Ceramic piece and manufacturing method thereof

Abstract

The invention relates to the technical field of ceramic parts, in particular to a ceramic part and a manufacturing method thereof. The ceramic part is prepared from, by weight, 60-80 parts of aluminum oxide powder, 40-60 parts of zirconium oxide powder, 20-40 parts of filler, 6-10 parts of powder, 4-6 parts of polyvinyl alcohol, 2-4 parts of zinc stearate and 1-2 parts of cerium oxide powder. According to the invention, in the high-temperature sintering process, the soybean fibrin and hydroxymethyl cellulose are thermally decomposed, and in the initial heating process, all the materials can be stably combined, the shrinkage rate in the sintering process is reduced, and the stability of the whole structure is improved; hexagonal boron nitride powder can play a good energy conduction supporting role in a material system, pores are filled through cooperation with addition of nano silicon dioxide, so that the structure of a ceramic part is more compact, meanwhile, through a composite phase generated through reaction of boric acid and dicyanodiamide, the sintering temperature can be reduced, excessive coarsening of crystal grains is avoided, and the service life of the ceramic part is prolonged. And the structural strength of the ceramic part is further guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic parts, in particular to a ceramic part and a manufacturing method thereof. Background Art

[0002] Ceramic parts are inorganic non-metallic products made by molding and high-temperature sintering. They have the characteristics of high temperature resistance, corrosion resistance, high hardness, and good insulation. They are widely used in industries such as industry, electronics, aerospace, etc.

[0003] In the prior art, during the preparation of ceramic parts, the basic powder materials have poor mutual bonding performance, which will lead to uneven distribution of components in the sintered product, affecting the strength performance of the ceramic parts. Based on this, the present invention provides a ceramic part and a method for manufacturing the same. Summary of the Invention

[0004] The object of the present invention is to provide a ceramic part and a method for manufacturing the same. The ceramic part prepared by the present invention not only has good compressive strength, but also has excellent bending strength, thereby effectively improving the performance of the ceramic part.

[0005] To achieve the above object, the present invention provides the following technical solutions: In a first aspect, the present invention provides a ceramic component comprising the following raw materials in parts by weight: 60 to 80 parts of aluminum oxide powder, 40 to 60 parts of zirconium oxide powder, 20 to 40 parts of filler, 6 to 10 parts of powder, 4 to 6 parts of polyvinyl alcohol, 2 to 4 parts of zinc stearate, and 1 to 2 parts of cerium oxide powder; The filler is prepared by the following method: S1: Preparation of a mixture, the raw materials of the mixture include hexagonal boron nitride powder, diallylamine, and γ-(2,3-epoxypropoxy)propyltrimethoxysilane; S2: Mixture processing, the mixture is further processed to obtain base material; S3: Preparation of auxiliary materials, the raw materials of the auxiliary materials include dicyandiamide, boric acid, nano-silica, and deionized water; S4: Mixing preparation: the base material and the auxiliary materials are mixed to obtain the filler.

[0006] Furthermore, the method for preparing the mixture is as follows: hexagonal boron nitride powder is fed into a tubular furnace, the tubular furnace is set to a heating rate of 6 to 8°C / min under a water vapor atmosphere, the temperature is raised to 800 to 900°C, and the temperature is kept for 2 to 4 hours. The obtained product is centrifuged, and the solid obtained by centrifugation is fed into an oven, and the oven is set to 80 to 100°C for drying for 2 to 4 hours to obtain a dry powder. The dry powder, diallylamine, and γ-(2,3-epoxypropoxy)propyltrimethoxysilane are fed into a reactor, the reactor temperature is set to 70 to 80°C, the stirring speed is 200 to 400 r / min, and the constant temperature stirring is performed for 3 to 5 hours. The obtained product is rotary evaporated to obtain a mixture.

[0007] Furthermore, the particle size of the hexagonal boron nitride powder is 6 to 8 μm, and the mass ratio of the dry powder, diallylamine, and γ-(2,3-epoxypropyloxy)propyltrimethoxysilane is 1: (0.06 to 0.08): (0.04 to 0.06).

[0008] Furthermore, the method for processing the mixture is as follows: the mixture, hydroxymethyl cellulose, and soy protein isolate are added to a mixer, the mixer is set to 400-600 r / min and stirred for 30-50 minutes, the resulting product is ball milled for 10-12 hours, and the mixture processing is completed to obtain the base material.

[0009] Furthermore, the mass ratio of the mixture, hydroxymethyl cellulose and soy protein isolate is 1: (0.2-0.4): (0.3-0.5).

[0010] Furthermore, the method for preparing the auxiliary material is as follows: dicyandiamide, boric acid, nano-silica, and deionized water are added to a reactor, the reactor temperature is set to 80-100°C, the stirring speed is 200-400 r / min, constant temperature stirring is performed for 10-20 minutes, the obtained product is centrifuged, and the solid obtained by centrifugation is sent to a tubular furnace. Under an ammonia atmosphere, the tubular furnace is set to a heating rate of 6-8°C / min, the temperature is raised to 1000-1200°C and kept warm for 1-2 hours to obtain the auxiliary material.

[0011] Furthermore, the mass ratio of dicyandiamide, boric acid, nano-silicon dioxide and deionized water is 1: (2-4): (3-5): (4-6).

[0012] Furthermore, the mixing preparation method is as follows: the base material and the auxiliary material are added to a mixer, the mixer is set to 600-800 r / min and stirred for 40-60 minutes, the resulting product is sent to an oven, the oven is set to 50-60°C and dried for 3-6 hours, the resulting product is spread on a tray with a thickness of 1-2 mm, the tray is sent to a plasma treatment instrument, the power is set to 150-200 W, the treatment time is 2-4 minutes, and argon is introduced during the treatment process to obtain the filler.

[0013] Furthermore, the powder is prepared by the following method: diatomaceous earth, sodium polyacrylate, ethoxylated carbamate, and agar are added to a mixer, the mixer is set to 200-400 r / min and stirred for 20-40 minutes, the resulting product is sent to an oven, the oven is set to 60-80° C. and dried for 3-6 hours, the resulting product is ground, and the ground particle size is ≤10 μm to obtain a powder.

[0014] In a second aspect, the present invention further provides a method for manufacturing a ceramic part, comprising the following steps: Alumina powder, zirconium oxide powder, filler, powder, polyvinyl alcohol, zinc stearate, and cerium oxide powder are weighed as needed and added to a mixer. The mixer is set to 600-800 r / min and stirred for 40-60 minutes. The resulting product is pressed into shape in a forming mold to obtain a green body. The green body is sintered at 1400-1500°C and kept warm for 2-4 hours to obtain a ceramic part.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, in the preparation of ceramic parts, by adding the mixed materials of the base material and the auxiliary material in the filler formula, soybean fiber protein and hydroxymethyl cellulose can play a role in strengthening the bonding during the initial mixing process, so that the mutual bonding of the materials is relatively stable. During the high-temperature sintering process, soybean fiber protein and hydroxymethyl cellulose will undergo thermal decomposition, and in the initial heating process, the materials can be firmly combined, the shrinkage rate during the sintering process is reduced, and the stability of the overall structure is improved. Hexagonal boron nitride powder can play a good energy conduction support role in the material system, and the addition of nano-silica is used to fill the pores, making the structure of the ceramic part more compact. At the same time, the composite phase generated by the reaction of boric acid and dicyandiamide can reduce the sintering temperature, avoid excessive coarsening of the grains, and further ensure the structural strength of the ceramic part.

[0016] 2. In the present invention, by adding powder, the porous structure of diatomaceous earth can absorb other component materials, ensuring uniform distribution of various materials and reducing stress concentration caused by particle agglomeration. Agar can be dissolved during the preparation of the powder to form a hydrogel network, temporarily fixing the position of the particles and improving the strength of the blank. Through the plasma treatment during the preparation of the filler, an etched structure can be generated on the surface of the material, thereby improving the interfacial bonding strength of the material and further ensuring the structural strength of the ceramic part. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention provides a formula diagram of a ceramic part and a manufacturing method thereof. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] It should be noted that the raw materials used in the following examples are all commercially available raw materials.

[0020] Example 1:

[0021] Raw materials preparation: 60 parts of aluminum oxide powder, 40 parts of zirconium oxide powder, 20 parts of filler, 6 parts of powder, 4 parts of polyvinyl alcohol, 2 parts of zinc stearate, 1 part of cerium oxide powder; Filler preparation: The filler is prepared by the following method: S1: Preparation of a mixture, the raw materials of the mixture include hexagonal boron nitride powder, diallylamine, and γ-(2,3-epoxypropoxy)propyltrimethoxysilane; The method for preparing the mixture is as follows: hexagonal boron nitride powder is fed into a tube furnace, the tube furnace is set to a heating rate of 6°C / min under a water vapor atmosphere, the temperature is raised to 800°C, and the temperature is kept for 2 hours. The obtained product is centrifuged, and the solid obtained by centrifugation is fed into an oven, and the oven is set at 80°C for drying for 2 hours to obtain a dry powder. The dry powder, diallylamine, and γ-(2,3-epoxypropyloxy)propyltrimethoxysilane are fed into a reactor, the reactor is set to a temperature of 70°C, the stirring speed is 200 r / min, and the mixture is stirred at a constant temperature for 3 hours. The obtained product is rotary evaporated to obtain a mixture, wherein the particle size of the hexagonal boron nitride powder is 6 μm, and the mass ratio of the dry powder, diallylamine, and γ-(2,3-epoxypropyloxy)propyltrimethoxysilane is 1:0.06:0.04; S2: Mixture processing, the mixture is further processed to obtain base material; The mixture processing method is as follows: the mixture, hydroxymethyl cellulose, and soy protein isolate are added to a mixer, the mixer is set to 400 r / min and stirred for 30 minutes, the resulting product is ball milled for 10 hours, and the mixture processing is completed to prepare a base material, wherein the mass ratio of the mixture, hydroxymethyl cellulose, and soy protein isolate is 1:0.2:0.3; S3: Preparation of auxiliary materials, the raw materials of the auxiliary materials include dicyandiamide, boric acid, nano-silica, and deionized water; The auxiliary material preparation method comprises the following steps: adding dicyandiamide, boric acid, nano-silica, and deionized water into a reactor, setting the reactor temperature at 80° C., stirring at a speed of 200 r / min, and stirring at constant temperature for 10 minutes. The obtained product is centrifuged, and the solid obtained by centrifugation is fed into a tube furnace. Under an ammonia atmosphere, the tube furnace is set to heat at a rate of 6° C. / min, and the temperature is raised to 1000° C. and maintained for 1 hour to prepare the auxiliary material, wherein the mass ratio of dicyandiamide, boric acid, nano-silica, and deionized water is 1:2:3:4; S4: Mixing preparation: mixing the base material and the auxiliary materials to prepare the filler; The mixing preparation method is as follows: the base material and the auxiliary material are added to a mixer, the mixer is set to 600 r / min and stirred for 40 minutes, the resulting product is sent to an oven, the oven is set to 50° C. and dried for 3 hours, the resulting product is spread on a tray with a thickness of 1 mm, the tray is sent to a plasma treatment instrument, the power is set to 150 W, the treatment time is 2 minutes, and argon gas is introduced during the treatment process to obtain a filler; The powder is prepared by the following method: diatomaceous earth, sodium polyacrylate, ethoxylated carbamate, and agar are added to a mixer, the mixer is set at 200 r / min and stirred for 20 minutes, the resulting product is sent to an oven, the oven is set at 60° C. and dried for 3 hours, and the resulting product is ground to a particle size of ≤10 μm to obtain a powder; Finished product preparation: Alumina powder, zirconium oxide powder, filler, powder, polyvinyl alcohol, zinc stearate, and cerium oxide powder are weighed as needed and added to a mixer. The mixer is set to 600 r / min and stirred for 40 minutes. The resulting product is pressed into a forming mold to obtain a green body. The green body is sintered at 1400°C and kept warm for 2 hours to obtain a ceramic part.

[0022] Embodiment 2:

[0023] Raw materials preparation: 70 parts of aluminum oxide powder, 50 parts of zirconium oxide powder, 30 parts of filler, 8 parts of powder, 5 parts of polyvinyl alcohol, 3 parts of zinc stearate, 1.5 parts of cerium oxide powder; Filler preparation: The filler is prepared by the following method: S1: Preparation of a mixture, the raw materials of the mixture include hexagonal boron nitride powder, diallylamine, and γ-(2,3-epoxypropoxy)propyltrimethoxysilane; The method for preparing the mixture is as follows: hexagonal boron nitride powder is fed into a tube furnace, the tube furnace is set to a heating rate of 7°C / min under a water vapor atmosphere, the temperature is raised to 850°C, and the temperature is kept for 3 hours. The obtained product is centrifuged, and the solid obtained by centrifugation is fed into an oven, and the oven is set at 90°C for drying for 3 hours to obtain a dry powder. The dry powder, diallylamine, and γ-(2,3-epoxypropyloxy)propyltrimethoxysilane are fed into a reactor, the reactor temperature is set at 75°C, the stirring speed is 300r / min, and the mixture is stirred at a constant temperature for 4 hours. The obtained product is rotary evaporated to obtain a mixture, wherein the particle size of the hexagonal boron nitride powder is 7μm, and the mass ratio of the dry powder, diallylamine, and γ-(2,3-epoxypropyloxy)propyltrimethoxysilane is 1:0.07:0.05; S2: Mixture processing, the mixture is further processed to obtain base material; The mixture processing method is as follows: the mixture, hydroxymethyl cellulose, and soy protein isolate are added to a mixer, the mixer is set to 500 r / min and stirred for 40 minutes, the resulting product is ball milled for 11 hours, and the mixture processing is completed to prepare a base material, wherein the mass ratio of the mixture, hydroxymethyl cellulose, and soy protein isolate is 1:0.3:0.4; S3: Preparation of auxiliary materials, the raw materials of the auxiliary materials include dicyandiamide, boric acid, nano-silica, and deionized water; The auxiliary material preparation method comprises the following steps: adding dicyandiamide, boric acid, nano-silica, and deionized water into a reactor, setting the reactor temperature at 90° C., stirring at a speed of 300 r / min, and stirring at constant temperature for 15 minutes. The obtained product is centrifuged, and the solid obtained by centrifugation is fed into a tube furnace. Under an ammonia atmosphere, the tube furnace is set to heat at a rate of 7° C. / min, and the temperature is raised to 1100° C. and maintained for 1.5 hours to prepare the auxiliary material, wherein the mass ratio of dicyandiamide, boric acid, nano-silica, and deionized water is 1:3:4:5; S4: Mixing preparation: mixing the base material and the auxiliary materials to prepare the filler; The mixing preparation method is as follows: the base material and the auxiliary material are added to a mixer, the mixer is set to 700 r / min and stirred for 50 minutes, the resulting product is sent to an oven, the oven is set to 55° C. and dried for 4.5 hours, the resulting product is spread on a tray with a thickness of 1.5 mm, the tray is sent to a plasma treatment instrument, the power is set to 170 W, the treatment time is 3 minutes, and argon gas is introduced during the treatment process to obtain a filler; The powder is prepared by the following method: diatomaceous earth, sodium polyacrylate, ethoxylated carbamate, and agar are added to a mixer, the mixer is set at 300 r / min and stirred for 30 minutes, the resulting product is sent to an oven, the oven is set at 70° C. and dried for 4.5 hours, and the resulting product is ground to a particle size of ≤10 μm to obtain a powder; Finished product preparation: Alumina powder, zirconium oxide powder, filler, powder, polyvinyl alcohol, zinc stearate, and cerium oxide powder are weighed as needed and added to a mixer. The mixer is set to 700 r / min and stirred for 50 minutes. The resulting product is pressed into a forming mold to obtain a green body. The green body is sintered at 1450°C and kept warm for 3 hours to obtain a ceramic part.

[0024] Example 3:

[0025] Raw materials preparation: 80 parts of aluminum oxide powder, 60 parts of zirconium oxide powder, 40 parts of filler, 10 parts of powder, 6 parts of polyvinyl alcohol, 4 parts of zinc stearate, 2 parts of cerium oxide powder; Filler preparation: The filler is prepared by the following method: S1: Preparation of a mixture, the raw materials of the mixture include hexagonal boron nitride powder, diallylamine, and γ-(2,3-epoxypropoxy)propyltrimethoxysilane; The method for preparing the mixture is as follows: hexagonal boron nitride powder is fed into a tube furnace, the tube furnace is set to a heating rate of 8°C / min under a water vapor atmosphere, the temperature is raised to 900°C, and the temperature is kept for 4 hours. The obtained product is centrifuged, and the solid obtained by centrifugation is fed into an oven, and the oven is set at 100°C for drying for 4 hours to obtain a dry powder. The dry powder, diallylamine, and γ-(2,3-epoxypropyloxy)propyltrimethoxysilane are fed into a reactor, the reactor temperature is set at 80°C, the stirring speed is 400 r / min, and the mixture is stirred at a constant temperature for 5 hours. The obtained product is rotary evaporated to obtain a mixture, wherein the particle size of the hexagonal boron nitride powder is 8 μm, and the mass ratio of the dry powder, diallylamine, and γ-(2,3-epoxypropyloxy)propyltrimethoxysilane is 1:0.08:0.06; S2: Mixture processing, the mixture is further processed to obtain base material; The mixture processing method is as follows: the mixture, hydroxymethyl cellulose, and soy protein isolate are added to a mixer, the mixer is set to 600 r / min and stirred for 50 minutes, the resulting product is ball milled for 12 hours, and the mixture processing is completed to prepare a base material, wherein the mass ratio of the mixture, hydroxymethyl cellulose, and soy protein isolate is 1:0.4:0.5; S3: Preparation of auxiliary materials, the raw materials of the auxiliary materials include dicyandiamide, boric acid, nano-silica, and deionized water; The auxiliary material preparation method comprises the following steps: adding dicyandiamide, boric acid, nano-silica, and deionized water into a reactor, setting the reactor temperature at 100° C., stirring at a speed of 400 r / min, and stirring at constant temperature for 20 minutes. The obtained product is centrifuged, and the solid obtained by centrifugation is fed into a tube furnace. Under an ammonia atmosphere, the tube furnace is set to heat at a rate of 8° C. / min, and the temperature is raised to 1200° C. and maintained for 2 hours to obtain the auxiliary material, wherein the mass ratio of dicyandiamide, boric acid, nano-silica, and deionized water is 1:4:5:6; S4: Mixing preparation: mixing the base material and the auxiliary materials to prepare the filler; The mixing preparation method is as follows: the base material and the auxiliary material are added to a mixer, the mixer is set to 800 r / min and stirred for 60 minutes, the resulting product is sent to an oven, the oven is set to 60° C. and dried for 6 hours, the resulting product is spread on a tray with a thickness of 2 mm, the tray is sent to a plasma treatment instrument, the power is set to 200 W, the treatment time is 4 minutes, and argon gas is introduced during the treatment process to obtain a filler; The powder is prepared by the following method: diatomaceous earth, sodium polyacrylate, ethoxylated carbamate, and agar are added to a mixer, the mixer is set at 400 r / min and stirred for 40 minutes, the resulting product is sent to an oven, the oven is set at 80° C. and dried for 6 hours, and the resulting product is ground to a particle size of ≤10 μm to obtain a powder; Finished product preparation: Alumina powder, zirconium oxide powder, filler, powder, polyvinyl alcohol, zinc stearate, and cerium oxide powder are weighed as needed and added to a mixer. The mixer is set to 800 r / min and stirred for 60 minutes. The resulting product is pressed into a forming mold to obtain a green body. The green body is sintered at 1500°C and kept warm for 4 hours to obtain a ceramic part.

[0026] Comparative Example 1: The difference between this comparative example and Example 1 is that this comparative example does not contain agar.

[0027] Comparative Example 2: The difference between this comparative example and Example 1 is that no plasma treatment is performed in this comparative example.

[0028] Comparative Example 3: This comparative example differs from Example 1 in that this comparative example does not contain powder.

[0029] Comparative Example 4: This comparative example differs from Example 1 in that: this comparative example does not contain filler.

[0030] Performance test: The ceramic parts prepared in Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3 and Comparative Example 4 were subjected to performance tests, and the test data obtained are recorded in the following table:

[0031] In the performance test, the compressive strength performance test was performed on the ceramic parts prepared in Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3 and Comparative Example 4 using the test standard in GB / T3810.4; The testing standard in GB / T3810.3-2016 was used to perform a bending strength performance test on the ceramic parts prepared in Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3, and Comparative Example 4.

[0032] It can be seen that the compressive strength and flexural strength of the ceramic parts prepared in Comparative Examples 1, 2, 3 and 4 are lower than those in Examples 1, 2 and 3; this shows that: in the preparation of the ceramic parts, by adding the mixed materials of the base material and the auxiliary material in the filler formula, soy fiber protein and hydroxymethyl cellulose can play a role in strengthening the bonding during the initial mixing process, so that the mutual bonding of the materials is relatively stable, and the soy fiber protein and hydroxymethyl cellulose will undergo thermal decomposition during the high-temperature sintering process, while in the initial heating process, the materials can be firmly combined, the shrinkage rate during the sintering process is reduced, and the stability of the overall structure is improved. The hexagonal boron nitride powder can play a good energy conduction support role in the material system, and the pores are filled with the addition of nano-silica, so that the structure of the ceramic part is more compact. At the same time, the composite phase generated by the reaction of boric acid and dicyandiamide can reduce the sintering temperature, avoid excessive coarsening of the grains, and further ensure the structural strength of the ceramic part; Through the addition of powder, the porous structure of diatomaceous earth can absorb other component materials, ensuring the uniform distribution of various materials and reducing the stress concentration caused by particle agglomeration. Agar can be dissolved in the powder preparation process to form a hydrogel network, temporarily fixing the position of particles and improving the strength of the blank. Through the plasma treatment during the filler preparation process, an etched structure can be generated on the material surface, which can improve the interfacial bonding strength of the material and further ensure the structural strength of the ceramic parts.

[0033] By comparing and analyzing the relevant data in the table, it can be seen that the ceramic parts prepared by the present invention not only have good compressive strength, but also have excellent bending strength. This shows that the ceramic parts provided by the present invention have a broader market prospect and are more suitable for promotion.

[0034] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0035] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A ceramic part, characterized in that: The method comprises the following raw materials in parts by weight: 60 to 80 parts of aluminum oxide powder, 40 to 60 parts of zirconium oxide powder, 20 to 40 parts of filler, 6 to 10 parts of powder, 4 to 6 parts of polyvinyl alcohol, 2 to 4 parts of zinc stearate, and 1 to 2 parts of cerium oxide powder; The filler is prepared by the following method: S1: Preparation of a mixture, the raw materials of the mixture include hexagonal boron nitride powder, diallylamine, and γ-(2,3-epoxypropyl)propyltrimethoxysilane; S2: Mixture processing, the mixture is further processed to obtain base material; S3: Preparation of auxiliary materials, the raw materials of the auxiliary materials include dicyandiamide, boric acid, nano-silica, and deionized water; S4: Mixing preparation: the base material and the auxiliary materials are mixed to obtain the filler.

2. The ceramic piece according to claim 1, characterized in that The method for preparing the mixed material comprises: feeding hexagonal boron nitride powder into a tube furnace, setting the heating rate of the tube furnace at 6-8°C / min under a water vapor atmosphere to 800-900°C, keeping the temperature for 2-4 hours, centrifuging the obtained product, feeding the solid obtained by centrifugation into an oven, setting the oven at 80-100°C for drying for 2-4 hours to obtain a dry powder, feeding the dry powder, diallylamine, and γ-(2,3-epoxypropoxy)propyltrimethoxysilane into a reactor, setting the reactor temperature at 70-80°C, stirring at a speed of 200-400 r / min, and stirring at constant temperature for 3-5 hours, and then subjecting the obtained product to rotary evaporation to obtain a mixed material.

3. The ceramic piece according to claim 2, characterized in that The particle size of the hexagonal boron nitride powder is 6 to 8 μm, and the mass ratio of the dry powder, diallylamine, and γ-(2,3-epoxypropyloxy)propyltrimethoxysilane is 1: (0.06 to 0.08): (0.04 to 0.06).

4. The ceramic piece according to claim 1, wherein The method for processing the mixture is as follows: adding the mixture, hydroxymethyl cellulose and soy protein isolate into a mixer, setting the mixer at 400-600 r / min and stirring for 30-50 minutes, ball milling the obtained product for 10-12 hours, completing the mixture processing, and obtaining the base material.

5. The ceramic piece according to claim 4, characterized in that The mass ratio of the mixture, hydroxymethyl cellulose and soy protein isolate is 1: (0.2-0.4): (0.3-0.5).

6. The ceramic piece according to claim 1, characterized in that The auxiliary material preparation method comprises the following steps: adding dicyandiamide, boric acid, nano-silica and deionized water into a reaction kettle, setting the temperature of the reaction kettle to 80-100° C., stirring at a speed of 200-400 r / min, stirring at a constant temperature for 10-20 minutes, centrifuging the obtained product, and feeding the solid obtained by centrifugation into a tubular furnace. In an ammonia atmosphere, the tubular furnace is set to heat at a rate of 6-8° C. / min, heating to 1000-1200° C. and maintaining the temperature for 1-2 hours to obtain the auxiliary material.

7. The ceramic piece according to claim 6, characterized in that The mass ratio of dicyandiamide, boric acid, nano-silicon dioxide and deionized water is 1: (2-4): (3-5): (4-6).

8. The ceramic piece according to claim 1, wherein The mixing preparation method comprises the following steps: adding a base material and an auxiliary material into a mixer, setting the mixer at 600-800 r / min and stirring for 40-60 minutes, sending the obtained product into an oven, setting the oven at 50-60° C. and drying for 3-6 hours, spreading the obtained product on a tray with a thickness of 1-2 mm, sending the tray into a plasma treatment instrument, setting the power at 150-200 W, and treating for 2-4 minutes, introducing argon gas during the treatment process, and thus obtaining the filler.

9. The ceramic piece according to claim 1, characterized in that The powder is prepared by the following method: diatomaceous earth, sodium polyacrylate, ethoxylated carbamate, and agar are added to a mixer, the mixer is set at 200-400 r / min and stirred for 20-40 minutes, the obtained product is sent to an oven, the oven is set at 60-80° C. and dried for 3-6 hours, and the obtained product is ground to a particle size of ≤10 μm to obtain a powder.

10. A method for manufacturing a ceramic part according to any one of claims 1 to 9, characterized in that: The following steps are involved: Alumina powder, zirconium oxide powder, filler, powder, polyvinyl alcohol, zinc stearate, and cerium oxide powder are weighed as needed and added to a mixer. The mixer is set to 600-800 r / min and stirred for 40-60 minutes. The resulting product is pressed into shape in a forming mold to obtain a green body. The green body is sintered at 1400-1500°C and kept warm for 2-4 hours to obtain a ceramic part.

Images