Electrode parts for single crystal hot zone apparatus and methods of making same

Abstract

The application provides a preparation method of an electrode part applied to a single crystal hot field device, which comprises the following steps: mixing cobalt powder, iron powder and carbon fiber particles to obtain a first mixed powder; mixing cobalt powder, copper powder, iron powder and carbon fiber particles to obtain a second mixed powder; filling the first mixed powder into a cavity of a mold, and making the volume of the first mixed powder account for 1 / 3-1 / 2 of the volume of the cavity; filling the second mixed powder into the cavity of the mold, and making the second mixed powder fill the cavity of the mold; performing die forming so that the first mixed powder and the second mixed powder jointly form an electrode green body; and sintering the electrode green body to obtain an electrode part. The electrode part has the excellent performance of both carbon / carbon composite material and cobalt-copper alloy material. The application further provides an electrode part prepared by the preparation method.

Description

Technical Field

[0001] This invention relates to the field of single-crystal thermal field equipment technology, and in particular to an electrode component for use in single-crystal thermal field equipment and its preparation method. Background Technology

[0002] Single-crystal thermal field equipment is used to produce single-crystal silicon materials. Currently, the electrode components in single-crystal thermal field equipment are mainly made of two materials: graphite and carbon / carbon composite materials.

[0003] Graphite, as a material for electrode components, has many drawbacks, such as low strength, high brittleness, and susceptibility to damage. Due to its low strength and brittleness, graphite can only be processed into very thick electrode components, significantly increasing costs. Furthermore, graphite thermal field products are prone to cracking under repeated high-temperature thermal shock conditions, leading to electrode component failure. Therefore, graphite is rarely used as a material for electrode components at present. Although carbon / carbon composite materials have many advantages, their performance still needs further improvement if used as a material for electrode components. Summary of the Invention

[0004] Therefore, it is necessary to provide a method for preparing electrode parts for use in single-crystal thermal field equipment, wherein the prepared electrode parts possess the excellent properties of both carbon / carbon composite materials and cobalt-copper alloy materials.

[0005] In addition, it is necessary to provide an electrode part prepared by the above-described preparation method.

[0006] At least one embodiment of the present invention provides a method for fabricating an electrode component for use in a single-crystal thermal field device, comprising the following steps:

[0007] Cobalt powder, iron powder and carbon fiber particles are mixed to obtain a first mixed powder;

[0008] Cobalt powder, copper powder, iron powder and carbon fiber particles are mixed to obtain a second mixed powder;

[0009] The first mixed powder is filled into the cavity of the mold, and the volume of the first mixed powder occupies 1 / 3 to 1 / 2 of the cavity volume;

[0010] The second mixed powder is filled into the cavity of the mold, and the cavity of the mold is completely filled with the second mixed powder;

[0011] The first mixed powder and the second mixed powder in the mold are compression molded to form an electrode green body together; and

[0012] The electrode green blank is sintered to obtain the electrode part.

[0013] In some embodiments, mixing cobalt powder, iron powder, and carbon fiber particles specifically includes the following steps:

[0014] The cobalt powder, the iron powder, the carbon fiber particles, the first adhesive, and the first lubricant are mixed.

[0015] In some embodiments, mixing the cobalt powder, the iron powder, the carbon fiber particles, the first adhesive, and the first lubricant specifically includes the following steps:

[0016] The cobalt powder, the iron powder, the carbon fiber particles, the first adhesive, and the first lubricant are mixed in a mass ratio of (12.5–15):(7.5–10):(7.5–10):(1–5):(1–5).

[0017] In some embodiments, the preparation method includes at least one of the following (1) to (2):

[0018] (1) The first adhesive comprises at least one of stearic acid, polypropylene and paraffin;

[0019] (2) The first lubricant includes at least one of graphite, engine oil and gasoline.

[0020] In some embodiments, mixing cobalt powder, copper powder, iron powder, and carbon fiber particles specifically includes the following steps:

[0021] The cobalt powder, copper powder, iron powder, carbon fiber particles, second adhesive, and second lubricant are mixed.

[0022] In some embodiments, mixing the cobalt powder, the copper powder, the iron powder, the carbon fiber particles, the second binder, and the second lubricant specifically includes the following steps:

[0023] The cobalt powder, copper powder, iron powder, carbon fiber particles, the second adhesive, and the second lubricant are mixed in a mass ratio of (12.5–15):(25–30):(7.5–10):(7.5–10):(1–5):(1–5).

[0024] In some embodiments, the preparation method includes at least one of the following (3) to (4):

[0025] (3) The second adhesive includes at least one of stearic acid, polypropylene and paraffin;

[0026] (4) The second lubricant includes at least one of graphite, engine oil and gasoline.

[0027] In some embodiments, the preparation method includes at least one of the following (5) to (6):

[0028] (5) The temperature for sintering the electrode green blank is 1085℃~1100℃;

[0029] (6) The sintering time for the electrode green blank is 10h to 20h.

[0030] In some embodiments, after sintering the electrode green body, the preparation method further includes the following steps:

[0031] The sintered electrode green blank is machined to obtain the electrode part.

[0032] In some embodiments, sintering the electrode green body specifically involves:

[0033] The electrode green blank is sintered under a protective gas environment.

[0034] In some embodiments, the preparation method includes at least one of the following (7) to (9):

[0035] (7) The particle size of the cobalt powder is 30μm to 60μm;

[0036] (8) The particle size of the copper powder is 30μm to 60μm;

[0037] (9) The particle size of the iron powder is 30μm to 60μm.

[0038] In some embodiments, the method for preparing the carbon fiber particles includes the following steps:

[0039] The carbon fiber was crushed to obtain initial carbon fiber particles; and

[0040] The initial carbon fiber particles are passed through a sieve to obtain the carbon fiber particles.

[0041] At least one embodiment of the present invention provides an electrode part prepared by the method described above for preparing electrode parts for use in single-crystal thermal field devices.

[0042] In some embodiments, the electrode component uses cobalt as a skeleton, copper as a matrix on the skeleton, iron as a carrier on the matrix, and carbon fiber particles as a carrier on the iron.

[0043] The electrode component preparation method provided by this invention is simple, and the prepared electrode component is easy to process, has low production cost, good chemical stability, strong wear resistance, long service life, high strength, good ablation resistance, good thermal shock resistance, high hardness, high temperature resistance, excellent electrical and thermal conductivity, and certain heat dissipation performance. The electrode component prepared by this invention is made of cobalt-copper alloy-carbon fiber composite material, and the prepared electrode component combines the excellent properties of carbon / carbon composite materials and cobalt-copper alloy materials. Attached Figure Description

[0044] Figure 1 This is a flowchart illustrating the fabrication process of electrode components for single-crystal thermal field equipment provided by the present invention. Detailed Implementation

[0045] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] Please see Figure 1 At least one embodiment of the present invention provides a method for preparing an electrode component for use in a single-crystal thermal field device, comprising the following steps:

[0048] Step S11: Crush the carbon fiber to obtain carbon fiber particles.

[0049] Specifically, the carbon fiber is crushed to obtain initial carbon fiber particles, and then the initial carbon fiber particles are passed through a sieve to obtain the carbon fiber particles.

[0050] In one embodiment, the sieve may be a 100-mesh sieve. The initial carbon fiber particles are passed through the sieve to select carbon fiber particles of a suitable particle size.

[0051] Step S12: Mix cobalt powder, iron powder and carbon fiber particles to obtain a first mixed powder.

[0052] Specifically, the cobalt powder, the iron powder, the carbon fiber particles, the first adhesive, and the first lubricant are mixed to obtain the first mixed powder.

[0053] More specifically, the cobalt powder, the iron powder, the carbon fiber particles, the first adhesive, and the first lubricant are mixed in a mass ratio of (12.5–15):(7.5–10):(7.5–10):(1–5):(1–5) to obtain the first mixed powder.

[0054] In one embodiment, the cobalt powder has a particle size of 30 μm.

[0055] In one embodiment, the iron powder has a particle size of 30 μm.

[0056] In one embodiment, the first adhesive includes at least one of stearic acid, polypropylene, and paraffin.

[0057] In one embodiment, the first lubricant includes at least one of graphite, engine oil, and gasoline.

[0058] Step S13: Mix cobalt powder, copper powder, iron powder and the carbon fiber particles to obtain a second mixed powder.

[0059] Specifically, the cobalt powder, copper powder, iron powder, carbon fiber particles, second binder, and second lubricant are mixed to obtain the second mixed powder.

[0060] More specifically, the cobalt powder, the copper powder, the iron powder, the carbon fiber particles, the second adhesive, and the second lubricant are mixed in a mass ratio of (12.5–15):(25–30):(7.5–10):(7.5–10):(1–5):(1–5) to obtain the second mixed powder.

[0061] In one embodiment, the cobalt powder has a particle size of 30 μm to 60 μm. Specifically, the particle size of the cobalt powder can be 30 μm, 40 μm, 50 μm, or 60 μm.

[0062] In one embodiment, the copper powder has a particle size of 30 μm to 60 μm. Specifically, the copper powder can have a particle size of 30 μm, 40 μm, 50 μm, or 60 μm.

[0063] In one embodiment, the particle size of the iron powder is 30 μm to 60 μm. Specifically, the particle size of the iron powder can be 30 μm, 40 μm, 50 μm, or 60 μm.

[0064] In one embodiment, the second adhesive includes at least one of stearic acid, polypropylene, and paraffin.

[0065] In one embodiment, the second lubricant includes at least one of graphite, engine oil, and gasoline.

[0066] Step S14: Fill the mold cavity with the first mixed powder, and make the volume of the first mixed powder occupy 1 / 3 to 1 / 2 of the cavity volume.

[0067] The end containing the first mixed powder will subsequently become the threaded end of the electrode component. That is, the first mixed powder will subsequently become the threaded end of the electrode component.

[0068] Step S15: Fill the cavity of the mold with the second mixed powder, and make the cavity of the mold completely filled with the second mixed powder.

[0069] It should be noted that filling the cavity of the mold means that the total volume of the first mixed powder and the second mixed powder is equal to the volume of the cavity in the mold. For example, when the volume of the first mixed powder accounts for 1 / 3 of the cavity volume, the volume of the second mixed powder accounts for 2 / 3 of the cavity volume; when the volume of the first mixed powder accounts for 1 / 2 of the cavity volume, the volume of the second mixed powder accounts for 1 / 2 of the cavity volume.

[0070] The end containing the second mixed powder will subsequently become the nut end of the electrode component. That is, the second mixed powder will become the nut end of the electrode component.

[0071] Step S16: The first mixed powder and the second mixed powder in the mold are molded to form an electrode green blank together.

[0072] In one embodiment, the molding pressure is 3.5T.

[0073] Step S17: Sinter the electrode green blank to obtain the electrode blank.

[0074] Specifically, the electrode blank is removed from the mold and then placed in a high-temperature reactor filled with protective gas at a temperature of 1085℃~1100℃ for sintering for 10h~20h, thereby obtaining the electrode blank.

[0075] During the sintering process of the electrode blank, the cobalt powder, iron powder and carbon fiber particles in the first mixed powder will be sintered into a block, and the cobalt powder, copper powder, iron powder and carbon fiber particles in the second mixed powder will also be sintered into a block. The copper powder in the second mixed powder melts due to high temperature, and the melted copper powder slowly seeps into the first mixed powder, that is, into the threaded end of the electrode part.

[0076] In one embodiment, the protective gas may be an inert gas or hydrogen. Specifically, the inert gas may be helium or argon, etc. Filling the high-temperature reactor with a protective gas is to prevent oxidation of the electrode blank.

[0077] In one embodiment, the high-temperature reactor may be an induction furnace.

[0078] Step S18: Machining the electrode blank to obtain the electrode part.

[0079] It is understood that the electrode blank needs to be cooled to room temperature before machining. During the cooling process, a protective gas is also introduced to prevent oxidation of the electrode blank. This protective gas can be the same as the one used in step S17, and will not be described in detail here.

[0080] The electrode component uses cobalt as a framework, copper as the matrix on the framework, iron as the carrier on the matrix, and carbon fiber particles as the carrier on the iron. Specifically, copper is located on cobalt, iron on copper, and carbon fiber particles on iron. The material of the electrode component is a cobalt-copper alloy-carbon fiber composite material.

[0081] At least one embodiment of the present invention provides an electrode part prepared by the above-described preparation method.

[0082] The electrode component uses cobalt as a framework, copper as the matrix on the framework, iron as the carrier on the matrix, and carbon fiber particles as the carrier on the iron. Specifically, copper is located on cobalt, iron on copper, and carbon fiber particles on iron. The material of the electrode component is a cobalt-copper alloy-carbon fiber composite material.

[0083] The electrode component preparation method provided by this invention is simple, and the prepared electrode component is easy to process, has low production cost, good chemical stability, strong wear resistance, long service life, high strength, good ablation resistance, good thermal shock resistance, high hardness, high temperature resistance, excellent electrical and thermal conductivity, and certain heat dissipation performance. The electrode component prepared by this invention is made of cobalt-copper alloy-carbon fiber composite material, and the prepared electrode component combines the excellent properties of both carbon / carbon composite materials and cobalt-copper alloy materials. Specifically, cobalt-copper alloy has high mechanical properties, high hardness, good corrosion resistance, high temperature performance, electrical conductivity, and wear resistance, while carbon fiber can also provide certain mechanical properties, corrosion resistance, high temperature performance, electrical conductivity, wear resistance, and thermal conductivity.

[0084] The present invention will be further illustrated below through specific embodiments and comparative examples.

[0085] Example 1

[0086] (1) Crush the carbon fiber to obtain initial carbon fiber particles, and then pass the initial carbon fiber particles through a 100-mesh sieve to obtain carbon fiber particles.

[0087] (2) Cobalt powder, iron powder, carbon fiber particles, stearic acid and machine oil are mixed in a mass ratio of 15:10:10:3:3 to obtain the first mixed powder.

[0088] (3) Cobalt powder, copper powder, iron powder, carbon fiber particles, stearic acid and machine oil are mixed in a mass ratio of 30:45:20:20:2:2 to obtain a second mixed powder.

[0089] (4) Fill the mold cavity with the first mixed powder and make the volume of the first mixed powder occupy 1 / 3 of the cavity volume.

[0090] (5) Fill the mold cavity with the second mixed powder and make the second mixed powder occupy 2 / 3 of the cavity volume.

[0091] (6) The first mixed powder and the second mixed powder in the mold are molded under a pressure of 3.5T so that the first mixed powder and the second mixed powder together form an electrode blank.

[0092] (7) Remove the electrode blank from the mold, and then place the removed electrode blank in an induction furnace at a temperature of 1085°C and filled with hydrogen for sintering for 10 hours to obtain the electrode blank.

[0093] (8) Cool the electrode blank in a hydrogen atmosphere and machine the cooled electrode blank to obtain the electrode part.

[0094] Example 2

[0095] The preparation method of Example 2 is basically the same as that of Example 1, except that:

[0096] In step (2), the mass ratio of cobalt powder, iron powder, carbon fiber particles, stearic acid and engine oil is 20:10:10:3:3.

[0097] Example 3

[0098] The preparation method of Example 3 is basically the same as that of Example 1, except that:

[0099] In step (2), the mass ratio of cobalt powder, iron powder, carbon fiber particles, stearic acid and engine oil is 10:10:10:3:3.

[0100] Example 4

[0101] The preparation method of Example 4 is basically the same as that of Example 1, except that:

[0102] In step (3), the mass ratio of cobalt powder, copper powder, iron powder, carbon fiber particles, stearic acid and engine oil is 30:30:20:20:2:2.

[0103] Example 5

[0104] The preparation method of Example 5 is basically the same as that of Example 1, except that:

[0105] In step (3), the mass ratio of cobalt powder, copper powder, iron powder, carbon fiber particles, stearic acid and engine oil is 30:50:20:20:2:2.

[0106] Example 6

[0107] The preparation method of Example 6 is basically the same as that of Example 1, except that:

[0108] In step (3), the mass ratio of cobalt powder, copper powder, iron powder, carbon fiber particles, stearic acid and engine oil is 30:45:20:10:2:2.

[0109] Comparative Example 1

[0110] The electrode parts were made from carbon / carbon composite materials produced by Hunan Jinbo Carbon Co., Ltd.

[0111] Comparative Example 2

[0112] (1) Crush the carbon fiber to obtain initial carbon fiber particles, and then pass the initial carbon fiber particles through a 100-mesh sieve to obtain carbon fiber particles.

[0113] (2) Cobalt powder, iron powder, carbon fiber particles, stearic acid and machine oil are mixed in a mass ratio of 15:10:10:3:3 to obtain the first mixed powder.

[0114] (3) Cobalt powder, copper powder, iron powder, carbon fiber particles, stearic acid and machine oil are mixed in a mass ratio of 30:45:20:20:2:2 to obtain a second mixed powder.

[0115] (4) Fill the mold cavity with the first mixed powder and make the volume of the first mixed powder occupy 2 / 3 of the cavity volume.

[0116] (5) Fill the mold cavity with the second mixed powder and make the second mixed powder occupy 1 / 3 of the cavity volume.

[0117] (6) The first mixed powder and the second mixed powder in the mold are molded under a pressure of 3.5T so that the first mixed powder and the second mixed powder together form an electrode blank.

[0118] (7) Remove the electrode blank from the mold, and then place the removed electrode blank in an induction furnace at a temperature of 1085°C and filled with hydrogen for sintering for 10 hours to obtain the electrode blank.

[0119] (8) Cool the electrode blank in a hydrogen atmosphere and machine the cooled electrode blank to obtain the electrode part.

[0120] Comparative Example 3

[0121] (1) Crush the carbon fiber to obtain initial carbon fiber particles, and then pass the initial carbon fiber particles through a 100-mesh sieve to obtain carbon fiber particles.

[0122] (2) Cobalt powder, iron powder, stearic acid and machine oil are mixed in a mass ratio of 15:10:3:3 to obtain the first mixed powder.

[0123] (3) Cobalt powder, copper powder, iron powder, stearic acid and machine oil are mixed in a mass ratio of 30:45:20:2:2 to obtain a second mixed powder.

[0124] (4) Fill the mold cavity with the first mixed powder and make the volume of the first mixed powder occupy 1 / 3 of the cavity volume.

[0125] (5) Fill the mold cavity with the second mixed powder and make the second mixed powder occupy 2 / 3 of the cavity volume.

[0126] (6) The first mixed powder and the second mixed powder in the mold are molded under a pressure of 3.5T so that the first mixed powder and the second mixed powder together form an electrode blank.

[0127] (7) Remove the electrode blank from the mold, and then place the removed electrode blank in an induction furnace at a temperature of 1085°C and filled with hydrogen for sintering for 10 hours to obtain the electrode blank.

[0128] (8) Cool the electrode blank in a hydrogen atmosphere and machine the cooled electrode blank to obtain the electrode part.

[0129] The density, porosity, tensile strength, flexural strength, resistivity, and thermal conductivity of the electrode parts prepared in Examples 1-6 and Comparative Examples 1-3 were tested respectively, and the test results are shown in Table 1 below.

[0130] The testing standards are as follows: Density: GB / T19076-2022; Porosity: GB / T19076-2022; Tensile strength: GB / T19076-2022; Flexural strength: GB / T19076-2022; Resistivity: GB / T19076-2022; Thermal conductivity: GB / T3651-2008.

[0131] Table 1 shows the density, porosity, tensile strength, flexural strength, resistivity, and thermal conductivity of the electrode parts prepared in Examples 1-6 and Comparative Examples 1-3.

[0132]

[0133] As shown in Table 1 above, the electrode parts prepared in Examples 1 to 6 have better tensile strength, flexural strength, and electrical and thermal conductivity, while the electrode parts prepared in Comparative Examples 1 to 3 have poorer performance.

[0134] The electrode component preparation method provided by this invention is simple, and the prepared electrode component is easy to process, has low production cost, good chemical stability, strong wear resistance, long service life, high strength, good ablation resistance, good thermal shock resistance, high hardness, high temperature resistance, excellent electrical and thermal conductivity, and certain heat dissipation performance. The electrode component prepared by this invention is made of cobalt-copper alloy-carbon fiber composite material, and the prepared electrode component combines the excellent properties of both carbon / carbon composite materials and cobalt-copper alloy materials. Specifically, cobalt-copper alloy has high mechanical properties, high hardness, good corrosion resistance, high temperature performance, electrical conductivity, and wear resistance, while carbon fiber can also provide certain mechanical properties, corrosion resistance, high temperature performance, electrical conductivity, wear resistance, and thermal conductivity.

[0135] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0136] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A method for fabricating electrode components for use in single-crystal thermal field equipment, characterized in that, Includes the following steps: Cobalt powder, iron powder and carbon fiber particles are mixed to obtain a first mixed powder; Cobalt powder, copper powder, iron powder and carbon fiber particles are mixed to obtain a second mixed powder; The first mixed powder is filled into the cavity of the mold, and the volume of the first mixed powder occupies 1 / 3 to 1 / 2 of the cavity volume; The second mixed powder is filled into the cavity of the mold, and the cavity of the mold is completely filled with the second mixed powder; The first mixed powder and the second mixed powder in the mold are molded to form an electrode green body together; as well as The electrode green blank is sintered to obtain the electrode part.

2. The method for preparing electrode components for use in single-crystal thermal field equipment as described in claim 1, characterized in that, The specific steps involved in mixing cobalt powder, iron powder, and carbon fiber particles are as follows: The cobalt powder, the iron powder, the carbon fiber particles, the first adhesive, and the first lubricant are mixed.

3. The method for preparing electrode components for use in single-crystal thermal field equipment as described in claim 2, characterized in that, The mixing of the cobalt powder, the iron powder, the carbon fiber particles, the first adhesive, and the first lubricant specifically includes the following steps: The cobalt powder, the iron powder, the carbon fiber particles, the first adhesive, and the first lubricant are mixed in a mass ratio of (12.5–15):(7.5–10):(7.5–10):(1–5):(1–5).

4. The method for preparing electrode components for use in single-crystal thermal field equipment as described in claim 2, characterized in that, The preparation method includes at least one of the following (1) to (2): (1) The first adhesive comprises at least one of stearic acid, polypropylene and paraffin; (2) The first lubricant includes at least one of graphite, engine oil and gasoline.

5. The method for preparing electrode components for use in single-crystal thermal field equipment as described in claim 1, characterized in that, The specific steps involved in mixing cobalt powder, copper powder, iron powder, and carbon fiber particles are as follows: The cobalt powder, copper powder, iron powder, carbon fiber particles, second adhesive, and second lubricant are mixed.

6. The method for preparing electrode components for use in single-crystal thermal field equipment as described in claim 5, characterized in that, The mixing of the cobalt powder, copper powder, iron powder, carbon fiber particles, second adhesive, and second lubricant specifically includes the following steps: The cobalt powder, copper powder, iron powder, carbon fiber particles, the second adhesive, and the second lubricant are mixed in a mass ratio of (12.5–15):(25–30):(7.5–10):(7.5–10):(1–5):(1–5).

7. The method for preparing electrode components for use in single-crystal thermal field equipment as described in claim 5, characterized in that, The preparation method includes at least one of the following (3) to (4): (3) The second adhesive includes at least one of stearic acid, polypropylene and paraffin; (4) The second lubricant includes at least one of graphite, engine oil and gasoline.

8. The method for preparing electrode components for single-crystal thermal field equipment as described in any one of claims 1 to 7, characterized in that, The preparation method includes at least one of the following (5) to (6): (5) The temperature for sintering the electrode green blank is 1085℃~1100℃; (6) The sintering time for the electrode green blank is 10h to 20h.

9. The method for preparing electrode components for single-crystal thermal field equipment as described in any one of claims 1 to 7, characterized in that, After sintering the electrode green body, the preparation method further includes the following steps: The sintered electrode green blank is machined to obtain the electrode part.

10. The method for preparing an electrode component for a single-crystal thermal field device as described in any one of claims 1 to 7, characterized in that, The sintered electrode green body is specifically: The electrode green blank is sintered under a protective gas environment.

11. The method for preparing an electrode component for a single-crystal thermal field device as described in any one of claims 1 to 7, characterized in that, The preparation method includes at least one of the following (7) to (9): (7) The particle size of the cobalt powder is 30μm to 60μm; (8) The particle size of the copper powder is 30μm to 60μm; (9) The particle size of the iron powder is 30μm to 60μm.

12. The method for preparing an electrode component for a single-crystal thermal field device as described in any one of claims 1 to 7, characterized in that, The method for preparing the carbon fiber particles includes the following steps: The carbon fiber was crushed to obtain initial carbon fiber particles; and The initial carbon fiber particles are passed through a sieve to obtain the carbon fiber particles.

13. An electrode part prepared by a method for preparing an electrode part for use in a single-crystal thermal field device as described in any one of claims 1 to 12.

14. The electrode component as described in claim 13, characterized in that, The electrode component uses cobalt as the skeleton, copper as the matrix on the skeleton, iron as the carrier on the matrix, and carbon fiber particles as the carrier on the iron.

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