Atomizer, electronic atomization device, and preparation method for ceramic-like metal part

Abstract

Provided in the present application are an atomizer, an electronic atomization device, and a preparation method for a ceramic-like metal part. The atomizer comprises a ceramic-like metal part, the ceramic-like metal part comprising a metal substrate and a functional layer formed on a surface of the metal substrate. The production cost of the ceramic-like metal part of the atomizer is relatively low.

Description

Atomizer, electronic atomization device, and preparation method of imitation ceramic metal part

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority based on Chinese patent application No. 2023111612087 filed on September 7, 2023, and all of its contents are incorporated herein by reference.

Technical field

[0003] The present invention relates to the technical field of electronic atomization, and in particular to an atomizer, an electronic atomization device and a method for preparing a ceramic-like metal part. [Background Technology]

[0004] The aerosol generating device includes an atomizer, which comprises a housing and a ceramic tube. The ceramic tube is disposed within the housing. The outer wall of the ceramic tube cooperates with the inner wall of the housing to form a liquid storage chamber for storing the atomizing medium. The inner wall of the ceramic tube defines an outlet channel, through which the aerosol formed by the atomized atomizing medium flows. Currently, most ceramic tubes on the market are made of pure ceramic, resulting in high production costs.

[0005] [Summary of the invention]

[0006] The atomizer, electronic atomization device, and preparation method of the imitation ceramic metal part provided in this application mainly solve the problem of high production cost of the atomizer.

[0007] To solve the above technical problems, a technical solution adopted in this application is to provide an atomizer, which includes: an imitation ceramic metal part, wherein the imitation ceramic metal part includes a metal substrate and a functional layer formed on the surface of the metal substrate.

[0008] In one embodiment, the roughness of the surface of the metal substrate facing the functional layer is 0.5-1.5 μm.

[0009] In one embodiment, the thickness of the functional layer is 5 μm-25 μm.

[0010] In one embodiment, the metal substrate is a stainless steel substrate; and the functional layer includes a film-forming agent, a stabilizer, and a colorant.

[0011] In one embodiment, the functional layer is obtained by spraying and curing a coating; wherein the coating comprises a solvent, a film-forming agent, a stabilizer, a colorant, and an additive;

[0012] Preferably, the coating comprises the following components in parts by weight: 20-40 parts of solvent, 10-50 parts of film-forming agent, 20-50 parts of stabilizer, 10-20 parts of colorant and 1-20 parts of auxiliary agent;

[0013] Preferably, the auxiliary agent comprises at least one of the following components in parts by weight: 1-10 parts of a curing agent, 1-5 parts of a leveling agent or 1-5 parts of a dispersant;

[0014] Preferably, the film-forming agent includes an epoxy resin; further preferably, the film-forming agent includes a water-based epoxy resin; particularly preferably, the film-forming agent further includes at least one of the following components in parts by weight: 1-10 parts of a polyimide resin, 1-10 parts of an alkyd resin, or 1-10 parts of a phosphate;

[0015] Preferably, the solvent comprises deionized water;

[0016] Preferably, the stabilizer comprises at least one of silicon, aluminum or titanium; and / or the stabilizer comprises a nitride and / or oxide of at least one of silicon, aluminum or titanium;

[0017] Further preferably, the stabilizer comprises at least one of the following components in parts by weight: 10-25 parts of silicon or 10-25 parts of aluminum;

[0018] Preferably, the colorant agent comprises titanium dioxide and / or titanium;

[0019] Preferably, the average particle size of the colorant is 0.01-0.5 μm;

[0020] Preferably, the average particle size of the stabilizer is 0.1-1 μm.

[0021] In one embodiment, the ceramic-like metal part satisfies at least one of the following conditions: the hardness of the functional layer is greater than 8H; the roughness of the surface of the functional layer on the side away from the metal substrate is 0.2-0.3 μm; the surface energy of the surface of the functional layer on the side away from the metal substrate is greater than or equal to 1.5×10 -2 N / m and less than or equal to 1.9×10 -2 N / m; the thermal conductivity of the functional layer is greater than or equal to 16w / (m·k) and less than or equal to 22w / (m·k); the volume resistivity of the functional layer is greater than 10 17 Ω·cm, and the arc resistance of the functional layer is greater than 300s.

[0022] In one embodiment, the atomizer further includes a shell, the imitation ceramic metal part cooperates with the shell to form a liquid storage cavity, and the liquid storage cavity is used to store the atomizing medium; the functional layer faces the liquid storage cavity.

[0023] In order to solve the above technical problems, the second technical solution provided in this application is: to provide an electronic atomization device, including the atomizer described above.

[0024] In order to solve the above technical problems, the third technical solution provided in this application is: providing a preparation method of ceramic-like metal parts, comprising: roughening the surface of a metal substrate so that the roughness of the surface of the metal substrate is 0.5-1.5 μm; spraying a coating on the surface of the roughened metal substrate; curing the coating to form the functional layer; wherein the curing temperature is 150-300°C; preferably, the process for roughening the surface of the metal substrate is a sandblasting process; preferably, the particle size of the sandblasting in the sandblasting process is 80 mesh-180 mesh.

[0025] In one embodiment, the coating comprises a solvent, a film former, a stabilizer, a colorant and an additive;

[0026] Preferably, the coating comprises the following components in parts by weight: 20-40 parts of solvent, 10-50 parts of film-forming agent, 20-50 parts of stabilizer, 10-20 parts of colorant and 1-20 parts of auxiliary agent;

[0027] Preferably, the auxiliary agent comprises at least one of the following components in parts by weight: 1-10 parts of a curing agent, 1-5 parts of a leveling agent or 1-5 parts of a dispersant;

[0028] Preferably, the film-forming agent includes an epoxy resin; further preferably, the film-forming agent includes a water-based epoxy resin; particularly preferably, the film-forming agent further includes at least one of the following components in parts by weight: 1-10 parts of a polyimide resin, 1-10 parts of an alkyd resin, or 1-10 parts of a phosphate;

[0029] Preferably, the solvent comprises deionized water;

[0030] Preferably, the stabilizer comprises at least one of silicon, aluminum or titanium; and / or the stabilizer comprises a nitride and / or oxide of at least one of silicon, aluminum or titanium;

[0031] Further preferably, the stabilizer comprises at least one of the following components in parts by weight: 10-25 parts of silicon or 10-25 parts of aluminum;

[0032] Preferably, the colorant agent comprises titanium dioxide and / or titanium;

[0033] Preferably, the average particle size of the colorant is 0.01-0.5 μm;

[0034] Preferably, the average particle size of the stabilizer is 0.1-1 μm.

[0035] The beneficial effects of the embodiments of the present application, which differ from the prior art, include providing an atomizer. The atomizer includes a ceramic-like metal part, which includes a metal substrate and a functional layer formed on the surface of the metal substrate. This allows the functional layer to include a ceramic component, depending on actual needs, to function as a ceramic part. Furthermore, because the interior of the ceramic-like metal part is a metal substrate, production costs can be significantly reduced compared to a pure ceramic structure of the entire ceramic-like metal part.

Brief Description of the Drawings

[0036] FIG1 is a schematic diagram of the overall structure of an atomizer provided in one embodiment of the present application;

[0037] FIG2 is a cross-sectional view of the atomizer shown in FIG1 along the line AA;

[0038] FIG3 is a schematic diagram of the overall structure of a ceramic-like metal part provided in one embodiment of the present application;

[0039] FIG4 is a cross-sectional view of a side wall of a ceramic-like metal component provided in one embodiment of the present application;

[0040] FIG5 is a cross-sectional view of a side wall of a ceramic-like metal component provided in another embodiment of the present application;

[0041] FIG6 is a simplified structural diagram of an electronic atomization device provided in one embodiment of the present application;

[0042] FIG7 is a flow chart of a method for preparing a ceramic-like metal part provided in one embodiment of the present application.

[0043] Explanation of the accompanying figures: 10-atomizer; 1-ceramic-like metal part; 11-metal substrate; 12-functional layer; 13-liquid outlet; 2-housing; 20-host. [Specific implementation method]

[0044] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] The terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of such features. In the description of this application, "multiple" means at least two, for example, two, three, etc., unless otherwise specifically defined. All directional indications in the embodiments of this application (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of the various components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to such process, method, product, or device.

[0046] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0047] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0048] In the related art, structures that come into contact with the atomized medium, such as the ceramic tube that forms the liquid storage cavity in conjunction with the housing, are mostly made of pure ceramic. However, the production cost of pure ceramic structural parts is relatively high.

[0049] To this end, an embodiment of the present application provides an atomizer, an electronic atomization device, and a method for preparing a ceramic-like metal part. The atomizer includes a ceramic-like metal part, which forms a functional layer on the surface of a metal substrate to achieve the performance of ceramics. At the same time, the use of a metal substrate can reduce costs.

[0050] Please refer to Figures 1 to 4. Figure 1 is a schematic diagram of the overall structure of an atomizer provided in one embodiment of the present application; Figure 2 is a cross-sectional view taken along the AA axis of the atomizer shown in Figure 1; Figure 3 is a schematic diagram of the overall structure of a ceramic-like metal component provided in one embodiment of the present application; and Figure 4 is a cross-sectional view of the sidewall of a ceramic-like metal component provided in one embodiment of the present application. In this embodiment, an atomizer 10 is provided for atomizing an atomizing medium to form an aerosol. The atomizer 10 comprises a ceramic-like metal component 1, a housing 2, and an atomizing core. The atomizing medium is heated to form an aerosol. The atomizing medium may be a solid matrix, and may include one or more of powder, granules, fragments, strips, or flakes of one or more plant leaves, such as tobacco, herb leaves, tea leaves, and mint leaves. Alternatively, the solid matrix may contain additional volatile aroma compounds that are released when the matrix is ​​heated. Of course, the atomizing medium may also include a liquid matrix or a paste-like matrix, such as an oil or liquid medicine with added aroma components. The specific structure and function of the atomizer 10 can be found in the existing atomizers and will not be described in detail here.

[0051] 2 , the imitation ceramic metal part 1 is arranged in the outer shell 2. In one embodiment, the outer wall surface of the side wall of the imitation ceramic metal part 1 is spaced apart from the inner wall surface of the outer shell 2, and cooperates to form a liquid storage chamber, which is used to store the atomizing medium. The inner wall surface of the side wall of the imitation ceramic metal part 1 defines an air outlet channel, and the imitation ceramic metal part 1 has a liquid outlet hole 13 that passes through the inner wall surface and the outer wall surface of the side wall; the atomizing medium in the liquid storage chamber flows out through the liquid outlet hole 13. The atomizing core is arranged corresponding to the liquid outlet hole 13, and is used to atomize the atomizing medium flowing out of the liquid outlet hole 13 to form an aerosol, and the aerosol flows out of the atomizer 10 from the air outlet channel; this embodiment of the present application takes this as an example. Of course, in other embodiments, the imitation ceramic metal part 1 can also be used as other structural parts that may come into contact with the atomizing medium or aerosol; such as a base or bracket supporting the atomizing core.

[0052] Referring to Figure 4 , the ceramic-like metal component 1 includes a metal substrate 11 and a functional layer 12 formed on the surface of the metal substrate 11. By configuring the main body of the ceramic-like metal component 1 to be made of metal and forming the functional layer 12 on the metal substrate 11, the functional layer 12 can be configured to include a ceramic component based on actual needs to achieve the performance associated with a ceramic structural component. Furthermore, the metal substrate 11 can significantly reduce the production cost of the ceramic-like metal component 1 compared to a structure where the entire ceramic-like metal component 1 is made entirely of ceramic.

[0053] Specifically, the metal substrate 11 is hollow, and the hollow metal substrate 11 has an inner surface and an outer surface facing each other. The inner surface of the metal substrate 11 is used to define an air outlet channel, and the outer surface of the metal substrate 11 is arranged to face the outer shell 2. The functional layer 12 is formed on at least the outer surface of the metal substrate 11. In a specific embodiment, as shown in FIG4 , the functional layer 12 is formed on the outer surface of the metal substrate 11, and the functional layer 12 faces the liquid storage chamber; to prevent the atomized medium from directly contacting the outer wall surface of the imitation ceramic metal part 1, causing the imitation ceramic metal part 1 to be corroded and causing safety problems. In another specific embodiment, see FIG5 , which is a cross-sectional view of the side wall of the imitation ceramic metal part provided in another embodiment of the present application; the functional layer 12 is formed on both the inner surface and the outer surface of the metal substrate 11; in this way, it can be prevented that the atomized medium or aerosol condensate entering the imitation ceramic metal part 1 causes damage to the inner wall surface of the imitation ceramic metal part 1, thereby affecting the smoking taste. This application is explained using the structure corresponding to FIG5 as an example.

[0054] The surface roughness of the metal substrate 11 facing the functional layer 12 is too low, which hinders the adhesion of the functional layer 12. On the other hand, the surface roughness of the metal substrate 11 facing the functional layer 12 is too high, which affects the function of the functional layer 12 after adhesion. Therefore, in one embodiment, the surface roughness of the metal substrate 11 facing the functional layer 12 is 0.5-1.5 μm. For example, the surface roughness of the metal substrate 11 facing the functional layer 12 can be 0.5 μm, 0.8 μm, 1.1 μm, 1.5 μm, etc. The metal substrate 11 can specifically be a stainless steel substrate or other alloys.

[0055] It should be noted that when the functional layer 12 is formed on the outer surface of the metal substrate 11, the surface of the metal substrate 11 facing the functional layer 12 involved in this application is the outer surface of the metal substrate 11. When the functional layer 12 is formed on both the inner and outer surfaces of the metal substrate 11, the surface of the metal substrate 11 facing the functional layer 12 involved in this application includes both the outer and inner surfaces of the metal substrate 11.

[0056] If the functional layer 12 is too thin, it will not adhere to the surface of the metal substrate 11 and will affect the ceramic properties after the functional layer 12 is attached. If the functional layer 12 is too thick, it will increase the cost. Therefore, in some embodiments, the thickness h1 of the functional layer 12 is 5μm-25μm; for example, h1 can be 5μm, 10μm, 15μm, 20μm, or 25μm.

[0057] The surface roughness of the functional layer 12 facing away from the metal substrate 11 is 0.2-0.3 μm, for example, 0.2 μm. This allows the surface of the functional layer 12 to be smooth and shiny, significantly reducing the coefficient of friction on the surface of the functional layer 12 and enhancing its wear resistance, resulting in an excellent appearance.

[0058] In one embodiment, the functional layer 12 includes an inorganic component. Specifically, the functional layer 12 includes a ceramic component. The ceramic component may be a nitride and / or oxide of at least one of silicon, aluminum, and titanium. Specifically, the ceramic component may be at least one of silicon nitride, aluminum nitride, aluminum oxide, aluminum nitride, or titanium oxide.

[0059] Functional layer 12 comprises a film former, a stabilizer, and a colorant. Functional layer 12 is formed by spray-curing a coating. The coating comprises a solvent, a film former, a stabilizer, a colorant, and additives. The coating comprises the following ingredients by weight: 20-40 parts solvent, 10-50 parts film former, 20-50 parts stabilizer, 10-20 parts colorant, and 1-20 parts additive.

[0060] In some specific embodiments, the solvent includes deionized water. Water as a solvent is environmentally friendly and health-promoting. In other embodiments, no solvent is required. The addition of a solvent can better form the nanoscale functional layer 12, specifically, controlling the thickness of the functional layer 12 within the range of 5 μm to 25 μm. Furthermore, the solvent allows the stabilizer to form a well-dispersed sol, such as silica sol or aluminum sol, within the coating raw materials, facilitating the formation of a uniformly composed functional layer 12 during the film-forming process.

[0061] The film-forming agent is used to solidify and form a stable, highly dense film structure, thereby achieving the insulation and encapsulation functions of the ceramic-like metal component 1. The film-forming agent may specifically include an epoxy resin. In a preferred embodiment, the film-forming agent includes a water-based epoxy resin, in conjunction with water as the solvent.

[0062] In some particularly preferred embodiments, the film-forming agent further comprises at least one of the following components in parts by weight: 1-10 parts of polyimide resin, 1-10 parts of alkyd resin, or 1-10 parts of phosphate.

[0063] The stabilizer is used to improve the stability, appearance, and hardness of the final functional layer 12. The stabilizer includes at least one of silicon, aluminum, or titanium; and / or the stabilizer includes a nitride and / or oxide of at least one of silicon, aluminum, or titanium. Further preferably, the stabilizer includes at least one of the following components in parts by weight: 10-25 parts silicon or 10-25 parts aluminum. The average particle size of the stabilizer is 0.1-1 μm; for example, 0.1 μm, 0.3 μm, 0.6 μm, 0.9 μm, or 1 μm. Silicon, aluminum, titanium, or their nitrides or oxides are added to hybridize and crosslink with epoxy resins, forming a dense network structure on the surface of the metal substrate 11 through bonding between elements such as silicon, aluminum, and oxygen, thereby forming the functional layer 12. This functional layer 12 has excellent high-temperature resistance, resistance to thermal shock, good thermal shock resistance, and resistance to high-temperature corrosion. It is understood that the stabilizer is also the source of the ceramic component in the functional layer 12. The ceramic component with extremely high stability can improve the stability and hardness of the functional layer 12 while also having the appearance characteristics of ceramics.

[0064] The pigment primarily serves as a colorant, i.e., a toner. The pigment includes titanium dioxide and / or titanium. The average particle size of the pigment is 0.01-0.5 μm, such as 0.01 μm, 0.1 μm, 0.2 μm, 0.3 μm, 0.4 μm, or 0.5 μm. It is understood that titanium dioxide can be added directly to the raw materials as a pigment. Alternatively, titanium powder can be used, which is converted into titanium dioxide during the high-temperature curing process.

[0065] The additives include at least one of the following components by weight: 1-10 parts curing agent, 1-5 parts leveling agent, or 1-5 parts dispersant. The curing agent reacts with the film-forming agent to form the functional layer 12; curing agents include fatty amines, alicyclic amines, or polyamides. The dispersant can be a common dispersant, such as sodium lauryl sulfate. Leveling agents include acrylic and silicone types.

[0066] After the above-mentioned coating slurry is mixed, the thickness of the functional layer 12 can be controlled by controlling the number of spraying, speed, discharge rate of the spray gun nozzle, etc. to achieve the desired thickness of the functional layer 12 of 5μm-25μm; for example, 5μm, 10μm, 15μm, 20μm or 25μm, etc.

[0067] In one embodiment, the coating can be sprayed onto the surface of the metal substrate 11, and then dried and cured. The drying and curing temperature is 150-300°C, preferably 200-300°C. Specifically, during the film-forming process of the coating on the metal substrate 11, as the drying and curing temperature rises, the solvent in the coating evaporates, the epoxy resin undergoes oxidative polymerization, and reacts with the curing agent to form a film. At 150-300°C, a staggered network structure with a certain degree of cured strength is formed.

[0068] Among them, the functional layer 12 is attached to the surface of the metal substrate 11 to form a ceramic-like metal part 1. Without changing the function of the original ceramic tube, the ceramic-like metal part 1 has low production cost, high strength, and high temperature resistance. The surface of the ceramic-like metal part 1 has good wear resistance, low surface energy, good chemical corrosion resistance, good thermal conductivity, good insulation, and high safety.

[0069] It has been verified that the surface energy of the functional layer 12 obtained in the above embodiment, which is on the side away from the metal substrate 11, is greater than or equal to 1.5×10 -2 N / m and less than or equal to 1.9×10 -2 N / m; for example, 1.6×10 -2 N / m, 1.7×10 -2 N / m or 1.8×10 -2 The surface of the functional layer 12 has an extremely low surface energy, making it extremely difficult for other substances (such as stains or adhesions) to adhere to the surface of the functional layer 12. This makes the functional layer 12 oleophobic, hydrophobic (water droplet contact angle is 110 degrees), non-stick, and anti-fouling (stains and adhesions are extremely easy to clean). This effectively reduces the adhesion of the atomized medium to the surface of the functional layer 12, improves the utilization rate of the atomized medium, and enhances the consumer experience.

[0070] The thermal conductivity of the functional layer 12 is greater than or equal to 16 W / (m·K) and less than or equal to 22 W / (m·K); for example, the thermal conductivity of the functional layer 12 is 16 W / (m·K), 20 W / (m·K), or 22 W / (m·K). The functional layer 12 has good thermal conductivity.

[0071] The volume resistivity of the functional layer 12 is greater than 10 17 Ω·cm, the arc resistance of the functional layer 12 is greater than 300s; the functional layer 12 has excellent electrical insulation performance and good arc resistance.

[0072] The hardness of the functional layer 12 is greater than 8H. The functional layer 12 has excellent adhesion to the metal substrate 11, and in a 100-grid test, the 100-grid test reaches level 0.

[0073] Because the functional component element in the functional layer 12 is at least one of aluminum, silicon, or titanium, the safety risk of directly immersing the metal product in an atomized medium such as sesame oil is greatly reduced, and the imitation ceramic metal part 1 is highly safe. It has excellent chemical corrosion resistance, acid and alkali resistance, solvent resistance, and salt water boiling resistance.

[0074] Specifically, the surface roughness of the metal substrate 11 ranges from 0.5 to 1.5 μm. For example, the surface roughness of the metal substrate 11 can be 0.5 μm, 0.8 μm, 1.1 μm, 1.5 μm, etc. A surface roughness that is too low will hinder the adhesion of the functional layer 12, while a surface roughness that is too high will affect the functionality of the functional layer 12 after adhesion.

[0075] The surface roughness of the metal substrate 11 can be controlled by sandblasting. The particle size of the high-speed hard particles used in the sandblasting process is controlled within the range of 80-180 mesh, for example, 80 mesh, 100 mesh, 120 mesh, 140 mesh, 160 mesh, or 180 mesh. Specifically, the particles include at least one or more of silicon dioxide particles, silicon nitride particles, and silicon carbide particles.

[0076] Of course, the atomizer 10 also includes components such as an atomizer core and a filter. The specific structures and functions of these components are the same or similar to the specific structures and functions of the relevant components in the existing atomizer, and can achieve the same or similar technical effects. For details, please refer to the existing technology.

[0077] The atomizer 10 provided in this embodiment includes a ceramic-like metal component 1, which includes a metal substrate 11 and a functional layer 12 formed on the surface of the metal substrate 11. This allows the functional layer 12 to include a ceramic component, depending on actual needs, to function as a ceramic component. Furthermore, because the metal substrate 11 is located within the ceramic-like metal component 1, production costs can be significantly reduced compared to a pure ceramic structure. Furthermore, the atomizer 10 combines the corrosion resistance and safety characteristics of ceramics with the excellent thermal shock resistance and mechanical properties of metals.

[0078] In one embodiment of the present application, referring to FIG6 , FIG6 is a simplified structural diagram of an electronic atomization device provided in one embodiment of the present application. An electronic atomization device is also provided, comprising a main unit 20 and an atomizer 10. The atomizer 10 is the atomizer 10 provided in the above embodiment. Its specific structure and function can be found in the above-mentioned related description and will not be further described here. The main unit 20 is electrically connected to the atomizer 10 for supplying power to the atomizer 10.

[0079] In another embodiment of the present application, referring to FIG. 7 , FIG. 7 is a flow chart of a method for preparing a ceramic-like metal part according to an embodiment of the present application; a method for preparing a ceramic-like metal part 1 is provided, which can be used only to prepare the ceramic-like metal part 1 involved in the above embodiment. The method specifically includes:

[0080] Step S1: performing a roughening treatment on the surface of the metal substrate so that the surface roughness of the metal substrate is 0.5-1.5 μm.

[0081] In a specific embodiment, the process for roughening the surface of the metal substrate 11 is a sandblasting process. The particulate matter can be high-speed hard particles. The use of high-speed hard particles on the surface of the metal substrate 11 can not only improve the surface roughness of the metal substrate 11, but also increase the adhesion of the particulate matter on the surface of the metal substrate 11. Since the particle size of the high-speed hard particles is too large or too small, the surface adhesion of the metal substrate 11 will be reduced; therefore, the particle size of the high-speed hard particles is controlled within the range of 80-180 mesh, for example, it can be 80, 100, 120, 140, 160, 180, etc. Specifically, the particulate matter includes at least one or more of silicon dioxide particles, silicon nitride particles, and silicon carbide particles.

[0082] Specifically, the surface roughness of the metal substrate 11 ranges from 0.5 to 1.5 μm. For example, the surface roughness of the metal substrate 11 can be 0.5 μm, 0.8 μm, 1.1 μm, 1.5 μm, etc. A surface roughness that is too low will hinder the adhesion of the functional layer 12, while a surface roughness that is too high will affect the functionality of the functional layer 12 after adhesion.

[0083] Step S2: spraying paint on the surface of the roughened metal substrate.

[0084] In the production process of a specific embodiment, the coating includes a solvent, a film former, a stabilizer, a colorant, and an additive. The coating includes the following components by weight: 20-40 parts solvent, 10-50 parts film former, 20-50 parts stabilizer, 10-20 parts colorant, and 1-20 parts additive. The solvent includes deionized water. The film former is used to solidify and form a stable, highly dense film layer structure, thereby achieving the insulation and encapsulation functions of the ceramic-like metal component 1. The film former specifically includes an epoxy resin; preferably, the film former includes a water-based epoxy resin. Particularly preferably, the film former also includes at least one of the following components by weight: 1-10 parts polyimide resin, 1-10 parts alkyd resin, or 1-10 parts phosphate. The stabilizer is used to enhance the stability of the resulting functional layer 12; the stabilizer includes at least one of silicon, aluminum, or titanium; and / or the stabilizer includes a nitride and / or oxide of at least one of silicon, aluminum, or titanium. More preferably, the stabilizer comprises at least one of the following components by weight: 10-25 parts silicon or 10-25 parts aluminum. The average particle size of the stabilizer is 0.1-1 μm, for example, 0.1 μm, 0.3 μm, 0.6 μm, 0.9 μm, or 1 μm. The colorant primarily functions as a colorant, i.e., to adjust the color; the colorant comprises titanium dioxide and / or titanium. The average particle size of the colorant can be 0.01-0.5 μm, for example, 0.01 μm, 0.1 μm, 0.2 μm, 0.3 μm, 0.4 μm, or 0.5 μm. The auxiliary agent comprises at least one of the following components by weight: 1-10 parts curing agent, 1-5 parts leveling agent, or 1-5 parts dispersant. The curing agent is used to react with the film-forming agent to form the functional layer 12; the curing agent comprises a fatty amine, alicyclic amine, or polyamide. The dispersant can be a common dispersant, such as sodium lauryl sulfate. Leveling agents include acrylics and silicones. The thickness of the functional layer 12 can be controlled by controlling the spraying times, speed, and discharge rate of the spray gun.

[0085] Step S3: curing the coating to form a functional layer; wherein the curing temperature is 150-300°C.

[0086] In the production process of a specific embodiment, the coating can be sprayed onto the surface of the metal substrate 11; the coating is then dried and cured. The drying and curing temperature is 150-300°C, preferably 200-300°C. Specifically, as the coating is cured and formed into a film on the surface of the metal substrate 11, as the drying and curing temperature rises, the solvent in the coating evaporates, the epoxy resin undergoes oxidative polymerization, and reacts with the curing agent to form a film. At 150-300°C, a staggered network structure with a certain degree of cured strength is formed.

[0087] The method for preparing a ceramic-like metal part 1 provided in this embodiment comprises providing a metal substrate 11; then roughening the surface of the metal substrate 11 to a surface roughness of 0.5-1.5 μm; and then forming a functional layer 12 on the surface of the metal substrate 11 to obtain the ceramic-like metal part 1. This method not only allows the formation of a ceramic functional layer 12 on the surface of the metal substrate 11 according to actual needs, thereby functioning as a ceramic part, but also significantly reduces production costs because the metal substrate 11 is contained within the ceramic-like metal part 1, compared to a purely ceramic structure.

[0088] In other optional embodiments, a solid powder spraying process can also be used. That is, the coating raw materials, excluding the solvent, are prepared into a powder, which is then sprayed onto the surface of the metal substrate 11. The coating is then cured to form the functional layer 12. The average particle size of the powder can be 20-50 μm, for example, 20 μm, 30 μm, 40 μm, or 50 μm. Other process parameters are consistent with those described above and are not repeated here.

[0089] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An atomizer, wherein: include: A ceramic-like metal part comprises a metal substrate and a functional layer formed on the surface of the metal substrate.

2. The atomizer according to claim 1, wherein: The roughness of the surface of the metal substrate facing the functional layer is 0.5-1.5 μm.

3. The atomizer according to claim 1, wherein: The thickness of the functional layer is 5 μm-25 μm.

4. The atomizer according to claim 1, wherein: The metal substrate is a stainless steel substrate; The functional layer comprises a film former, a stabilizer and a colorant.

5. The atomizer according to claim 4, wherein: The functional layer is obtained by spraying and curing the coating; wherein the coating comprises a solvent, a film former, a stabilizer, a colorant and an auxiliary agent; Preferably, the coating comprises the following components in parts by weight: 20-40 parts of solvent, 10-50 parts of film former, 20-50 parts of stabilizer, 10-20 parts of colorant and 1-20 parts of auxiliary agent; Preferably, the auxiliary agent includes at least one of the following components in parts by weight: 1-10 parts of a curing agent, 1-5 parts of a leveling agent or 1-5 parts of a dispersant; Preferably, the film-forming agent includes epoxy resin; further preferably, the film-forming agent includes water-based epoxy resin; particularly preferably, the film-forming agent further includes at least one of the following components in parts by weight: 1-10 parts of polyimide resin, 1-10 parts of alkyd resin or 1-10 parts of phosphate; Preferably, the solvent comprises deionized water; Preferably, the stabilizer comprises at least one of silicon, aluminum or titanium; and / or, the stabilizer comprises a nitride and / or oxide of at least one of silicon, aluminum or titanium; Further preferably, the stabilizer comprises at least one of the following components in parts by weight: 10-25 parts of silicon or 10-25 parts of aluminum; Preferably, the colorant agent comprises titanium dioxide and / or titanium; Preferably, the average particle size of the colorant is 0.01-0.5um; Preferably, the average particle size of the stabilizer is 0.1-1 um.

6. The atomizer according to claim 1, wherein: The ceramic-like metal part meets at least one of the following conditions: The hardness of the functional layer is greater than 8H; The roughness of the surface of the functional layer facing away from the metal substrate is 0.2-0.3 um; The surface energy of the functional layer on the side away from the metal substrate is greater than or equal to 1.5×10 -2 N / m and less than or equal to 1.9×10 -2 N / m; The thermal conductivity of the functional layer is greater than or equal to 16w / (m·k) and less than or equal to 22w / (m·k); The volume resistivity of the functional layer is greater than 10 17 Ω·cm, and the arc resistance of the functional layer is greater than 300s.

7. The atomizer according to claim 1, wherein: The atomizer further comprises a shell, the imitation ceramic metal part cooperates with the shell to form a liquid storage cavity, and the liquid storage cavity is used to store atomizing medium; the functional layer faces the liquid storage cavity.

8. An electronic atomization device, wherein: Comprising an atomizer as described in any one of claims 1-7.

9. A method for preparing a ceramic-like metal part, wherein: include: Roughening the surface of the metal substrate so that the surface roughness of the metal substrate is 0.5-1.5 μm; Spray coating on the surface of the roughened metal substrate; Curing the coating to form the functional layer; wherein the curing temperature is 150-300° C.; Preferably, the process for roughening the surface of the metal substrate is a sandblasting process; preferably, the particle size of the sandblasting in the sandblasting process is 80 meshes to 180 meshes.

10. The preparation method according to claim 9, wherein: The coating comprises a solvent, a film former, a stabilizer, a colorant and an auxiliary agent; Preferably, the coating comprises the following components in parts by weight: 20-40 parts of solvent, 10-50 parts of film former, 20-50 parts of stabilizer, 10-20 parts of colorant and 1-20 parts of auxiliary agent; Preferably, the auxiliary agent comprises at least one of the following components by weight: 1-10 parts of curing agent, 1-5 parts of leveling agent or 1-5 parts of dispersant; Preferably, the film-forming agent includes epoxy resin; further preferably, the film-forming agent includes water-based epoxy resin; particularly preferably, the film-forming agent further includes at least one of the following components in parts by weight: 1-10 parts of polyimide resin, 1-10 parts of alkyd resin or 1-10 parts of phosphate; Preferably, the solvent comprises deionized water; Preferably, the stabilizer comprises at least one of silicon, aluminum or titanium; and / or, the stabilizer comprises a nitride and / or oxide of at least one of silicon, aluminum or titanium; Further preferably, the stabilizer comprises at least one of the following components in parts by weight: 10-25 parts of silicon or 10-25 parts of aluminum; Preferably, the colorant agent comprises titanium dioxide and / or titanium; Preferably, the average particle size of the colorant is 0.01-0.5um; Preferably, the average particle size of the stabilizer is 0.1-1 um.

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