Batch hydrogen reduction coupling photocuring alloy additive manufacturing method and alloy component

Abstract

The invention discloses a batch hydrogen reduction coupling photocuring alloy additive manufacturing method and an alloy component, and belongs to the technical field of metal additive manufacturing. The method comprises the following steps: S1, according to a target alloy ratio, dissolving corresponding metal salt in deionized water to form a uniform solution, and preparing spherical metal salt precursor particles with controllable particle size through spray drying; s2, mixing the precursor particles with photosensitive resin, a photoinitiator and a dispersing agent to prepare stable slurry; s3, printing a green body from the slurry by using a photocuring printer; and S4, the green body is sequentially subjected to degreasing, hydrogen reduction and sintering treatment, and the compact alloy component is obtained. According to the preparation method, alloy elements are uniformly mixed in advance in the atomic scale through spray drying, the spherical precursor suitable for printing is formed, the problems of alloy component segregation and batch production are fundamentally solved, and alloy parts of various complex structures can be prepared with high efficiency and high quality.

Description

Technical Field

[0001] This invention relates to the field of alloy additive manufacturing of metals, and particularly to a mass-producible hydrogen reduction coupled photopolymerization alloy additive manufacturing method and alloy components. Background Technology

[0002] Hydrogen reduction coupled photopolymerization metal additive manufacturing is an emerging manufacturing process with advantages such as low production cost, high forming accuracy, and high efficiency. Because this process does not rely on high-energy beams (such as lasers or electron beams) for in-situ melting of metal powder, it is particularly suitable for materials that are difficult to process using traditional high-energy beam additive manufacturing, such as refractory metals like copper and tungsten, or materials sensitive to heat input. Related patents (such as CN116550998A and CN116586624A) have demonstrated the application of this technology in the fabrication of pure metal irregular shapes.

[0003] However, existing technologies are mainly limited to the preparation of pure metal components, and face significant bottlenecks in alloy preparation. The main limiting factors include: 1. Commonly used metal salt precursors (mostly crystals with water of crystallization) have irregular particle shapes (sharp edges) and lack effective particle size control methods, which affect the rheological properties of the slurry and the printing quality.

[0004] 2. There is a lack of effective methods to achieve uniform mixing of alloying elements at the atomic scale. Simple mechanical mixing is limited by the particle size of the precursor, making it difficult to achieve uniform distribution of elements. This leads to compositional segregation in the final alloy parts during heat treatment, affecting their performance.

[0005] 3. Existing methods for preparing mixed metal salt precursors (such as chemical coprecipitation) are inefficient and make it difficult to precipitate different elements simultaneously and in proportion, resulting in imbalanced proportions and low yield during mass production.

[0006] Therefore, there is an urgent need for a hydrogen reduction coupled photopolymerization additive manufacturing method that can overcome the above-mentioned defects and achieve efficient, high-quality, and mass production of alloy components. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a mass-producible hydrogen reduction coupled photopolymerization alloy additive manufacturing method and alloy components, enabling the batch, high-efficiency, and high-quality preparation of various complex alloy components. This method fundamentally solves the problems of element mixing uniformity and mass production by improving the precursor preparation process.

[0008] The present invention adopts the following technical solution: On the one hand, the present invention provides a scalable hydrogen reduction coupled photopolymerization alloy additive manufacturing method, comprising the following steps: S1. Preparation of metal salt precursor by spray drying: According to the element ratio of the target alloy, determine the type and proportion of the corresponding metal salt, dissolve it in deionized water and mix it evenly to obtain a mixed solution; spray dry the mixed solution to obtain spherical metal salt precursor particles with controllable particle size and uniform distribution. S2. Slurry preparation: The spherical metal salt precursor particles obtained in step S1, photosensitive resin, photoinitiator and dispersant are mixed evenly and air bubbles are removed to obtain a stable metal salt precursor slurry. S3. Photopolymerization printing: Using a photopolymerization printer, the metal salt precursor slurry prepared in step S2 is used for printing to obtain a blank containing the metal salt precursor. S4. Heat treatment of the billet: The billet obtained in step S3 is subjected to degreasing treatment, hydrogen reduction treatment and sintering treatment in sequence to obtain the final alloy component; wherein the degreasing treatment, hydrogen reduction treatment and sintering treatment are carried out under different atmospheres and temperature regimes.

[0009] In addition to any of the possible implementations described above, another implementation is provided in which, in step S1, the metal salt includes one or more of copper sulfate, nickel sulfate, ferrous sulfate, cobalt sulfate, silver nitrate, ammonium molybdate, ammonium metatungstate, and ammonium rheniumate.

[0010] In addition to any of the possible implementations described above, another implementation is provided in which the particle size of the spherical metal salt precursor particles prepared by spray drying in step S1 is 1-20 μm.

[0011] In addition to any of the possible implementations described above, a further implementation is provided in which, in step S2, the photosensitive resin is an acrylate photosensitive resin selected from one or more of 1,6-hexanediol diacrylate (HDDA), trimethylolpropane triacrylate (TMPTA), ethoxylated trimethylolpropane triacrylate (ETPPTA), polyurethane acrylate, and polyester acrylate; the photoinitiator is selected from one or more of TPO and 819; and the dispersant is selected from one or more of BYK180, BYK111, and BYK2013.

[0012] In addition to any of the possible implementations described above, a further implementation is provided in which, in step S2, the metal salt precursor accounts for 40%-50% of the total volume of the slurry, the photosensitive resin accounts for 50%-60% of the total volume of the slurry, the amount of photoinitiator added is 1%-5% of the mass of the photosensitive resin, and the amount of dispersant added is 5%-10% of the mass of the metal salt precursor.

[0013] In addition to any of the possible implementations described above, another implementation is provided in which, in step S3, the light-curing printer is a digital light processing (DLP) printer using a surface exposure method.

[0014] In addition to any of the possible implementations described above, another implementation is provided in which, in step S4, the degreasing treatment is carried out in an argon, nitrogen, or air atmosphere, and the treatment temperature is raised from room temperature to 700°C; the hydrogen reduction treatment is carried out in a hydrogen atmosphere, and the treatment temperature is raised from room temperature to 850°C; the sintering treatment is carried out in an argon or hydrogen atmosphere, and the treatment temperature is raised from room temperature to 1100°C-1800°C.

[0015] In addition to any of the possible implementations described above, another implementation is provided in which the specific parameters of the spray drying in step S1 are adjusted experimentally according to the type of target alloy and the required precursor particle size.

[0016] In addition to any of the possible implementations described above, a further implementation is provided in which, in step S2, ball milling and / or vacuum homogenization are used for mixing to achieve uniform mixing of the slurry and removal of air bubbles.

[0017] On the other hand, the present invention also provides an alloy component, which is prepared by the above-described method.

[0018] The beneficial effects of this invention are as follows: 1. Mass production and high efficiency: By using spray drying technology, spherical metal salt precursors with uniform composition can be prepared continuously and in large quantities, which solves the problems of low efficiency and difficulty in controlling the co-precipitation ratio of traditional methods such as chemical co-precipitation, laying the foundation for large-scale production.

[0019] 2. Uniform element mixing and precise composition: During the solution stage before spray drying, all metal elements have achieved uniform mixing at the atomic scale. After drying, the designed proportions are maintained within each spherical particle, fundamentally avoiding macroscopic segregation caused by uneven element diffusion during subsequent heat treatment, thus ensuring the accuracy and consistency of the final alloy composition.

[0020] 3. Strong raw material adaptability and high printing quality: The spherical precursor particles have good flowability and are easy to mix with resin to form a slurry with high solid content, low viscosity and good stability, which significantly improves the accuracy of photopolymerization printing and the quality of the preform.

[0021] 4. Good process compatibility: The method of this invention is perfectly compatible with mainstream surface exposure DLP photopolymerization technology, which can efficiently and accurately form complex three-dimensional structures. Combined with mature post-processing technology, it can produce complex components of various high-performance alloys. Attached Figure Description

[0022] Figure 1 The diagram shown is a schematic flow chart of a mass-producible hydrogen reduction coupled photopolymerization alloy additive manufacturing method according to an embodiment of the invention.

[0023] Figure 2 The image shows the SEM and EDS images of the TPMS lattice of the W-Cu alloy prepared in Example 1. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0025] The accompanying drawings illustrate a layer structure according to an embodiment of the present invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0026] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] like Figure 1 As shown in the figure, an embodiment of the present invention provides a scalable hydrogen reduction coupled photopolymerization alloy additive manufacturing method, comprising the following steps: S1. Preparation of metal salt precursors by spray drying: Based on the chemical composition of the target alloy, the corresponding metal salts are accurately weighed and dissolved together in deionized water, stirred to form a homogeneous mixed solution; subsequently, the solution is dried using spray drying technology to obtain spherical metal salt precursor particles with controllable particle size and regular shape. This step achieves atomic-level homogeneous mixing of different metal elements in the solution and fixes them in each subsequently formed spherical particle. During spray drying, the raw material liquid is dispersed into a large number of fine droplets through an atomizer. Surface tension causes them to spontaneously shrink into spheres with the smallest surface area, which are then rapidly dried to form spherical powder. There are three main factors controlling the particle size: first, the spray pressure; generally, the higher the pressure, the smaller the droplets and the smaller the final powder particle size; second, the mass fraction of the solute in the solution; the more solute, the more solid phase is dried, resulting in smaller droplet volume shrinkage and larger particle size; and third, the surface tension and viscosity of the solution. These three factors together determine the droplet size, and thus the final particle size. S2. Slurry Preparation: The spherical metal salt precursor particles obtained in step S1 are mixed with photosensitive resin, photoinitiator, dispersant, etc., in a specific ratio. Thorough mixing and degassing are performed using methods such as ball milling and vacuum stirring to form a stable, uniform metal salt precursor slurry suitable for photocurable printing. S3. Photopolymerization printing: The slurry prepared in step S2 is loaded into a photopolymerization printer (preferably a surface exposure digital light processing-DLP printer), and cured layer by layer according to the three-dimensional model data to print a precision blank (green blank) containing the metal salt precursor. S4. Heat treatment of the billet (degreasing, hydrogen reduction, sintering): The printed billet is placed in a heat treatment furnace and subjected to degreasing (removal of organic resin components), hydrogen reduction (reduction of metal salts to elemental metals), and sintering (densification of metal particles and formation of alloy) in sequence under different atmospheres and temperature control programs, finally obtaining a dense alloy component.

[0030] In one specific embodiment, in step S1, the metal salt is a salt of an element that can be reduced by hydrogen gas, such as copper sulfate, nickel sulfate, ferrous sulfate, cobalt sulfate, silver nitrate, ammonium molybdate, ammonium metatungstate, ammonium rheniumate, etc. By controlling the spray drying process parameters, the particle size of the obtained spherical precursor particles can be controlled within the range of 1-20 μm.

[0031] In one specific embodiment, in step S2, the photosensitive resin can be selected from one or more common acrylate resins such as 1,6-hexanediol diacrylate (HDDA), trimethylolpropane triacrylate (TMPTA), ethoxylated trimethylolpropane triacrylate (ETPPTA), polyurethane acrylate, and polyester acrylate; the photoinitiator can be selected from common free radical photoinitiators such as TPO and 819; the dispersant can be selected from commercial products such as BYK180, BYK111, and BYK2013; the preferred ratio is: the metal salt precursor accounts for 40%-50% of the total volume of the slurry, the photosensitive resin accounts for 50%-60%, the amount of photoinitiator added is 1%-5% of the mass of the photosensitive resin, and the amount of dispersant added is 5%-10% of the mass of the metal salt precursor.

[0032] In one specific embodiment, in step S4, the degreasing step is typically carried out in an inert gas (such as argon or nitrogen) or air, with the temperature ranging from room temperature to approximately 700°C; the hydrogen reduction step is carried out in a hydrogen atmosphere, with the temperature ranging from room temperature to approximately 850°C; the sintering step is carried out in an inert or hydrogen-reducing atmosphere (such as argon or hydrogen), with the sintering temperature depending on the alloy type, ranging from 1100°C to 1800°C. The heating rate and holding time for each stage can be adjusted according to the specific material.

[0033] It should be noted that the three steps of degreasing, hydrogen reduction, and sintering can be carried out continuously without interruption, with the temperature increasing sequentially: degreasing temperature → hydrogen reduction temperature → sintering temperature; or, after degreasing, the temperature can be lowered to room temperature, then hydrogen reduction can be performed from room temperature to the hydrogen reduction temperature, and after hydrogen reduction, the temperature can be lowered to room temperature; finally, sintering can be performed from room temperature to the sintering temperature. The latter mainly considers that different stages may be carried out in different working furnaces, which does not affect the final product quality.

[0034] Example 1: Preparation of W-Cu alloy S1. Precursor preparation: Weigh 20 parts by mass of copper sulfate pentahydrate (CuSO4·5H2O) and 80 parts by mass of ammonium metatungstate ((NH4)6H2W). 12 O 40 Dissolve xH₂O in 300 parts by weight of deionized water and stir magnetically for 10 minutes until completely dissolved and mixed evenly. Dry the resulting solution using a spray dryer, adjusting the parameters to obtain spherical composite metal salt precursor particles with an average particle size of approximately 5 μm.

[0035] S2. Slurry Preparation: Weigh 5 parts by volume of the above precursor particles, 3 parts by volume of HDDA, 1 part by volume of TMPTA, 1 part by volume of polyurethane acrylate, and 0.3 parts by mass (relative to the precursor mass) of dispersant BYK180, place them in a ball mill jar, and ball mill at 400 r / min for 6 hours. Then, add 0.02 parts by mass (relative to the total mass of photosensitive resin) of photoinitiator TPO, and mix using a vacuum homogenizer at 1200 r / min and 0.1 kPa vacuum for 3 minutes to fully degas and obtain a homogeneous slurry.

[0036] S3, Photopolymer Printing: Inject the paste into the material tank of the DLP photopolymer printer, set the printing parameters, and print a three-dimensional blank with a TPMS lattice structure.

[0037] S4. Heat Treatment: The billet is placed in a tube furnace for programmed heat treatment. First, under the protection of flowing argon, the temperature is increased to 400℃ and 600℃ at a rate of 1℃ / min and held for 2 hours each for degreasing. Then, the temperature is switched to air and increased to 500℃ at a rate of 3℃ / min and held for 2 hours to completely remove residual carbon. Finally, under a hydrogen reducing atmosphere, the temperature is increased to 300℃, 600℃, 800℃ and 1200℃ at a rate of 10℃ / min, and held for 2 hours at each temperature to complete hydrogen reduction and sintering, resulting in a dense W-Cu alloy component.

[0038] SEM and EDS images of the TPMS lattice of the prepared W-Cu alloy are shown below. Figure 2 As shown, the W and Cu elements are distributed very evenly in the WCu alloy.

[0039] Example 2: Preparation of W-Mo-Ni alloy S1. Precursor preparation: Weigh ammonium metatungstate and ammonium molybdate ((NH4)6Mo7O) at a mass ratio of 1:1:1. 24 60 parts of nickel nitrate (Ni(NO3)2·6H2O) and 4H2O were dissolved in 200 parts of deionized water. After stirring and dissolving evenly, the mixture was spray-dried to obtain a spherical precursor with an average particle size of about 10 μm.

[0040] S2. Slurry preparation: Take 4.5 parts by volume of precursor, 2 parts by volume of HDDA, 1.5 parts by volume of TMPTA, 2 parts by volume of polyurethane acrylate, and 0.2 parts by volume of BYK110, and ball mill them for 8 hours (350 r / min). Add 0.03 parts by volume of photoinitiator 819, and vacuum homogenize for 2 minutes (1200 r / min, 0.1 kPa).

[0041] S3. Use a DLP printer to form the TPMS structural blank.

[0042] S4. Heat treatment: Degreasing is performed by heating at 2 °C / min under argon atmosphere and holding at 400 °C, 600 °C, and 700 °C for 2 hours each; carbon removal is performed by heating at 2 °C / min to 600 °C and holding at 2 hours under air atmosphere; hydrogen reduction sintering is performed by heating at 10 °C / min under hydrogen atmosphere and holding at 400 °C, 600 °C, 800 °C, and 1350 °C for 2 hours each to obtain W-Mo-Ni alloy parts.

[0043] Example 3: Preparation of Cu-Ni Alloy S1. Precursor preparation: Weigh out 60 parts of copper sulfate and nickel sulfate (NiSO4·6H2O) in equal mass, dissolve them in 200 parts of deionized water, stir to dissolve, and then spray dry to obtain a spherical precursor of about 5 μm.

[0044] S2. Slurry preparation: Take 5 parts by volume of precursor, 1 part by volume of HDDA, 1 part by volume of ETPPTA, 3 parts by volume of polyurethane acrylate, and 0.3 parts by volume of BYK2013, and ball mill for 6 hours (400 r / min). Add 0.02 parts by volume of TPO and homogenize under vacuum for 3 minutes (1200 r / min, 0.1 KPa).

[0045] S3. Use a DLP printer to form the TPMS structural blank.

[0046] S4. Heat treatment: Degreasing is performed by heating at 2 °C / min under argon atmosphere and holding at 400 °C, 500 °C, and 600 °C for 2 hours each; carbon removal is performed by heating at 2 °C / min to 650 °C and holding at 2 hours under air atmosphere; hydrogen reduction sintering is performed by heating at 10 °C / min and holding at 300 °C, 400 °C, 800 °C, and 1100 °C for 2 hours each to obtain Cu-Ni alloy parts.

[0047] This invention solves the challenge of raw materials not meeting printing requirements during photopolymerization preparation of metal materials by using spray drying to prepare highly spherical metal salt precursors in large quantities and with high efficiency. Spray drying can achieve atomic-level mixing of elements, effectively avoiding the problem of element segregation during subsequent heat treatment, and ensuring that the alloy is produced according to the designed element ratio. The surface-exposure DLP photopolymerization printer can achieve rapid forming of the blank with high precision.

[0048] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this application; at the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0049] Certain terms are used in the specification and claims to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The terms "comprising" and "including" used throughout the specification and claims are open-ended and should be interpreted as "comprising / including but not limited to". "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error. The following descriptions in the specification are preferred embodiments for carrying out this application; however, these descriptions are for the purpose of illustrating the general principles of this application and are not intended to limit the scope of this application. The scope of protection of this application shall be determined by the appended claims.

[0050] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0051] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0052] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A mass-producible hydrogen reduction coupled photopolymerization alloy additive manufacturing method, characterized in that, Includes the following steps: S1. Preparation of metal salt precursor by spray drying: According to the element ratio of the target alloy, determine the type and proportion of the corresponding metal salt, dissolve it in deionized water and mix it evenly to obtain a mixed solution; spray dry the mixed solution to obtain spherical metal salt precursor particles with controllable particle size and uniform distribution. S2. Slurry preparation: The spherical metal salt precursor particles obtained in step S1, photosensitive resin, photoinitiator and dispersant are mixed evenly and air bubbles are removed to obtain a stable metal salt precursor slurry. S3. Photopolymerization printing: Using a photopolymerization printer, the metal salt precursor slurry prepared in step S2 is used for printing to obtain a blank containing the metal salt precursor. S4. Heat treatment of the billet: The billet obtained in step S3 is subjected to degreasing treatment, hydrogen reduction treatment and sintering treatment in sequence to obtain the final alloy component; wherein the degreasing treatment, hydrogen reduction treatment and sintering treatment are carried out under different atmospheres and temperature regimes.

2. The scalable hydrogen reduction coupled photopolymerization alloy additive manufacturing method as described in claim 1, characterized in that, In step S1, the metal salt includes one or more of copper sulfate, nickel sulfate, ferrous sulfate, cobalt sulfate, silver nitrate, ammonium molybdate, ammonium metatungstate, and ammonium rheniumate.

3. The scalable hydrogen reduction coupled photopolymerization alloy additive manufacturing method as described in claim 1, characterized in that, In step S1, the spherical metal salt precursor particles prepared by spray drying have a particle size of 1-20 μm.

4. The scalable hydrogen reduction coupled photopolymerization alloy additive manufacturing method as described in claim 1, characterized in that, In step S2, the photosensitive resin is an acrylate photosensitive resin, selected from one or more of 1,6-hexanediol diacrylate, di(trimethylolpropane) triacrylate, ethoxylated trimethylolpropane triacrylate, polyurethane acrylate, and polyester acrylate; the photoinitiator is selected from one or more of TPO and 819; and the dispersant is selected from one or more of BYK180, BYK111, and BYK2013.

5. The scalable hydrogen reduction coupled photopolymerization alloy additive manufacturing method as described in claim 1, characterized in that, In step S2, the metal salt precursor accounts for 40%-50% of the total volume of the slurry, the photosensitive resin accounts for 50%-60% of the total volume of the slurry, the amount of photoinitiator added is 1%-5% of the mass of the photosensitive resin, and the amount of dispersant added is 5%-10% of the mass of the metal salt precursor.

6. The scalable hydrogen reduction coupled photopolymerization alloy additive manufacturing method as described in claim 1, characterized in that, In step S3, the light-curing printer is a digital light processing printer that uses surface exposure.

7. The scalable hydrogen reduction coupled photopolymerization alloy additive manufacturing method as described in claim 1, characterized in that, In step S4, the degreasing treatment is carried out in an atmosphere of argon, nitrogen, or air, and the treatment temperature is raised from room temperature to 700°C; the hydrogen reduction treatment is carried out in an atmosphere of hydrogen, and the treatment temperature is raised from room temperature to 850°C; the sintering treatment is carried out in an atmosphere of argon or hydrogen, and the treatment temperature is raised from room temperature to 1100°C-1800°C.

8. The scalable hydrogen reduction coupled photopolymerization alloy additive manufacturing method as described in claim 1, characterized in that, In step S1, the specific parameters of the spray drying are adjusted through experiments based on the type of target alloy and the required precursor particle size.

9. The scalable hydrogen reduction coupled photopolymerization alloy additive manufacturing method as described in claim 1, characterized in that, In step S2, ball milling and / or vacuum homogenization are used for mixing to achieve uniform mixing of the slurry and remove air bubbles.

10. An alloy component, characterized in that, The alloy component is prepared by the method described in any one of claims 1-9.

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