxiliary ceramic powder B was slowly added to aluminum salt sol A, and the mass ratio of auxiliary ceramic powder B to aluminum salt sol A was 1:2, so that the aluminum salt sol was uniformly coated on the surface of auxiliary ceramic powder B. After stirring uniformly at a speed of 30 r / min and a temperature of 40℃, the aging time was 6 h, the drying temperature was 75℃, and the grinding was sieved through a 100 mesh sieve. The calcination temperature was 450℃, and the holding time was 1 h, to obtain aluminum salt coated modified auxiliary ceramic powder C;

[0055] (4) Three-dimensional printing forming. The coated modified auxiliary ceramic powder C, zirconia toughened alumina (20% zirconia, 80% alumina), and photosensitive resin premix liquid are prepared into a ceramic slurry in a mass ratio of 1:8:2, wherein the photosensitive resin premix liquid is composed of modified polyurethane acrylate (manufacturer Allnex type EBECRYL 8890), active diluent (mixed by 50% 1,6-hexanediol diacrylate and 50% trimethylolpropane triacrylate), castor oil, BYK153, polyvinylpyrrolidone (manufacturer Guangdong Meihua Chemical Co., Ltd. type k30), and 2,4,6-trimethylbenzoyl phenyl ethyl phosphonate in a volume ratio of 10:6:6:8:2:1, and DLP light curing printing technology is used for three-dimensional forming of the ceramic wedge blank, and the wedge model slice layer thickness is 50 μm.

[0056] (5) Blank post-processing. Isopropyl alcohol is used for cleaning the blank, the secondary curing power is 500 mW / cm 2 , the curing time is 120 s; the drying temperature is 70℃, the drying process is carried out in a vacuum drying oven, the holding time is 6 h, the degassing temperature is 800℃, the holding time is 3 h, the degassing process is carried out in a nitrogen atmosphere, and then the carbon removal process is carried out in an air atmosphere, wherein the nitrogen atmosphere degassing heating rate is 0.05℃ / min, the carbon removal heating rate is 0.3℃ / min, the temperature is raised to the sintering temperature of 1550℃ at a rate of 0.5℃ / min, and the holding time is 3 h, to obtain the ceramic wedge product.

[0057] Example 2

[0058] The embodiment provides a light-cured 3D printed ceramic wedge, which is compared with the embodiment 1, and the difference is only that the mass ratio of the reinforcing phase powder, the sintering aid, and the anhydrous ethanol in step (2) is 1:0.5:5.

[0059] Example 3

[0060] The embodiment provides a light-cured 3D printed ceramic wedge, which is compared with the embodiment 1, and the difference is only that the mass ratio of the modified auxiliary ceramic powder C, the zirconia toughened alumina, and the photosensitive resin premix liquid in step (4) is 1:7:3.

[0061] Example 4

[0062] The embodiment provides a light-cured 3D printed ceramic wedge, which is compared with the embodiment 1, and the difference is only that the mass ratio of the reinforcing phase powder, the sintering aid, and the anhydrous ethanol in step (2) is 1:0.25:4.

[0063] Example 5

[0064] The embodiment provides a photocured 3D printing ceramic cleaver, and only differs from the embodiment 1 in that the mass ratio of the aluminum salt, the surfactant and the hydrolysis inhibitor is 1:2.5:10 in step (1).

[0065] Embodiment 6

[0066] The embodiment provides a photocured 3D printing ceramic cleaver, and only differs from the embodiment 1 in that the mass ratio of the aluminum salt, the surfactant and the hydrolysis inhibitor is 1:1.5:8 in step (1).

[0067] Embodiment 7

[0068] The embodiment provides a photocured 3D printing ceramic cleaver, and only differs from the embodiment 1 in that the calcination temperature is 550 DEG C and the calcination time is 2h in step (1).

[0069] Embodiment 8

[0070] The embodiment provides a photocured 3D printing ceramic cleaver, and only differs from the embodiment 1 in that the mass ratio of the auxiliary ceramic powder B and the aluminum salt sol A is 1:5 in step (3).

[0071] Comparative example 1

[0072] The comparative example provides a photocured 3D printing ceramic cleaver, and only differs from the embodiment 1 in that the auxiliary ceramic powder is not subjected to the coating modification treatment.

[0073] Comparative example 2

[0074] The comparative example provides a photocured 3D printing ceramic cleaver, and only differs from the embodiment 1 in that the hydrolysis inhibitor is not included in step (1), and the same mass of water is used instead of the hydrolysis inhibitor.

[0075] Comparative example 3

[0076] The comparative example provides a photocured 3D printing ceramic cleaver, and only differs from the embodiment 1 in that the surfactant is not included in step (1), and the same mass of water is used instead of the surfactant.

[0077] Test example

[0078] The ceramic slurries and the ceramic cleavers provided by the embodiment and the comparative examples are subjected to performance testing, and the specific testing method is as follows:

[0079] Absorbance: the absorbance of the modified auxiliary ceramic powder is determined by using an ultraviolet-visible-near infrared spectrophotometer.

[0080] Ceramic slurry viscosity: the viscosity of the ceramic slurry is tested by using a rotary rheometer.

[0081] Relative density: GB / T 25995-2010 Fine Ceramic Density and Apparent Porosity Test Method.

[0082] Bending strength: According to GB / T 4741-1999 Ceramic Material Bending Strength Test Method, the bending strength of the material was tested by using a universal testing machine.

[0083] Hardness: According to GB / T 16534-2009 Fine Ceramic Room Temperature Hardness Test Method, the Vickers hardness of the material was tested by using a Vickers hardness tester.

[0084] Accuracy: The dimensional error of the 3D printed ceramic chopper blank relative to the chopper design model was measured by using an optical microscope after printing the ceramic chopper blank, and the difference was compared with the chopper design model size.

[0085] Table 1

[0086]

[0087] From the data in the above table, it can be seen that compared with Example 2 and Example 4, the addition of an appropriate amount of sintering aid can promote the sintering process and improve the mechanical properties of the ceramic, while too much sintering aid can reduce the mechanical properties of the ceramic. Compared with Example 3, it shows that high solid content can obtain suitable broadened solidification depth, reduce printing and sintering defects, and thus obtain better bending strength and hardness. Compared with Examples 5-6, it is easy to find that when the content of surfactant and hydrolysis inhibitor in the aluminum salt solution is 1:5, it can further promote the powder surface coating effect and improve the broadened solidification depth of the slurry. Compared with Example 7, the coated nano powder can maintain nano characteristics at a lower calcination temperature, thereby reducing the absorbance and promoting the sintering activity of the powder, and improving the relative density of the ceramic. Compared with Example 8, reducing the content of aluminum salt can avoid the reaction of excessive aluminum salt with alkaline solution to form agglomerated precipitates, thereby reducing the slurry viscosity and absorbance, and promoting the printing process of the ceramic blank.

[0088] Compared with Comparative Example 1, the absorbance of the modified ceramic powder is reduced by 48%, and the bending strength of the ceramic formed by printing the modified powder is increased by 1.45 times, and the hardness is increased by 1.39 times. Compared with Comparative Example 2, the use of hydrolysis inhibitor promotes the solution to be less likely to form agglomerated nanoparticle precipitates, and promotes the uniformity of the nano-powder layer during the coating process, thereby reducing the powder surface absorbance by 48.14%. Compared with Comparative Example 3, the addition of surfactant can promote the formation of a low-absorbance nano-powder coating layer on the surface of the precursor, which can effectively reduce the absorbance of the powder and improve the printing ceramic accuracy to 3 μm.

[0089] Obviously, the above embodiments are merely example for clearly illustrating but not limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and can not be enumerated. The obvious changes or variations derived from this still fall within the protection scope of the present application.

Claims

1. A method for producing a modified auxiliary ceramic powder, characterized by, Comprising the following steps: S1, mixing the aluminum salt, the surfactant and the hydrolysis inhibitor, adding the basic precipitator to adjust the pH of the system to obtain an aluminum salt sol; wherein the mass ratio of the aluminum salt, the surfactant and the hydrolysis inhibitor is 1: (1-2.5): (5-10); the hydrolysis inhibitor is an acid solution with a molar concentration of 1×10 -5 ~1×10 -3 mol / L; wherein the pH of the system is adjusted to 8-10, and the temperature of the system is controlled at 25-60℃; S2, mixing the auxiliary ceramic powder with aluminum salt sol, aging, drying, grinding, calcining to obtain the modified auxiliary ceramic powder; the mixing temperature of the auxiliary ceramic powder and the aluminum salt sol is 40-60℃; The mass ratio of the auxiliary ceramic powder and the aluminum salt sol is 1:(2-5); The auxiliary ceramic powder comprises reinforcing phase powder, sintering aid and dispersant in a mass ratio of 1:(0.05-0.5):(3-5).

2. The method of claim 1, wherein the modified auxiliary ceramic powder is prepared by the steps of: (a) mixing a ceramic powder and a dispersant to form a mixture; (b) adding a modifier to the mixture; (c) mixing the mixture; and (d) drying the mixture. In step S1, the acid solution is at least one of aqueous acetic acid, aqueous oxalic acid, aqueous nitric acid, and aqueous hydrochloric acid; And / or, the alkaline precipitant comprises at least one of ammonia, ammonium carbonate solution, urea solution, and sodium hydroxide solution; and / or the molar concentration of the basic precipitant is 5.6 x 10 -6 -5.6 x 10 -4 mol / L.

3. The method for preparing modified auxiliary ceramic powder according to claim 1, characterized in that, In step S1, the aluminum salt comprises at least one of aluminum sulfate, aluminum nitrate, and aluminum chloride; And / or, the surfactant is at least one of sodium stearate, sodium dodecyl sulfate, and dodecyl ethoxy sulfobetaine.

4. The method of producing a modified auxiliary ceramic powder according to any one of claims 1 to 3, characterized in that, In step S2, the particle size of the auxiliary ceramic powder is 50-200nm; And / or, the aging time is 3-6h; And / or, the drying temperature is 75-90℃; And / or, the grinding is to a powder particle size of less than 100 mesh; And / or, the calcining temperature is 450-550℃, and the holding time is 1-2h.

5. The method for preparing modified auxiliary ceramic powder according to claim 4, characterized in that, The reinforcing phase powder comprises at least one of zirconium oxide, chromium oxide, praseodymium oxide, iron oxide, silicon carbide, silicon nitride, manganese oxide, aluminum nitride, cobalt oxide, copper oxide, and neodymium oxide; And / or, the sintering aid comprises at least one of titanium oxide, magnesium oxide, hafnium oxide, yttrium oxide, calcium oxide, zinc oxide, cerium oxide, and silicon oxide; And / or, the dispersant comprises at least one of anhydrous ethanol, isopropyl alcohol, and n-butyl alcohol.

6. A modified auxiliary ceramic powder prepared by the preparation method of any one of claims 1-5.

7. A ceramic slurry, characterized by, A premixed solution of the modified auxiliary ceramic powder of claim 6, the base ceramic powder, and the photosensitive resin in a mass ratio of 1:(5-8):(2-4).

8. The ceramic slurry of claim 7, wherein, The base ceramic powder is at least one of aluminum oxide and zirconium oxide; And / or, the photosensitive resin premixed solution comprises oligomer, active diluent, plasticizer, dispersant, leveling agent, and photoinitiator.

9. The ceramic slurry of claim 8, wherein, The volume ratio of the oligomer, active diluent, plasticizer, dispersant, leveling agent, and photoinitiator is 8-10:4-6:4-6:6-8:1-2:0.5-1.

10. Use of the ceramic slurry of any one of claims 7-9 in 3D printing of ceramic cleaver.

11. Use according to claim 10, characterized in that, Comprising the following steps: three-dimensional molding of the ceramic slurry into a ceramic cleaver blank by 3D printing technology, washing, secondary curing, drying, degassing, and sintering to obtain a finished ceramic cleaver.

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