Coating of laminated structure with ceramic skeleton filled with sheet metal and method for its production

Abstract

The application discloses a preparation method of a laminated structure coating filled with sheet metal in a ceramic framework, and comprises the following steps: (1) polishing the surface of carbon steel and then carrying out carburizing; (2) depositing a metal layer with carbide forming ability on the surface of the carbon steel with the carburized layer, and alternately depositing a sheet iron layer and the metal layer with carbide forming ability on the surface of the carbon steel by using a mask plate in a film layer preparation technology; and (3) carrying out carburizing on the carbon steel with the metal multilayer structure coating on the surface, and forming the laminated structure coating filled with the sheet iron layer in the ceramic framework on the surface of the carbon steel through the above treatment, wherein the coating ceramic phase has a high volume fraction and is dense and pore-free, the interface between layers has a micro-irregular shape and has metallurgical bonding, and the material strength, toughness and shear resistance are significantly improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of surface modification method of metal material, and relates to a ceramic framework filled with sheet metal in a carbon steel surface, and also relates to a preparation method of the ceramic framework filled with sheet metal in a carbon steel surface. BACKGROUND

[0002] At present, the preparation of ceramic / metal multilayer film on the surface of carbon steel is an effective method to improve the surface strength and toughness. The multilayer film is formed by alternating arrangement of hard ceramic layer and metal layer with good plasticity and toughness. However, the structure of the metal layer isolating the ceramic layer restricts its shear resistance.

[0003] At present, the preparation technology of ceramic / metal multilayer film mainly includes physical vapor deposition (PVD) and chemical vapor deposition (CVD). The physical vapor deposition technology has the advantages of accurate control of film thickness and composition, wide application range, environmental friendliness, etc. However, the chemical vapor deposition has the advantages of high deposition rate, good plating property, controllable film composition, etc. However, the ceramic / metal multilayer film prepared by PVD and CVD technology generally lacks obvious element interdiffusion at the interface and film base interface, thereby restricting the bonding strength of the interface and limiting the further improvement of the surface comprehensive mechanical properties.

[0004] In summary, from the structure of the ceramic / metal multilayer film, the structure feature of the metal layer isolating the ceramic layer restricts its shear resistance; from the preparation method of the ceramic / metal multilayer film, the interface bonding strength of the multilayer film is poor, which restricts the further improvement of the mechanical properties of the multilayer film. In view of the above problems, the present application designs a stacked structure coating with high strength ceramic framework and containing sheet-shaped ductile metal, and proposes a preparation method combining physical vapor deposition and carburizing, to finally obtain a thin film with high strength and toughness and good shear resistance. SUMMARY

[0005] The present application aims to provide a ceramic framework filled with sheet metal in a carbon steel surface, to solve the problem of poor shear resistance caused by the isolation of the ceramic layer by the metal layer in the existing ceramic / metal multilayer film technology. On the other hand, the present application aims to provide a preparation method of the ceramic framework filled with sheet metal in a carbon steel surface, to solve the problem of low interface bonding strength of the multilayer film in the prior art.

[0006] The technical scheme of the present application is that the carbon steel surface has a coating with ceramic phase as the framework and the ceramic framework gap filled with sheet iron layer.

[0007] The technical scheme of the preparation method of the ceramic framework filled with sheet metal in a carbon steel surface is implemented according to the following steps:

[0008] Step 1: polishing the surface of carbon steel and then performing first carburizing treatment to obtain carbon steel with carburized layer;

[0009] Step 2: depositing a metal layer with carbide-forming ability on the surface of the carbon steel with carburized layer by using a film layer preparation process;

[0010] Step 3: placing a deposition mold on the metal layer formed in Step 2, depositing a flaky iron layer by using the deposition mold through the film layer preparation process, removing the deposition mold to obtain the flaky iron layer, and then depositing a metal layer with carbide-forming ability on the flaky iron layer again by using the film layer preparation process, repeating the above operations, and depositing the flaky iron layer and the metal layer with carbide-forming ability multiple times to form a coating layer with the metal layer with carbide-forming ability as a skeleton and filled with the flaky iron layer on the surface of the carbon steel;

[0011] Step 4: placing the coating layer formed in Step 3 into a carburizing furnace for second carburizing treatment to obtain a coating layer with a ceramic skeleton filled with flaky metal in a laminated structure.

[0012] The application also features that the first carburizing treatment in Step 1 is one of solid carburizing, gas carburizing, vacuum carburizing, and plasma carburizing, and the temperature range of the first carburizing treatment is 800-1000℃;

[0013] The thickness L of the carburized layer in Step 1 ranges from 10μm to 200μm;

[0014] The deposition thickness of the metal layer with carbide-forming ability in Step 2 ranges from 5μm to 50μm;

[0015] The film layer preparation process in Step 2 and Step 3 is one of physical vapor deposition, chemical vapor deposition, and spraying, and the metal with carbide-forming ability in Step 2 and Step 3 is a metal composed of any one of W, Mo, Cr, Ta, Nb, Ti, Zr, and V;

[0016] The step 3 is specifically implemented as follows: a deposition mold is placed on the metal layer formed in the step 2, the deposition mold comprises a first mask plate and a second mask plate, the first mask plate is distributed in a staggered manner with the second mask plate, a sheet iron layer is deposited on the film layer by using the first mask plate through a film layer preparation process, the first mask plate is removed to obtain the sheet iron layer, a metal layer with carbide forming ability is formed on the sheet iron layer again by using the film layer preparation process, a sheet iron layer is deposited again by using the second mask plate through the film layer preparation process, the second mask plate is removed to obtain the sheet iron layer, a metal layer with carbide forming ability is formed on the sheet iron layer again by using the film layer preparation process, and the above operations are repeated to deposit the sheet iron layer and the metal layer with carbide forming ability multiple times to form a coating with a metal layer with carbide forming ability as a skeleton and filled with sheet iron layers on the surface of the carbon steel.

[0017] The hole size (diameter of a circular hole, side length of a square hole or hexagonal hole) of the deposition mold in the step 3 is 20 μm-100 μm, the thickness of the sheet iron layer ranges from 1 μm to 30 μm, and the number of layers of the sheet iron layer ranges from 2 to 10; the metal layer with carbide forming ability is selected from the same material as that in the step 2, and the thickness of a single layer ranges from 3 μm to 50 μm. The thicknesses of the sheet iron layer and the metal layer with carbide forming ability are independently controlled, and the number of layers of the sheet iron layer and the metal layer with carbide forming ability is the same.

[0018] The sheet iron layer in the step 3 comprises a pure iron layer with a carbon content less than 0.0218 wt% and a carbon steel layer with a carbon content ranging from 0.0218 wt% to 2.0 wt%.

[0019] The carburizing treatment in the step 4 adopts one of solid carburizing, gas carburizing, vacuum carburizing, plasma carburizing and interstitial atom carburizing, and the carburizing temperature ranges from 900 ℃ to 1200 ℃.

[0020] The present application has the following beneficial effects:

[0021] (1) In the coating with a ceramic phase as a skeleton and filled with sheet iron layers, the ceramic skeleton has high hardness, strength and rigidity, and the sheet iron layers are beneficial to improve the toughness of the coating, so that the coating has the characteristics of strong toughness and good shear resistance;

[0022] (2) In the high-temperature process, the elements at the layer interfaces diffuse with each other to form a high-strength layer interface with metallurgical bonding. The interface between the ceramic layer and the sheet metal layer is irregular in shape, and compared with a flat interface, the irregular interface can more effectively enhance the toughness of the material;

[0023] (3) The carbides are precipitated in situ, so that the grain boundary strength is high, the iron element is dissolved in the carbide ceramic phase, so that the growth rate is faster, and the toughness is better;

[0024] (4) Since the solid solubility of carbon in iron is high, the flaky iron layer can effectively promote the continuous diffusion of carbon inward, and also can act as a carbon source to promote the formation of carbide ceramic phase. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of the thickness of the carburized layer in the preparation method of the ceramic skeleton filled with flaky metal laminated structure coating of the application;

[0026] Figure 2 is a schematic diagram of the cross-sectional structure of the deposition of the metal layer with carbide formation ability on the surface of the carbon steel with the carburized layer in step 2 of the preparation method of the ceramic skeleton filled with flaky metal laminated structure coating of the application;

[0027] Figure 3 is a schematic diagram of the structure of the square mask plate in embodiment 2 of the preparation method of the ceramic skeleton filled with flaky metal laminated structure coating of the application;

[0028] Figure 4 is a schematic diagram of the structure of the circular mask plate in embodiment 3 of the preparation method of the ceramic skeleton filled with flaky metal laminated structure coating of the application;

[0029] Figure 5 is a schematic diagram of the structure of the hexagonal mask plate in embodiment 4 of the preparation method of the ceramic skeleton filled with flaky metal laminated structure coating of the application;

[0030] Figure 6 is a schematic diagram of the cross-sectional structure of the deposition of the flaky iron layer using the mask plate in the ceramic skeleton filled with flaky metal laminated structure coating of the application;

[0031] Figure 7 is a schematic diagram of the deposition of the metal layer with carbide formation ability after removing the mask plate in the ceramic skeleton filled with flaky metal laminated structure coating of the application;

[0032] Figure 8 is a schematic diagram of the structure of the flaky iron layer filled in the ceramic skeleton in the ceramic skeleton filled with flaky metal laminated structure coating of the application; DETAILED DESCRIPTION

[0033] The application will be described in detail below in conjunction with the drawings and specific embodiments.

[0034] The application relates to a preparation method of a ceramic skeleton filled with flaky metal laminated structure coating, as shown in the accompanying drawings, and is specifically implemented according to the following steps: Figures 1-8

[0035] ​Step 1: polishing the surface of carbon steel, carrying out the first carburizing treatment to obtain carbon steel with carburized layer, the thickness L of the carburized layer ranges from 10 μm to 200 μm, the carbon content ranges from 0.8wt% to 2.0wt%, the first carburizing treatment is one of solid carburizing, gas carburizing, vacuum carburizing, and plasma carburizing, and the temperature ranges from 800°C to 1000°C, preferably, gas carburizing is selected;

[0036] Step 2: depositing a metal layer with carbide-forming ability on the surface of the carbon steel with the carburized layer by a film layer preparation process, the film layer preparation process includes one of physical vapor deposition, chemical vapor deposition, and spraying, the metal layer with carbide-forming ability has a deposition thickness of 5-50 μm, and any one of W, Mo, Cr, Ta, Nb, Ti, Zr, and V can be selected to form the metal layer with carbide-forming ability, preferably, magnetron sputtering is selected;

[0037] Step 3: placing a deposition mold on the metal layer formed in Step 2, the deposition mold includes a first mask plate and a second mask plate, the first mask plate and the second mask plate are distributed in a staggered manner, a sheet iron layer is deposited by using the first mask plate through the film layer preparation process, the first mask plate is removed to obtain the sheet iron layer, the sheet iron layer is deposited again to form the metal layer with carbide-forming ability by using the film layer preparation process, the second mask plate is used to deposit the sheet iron layer by using the film layer preparation process, the second mask plate is removed to obtain the sheet iron layer, the sheet iron layer is deposited again to form the metal layer with carbide-forming ability by using the film layer preparation process, and the above operations are repeated to deposit the sheet iron layer and the metal layer with carbide-forming ability multiple times to form a coating layer with the metal layer with carbide-forming ability as a skeleton and filled with the sheet iron layer on the surface of the carbon steel. The hole size (the diameter of a circular hole, the side length of a square hole or a hexagonal hole) of the first mask plate and the second mask plate ranges from 20 μm to 100 μm, the thickness of the sheet iron layer ranges from 1 μm to 30 μm, and the number of layers ranges from 2 to 10 layers; the metal layer with carbide-forming ability is selected from the same material as in Step 2, and the thickness of a single layer ranges from 3 μm to 50 μm. The thickness of each layer in Step 3 is independently controlled, and the number of layers of the sheet iron layer and the metal layer with carbide-forming ability is the same. The film layer preparation process includes one of physical vapor deposition, chemical vapor deposition, and spraying;

[0038] Step 4: placing the coating layer formed in Step 3 into a carburizing furnace to carry out the second carburizing treatment to obtain a coating layer with a ceramic skeleton filled with a sheet metal. The second carburizing treatment is one of solid carburizing, gas carburizing, vacuum carburizing, plasma carburizing, and interstitial atom carburizing, the second carburizing temperature ranges from 900°C to 1200°C, and preferably, vacuum carburizing is selected.

[0039] In the preparation method of the ceramic skeleton filled with sheet metal laminated structure coating of the present application: in step 1, the effect of carburizing is to increase the carbon content of the surface layer of carbon steel. Therefore, in the carburizing process of step 4, not only the external carbon atoms diffuse into the laminated structure coating (i.e. carburizing inward), but also the carbon atoms of the surface layer of the carbon steel substrate diffuse into the laminated structure coating (i.e. outward diffusion). Thus, the effect of bidirectional carburizing is achieved, which not only effectively increases the thickness of the carburized layer, but also refines the carbide grains.

[0040] In the preparation method of the ceramic skeleton filled with sheet metal laminated structure coating of the present application: in step 3, the sheet iron layer formed by the misregistration of the first mask plate and the second mask plate has the effect of forming a three-dimensional skeleton in the ceramic phase of the laminated structure coating, improving the surface rigidity and shear resistance. The principle is: with the misregistration deposition of the sheet iron layer, the metal layers with carbide forming ability are connected, and after carburizing, a ceramic skeleton is formed, the sheet iron layer fills the skeleton gap, and forms diffusion bonding with the ceramic skeleton, so the design of the structure with ceramic phase as the skeleton filled with sheet iron layer is a feasible scheme.

[0041] In the preparation method of the ceramic skeleton filled with sheet metal laminated structure coating of the present application: in step 4, the role of the sheet iron layer in the carburizing process is to store and release carbon atoms, which helps to promote the continuous inward diffusion of carbon atoms, helps to improve the carburizing rate, can withstand high carburizing temperature, and the iron layer is still a metal layer after carburizing.

[0042] In the preparation method of the ceramic skeleton filled with sheet metal laminated structure coating of the present application: the role of step 4 can be divided into three aspects: first, converting the metal layer with carbide forming ability into a ceramic layer; second, promoting the mutual diffusion of elements at the interface between the layers to form an interface with metallurgical bonding; third, forming carbides in situ, which have high grain boundary bonding strength and high density, and can avoid the formation of columnar crystal structure. At the same time, when the carbides precipitate in the mutual diffusion area, a micro-irregular interlayer interface is formed, which can more effectively enhance the toughness of the coating compared to a flat interface.

[0043] Example 1

[0044] The laminated structure coating of the present application filled with sheet metal in the ceramic skeleton comprises a ceramic phase multilayer structure skeleton and a sheet iron layer, and the ceramic phase skeleton is filled with a sheet iron layer.

[0045] Example 2

[0046] The preparation method of the laminated structure coating of the present application filled with sheet metal in the ceramic skeleton is specifically implemented according to the following steps:

[0047] Step 1: polish the surface of carbon steel, perform the first carburizing treatment, and obtain carbon steel with a carburized layer;

[0048] The first carburizing treatment in step 1 is vacuum carburizing, the temperature range of the first carburizing treatment is 800℃, the first carburizing time is 40h, the carburized layer thickness L of the carbon steel with a carburized layer in step 1 is 10μm, and the carbon content is 0.8wt%;

[0049] Step 2: depositing a metal layer with carbide-forming ability on the surface of the carbon steel with a carburized layer by using a film layer preparation process;

[0050] The metal with carbide-forming ability in step 2 is Ti, the film layer preparation process is chemical vapor deposition, and the thickness is 5μm;

[0051] Step 3: placing a deposition mold on the metal layer formed in step 2, depositing a sheet iron layer by using the deposition mold through a film layer preparation process, using a first mask plate for the deposition mold, removing the first mask plate to obtain the sheet iron layer, and depositing a metal layer with carbide-forming ability on the sheet iron layer again by using a film layer preparation process, so as to form a coating layer with the metal layer with carbide-forming ability as a skeleton and filling the sheet iron layer on the surface of the carbon steel

[0052] The aperture size of the first mask plate in step 3 is 20μm, the film layer preparation process uses chemical vapor deposition, the single-layer thickness of the metal layer with carbide-forming ability is 3μm, the number of layers is 1, the metal layer with carbide-forming ability is Ti, and the sheet iron layer is pure iron, the thickness is 1μm, and the number of layers is 1;

[0053] Step 4: placing the coating layer with the ceramic skeleton and filling the sheet iron layer in the carbon steel surface obtained in step 3 into a carburizing furnace for a second carburizing treatment, so as to obtain a carbon steel surface with a ceramic skeleton and filling a sheet metal layer structure material;

[0054] The second carburizing treatment in step 4 is vacuum carburizing, the carburizing treatment temperature range is 900℃, and the second carburizing time is 40h.

[0055] Embodiment 3

[0056] The preparation method of the ceramic skeleton and filling sheet metal layer structure coating in this embodiment is specifically implemented according to the following steps:

[0057] Step 1: polishing the surface of the carbon steel and performing a first carburizing treatment to obtain a carbon steel with a carburized layer;

[0058] The first carburizing treatment in step 1 is gas carburizing, the temperature of the first carburizing treatment is 900℃, the first carburizing time is 10h, the carburized layer thickness L of the carbon steel with a carburized layer in step 1 is 50μm, and the carbon content is 1.2wt%;

[0059] Step 2: depositing a metal layer with carbide-forming ability on the surface of the carbon steel with the carburized layer by using a film layer preparation process;

[0060] The metal with carbide-forming ability in Step 2 is Zr, the film layer preparation process is physical vapor deposition, and the thickness is 10 μm;

[0061] A deposition mold is placed on the metal layer formed in Step 2, the deposition mold includes a first mask plate and a second mask plate, the first mask plate and the second mask plate are distributed in staggered positions, a sheet iron layer is deposited by using the first mask plate through the film layer preparation process, the first mask plate is removed to obtain the sheet iron layer, a metal layer with carbide-forming ability is formed on the sheet iron layer again by using the film layer preparation process, a sheet iron layer is deposited again by using the second mask plate through the film layer preparation process, the second mask plate is removed to obtain the sheet iron layer, a metal layer with carbide-forming ability is formed on the sheet iron layer again by using the film layer preparation process, and the above operations are repeated to deposit the sheet iron layer and the metal layer with carbide-forming ability multiple times, the sheet iron layer fills the skeleton gap to form a coating layer on the surface of the carbon steel, the coating layer has a skeleton of the metal with carbide-forming ability and is filled with the sheet iron layer;

[0062] The aperture size of the first mask plate and the second mask plate in Step 3 is 50 μm, the film layer preparation process uses physical vapor deposition, the thickness of the single layer of the metal layer with carbide-forming ability is 8 μm, the number of layers is 6, the metal layer with carbide-forming ability is Zr, and the sheet iron layer is pure iron, the thickness is 1.5 μm, and the number of layers is 6;

[0063] Step 4: the coating layer with the laminated structure of the ceramic skeleton filled with the sheet iron layer on the surface of the carbon steel obtained in Step 3 is placed in a carburizing furnace for second carburizing treatment to obtain a material with the laminated structure of the ceramic skeleton filled with the sheet metal, the sheet iron layer formed by the first mask plate and the second mask plate in staggered positions is connected to the metal layer with carbide-forming ability, and the sheet iron layer and the ceramic skeleton promote the element mutual diffusion of the interface after the second carburizing to form an interface with metallurgical bonding;

[0064] The second carburizing treatment in Step 4 uses plasma carburizing, the carburizing treatment temperature ranges from 1000℃, and the second carburizing time is 6 h.

[0065] Embodiment 4

[0066] The preparation method of the laminated structure coating layer with the ceramic skeleton filled with the sheet metal in the embodiment is specifically implemented according to the following steps:

[0067] Step 1: polishing the surface of the carbon steel, performing first carburizing treatment, and obtaining the carbon steel with a carburized layer;

[0068] The first carburizing treatment in step 1 is solid carburizing, the temperature range of the first carburizing treatment is 1000℃, the first carburizing time is 5h, the carburized layer thickness L of the carbon steel with a carburized layer in step 1 is 200μm, and the carbon content is 2.0wt%;

[0069] Step 2: a metal layer with carbide forming ability is deposited on the surface of the carbon steel with a carburized layer by using a film layer preparation process;

[0070] The metal with carbide forming ability in step 2 is W, the film layer preparation process is thermal spraying, and the thickness is 50μm;

[0071] A deposition mold is placed on the metal layer formed in step 2, the deposition mold includes a first mask plate and a second mask plate, the first mask plate and the second mask plate are distributed in a staggered manner, a sheet iron layer is deposited by using the first mask plate through the film layer preparation process, the first mask plate is removed to obtain a sheet iron layer, a metal layer with carbide forming ability is deposited on the sheet iron layer again by using the film layer preparation process, the second mask plate is used to deposit a sheet iron layer by using the film layer preparation process, the second mask plate is removed to obtain a sheet iron layer, a metal layer with carbide forming ability is deposited on the sheet iron layer again by using the film layer preparation process, and the above operations are repeated to deposit the sheet iron layer and the metal layer with carbide forming ability multiple times to form a coating on the surface of the carbon steel, which has a metal layer with carbide forming ability as a skeleton and fills the sheet iron layer;

[0072] The aperture size of the first mask plate and the second mask plate in step 3 is 100μm, and the film layer preparation process uses thermal spraying. The single-layer thickness of the metal layer with carbide forming ability is 50μm, the number of layers is 10, the metal layer with carbide forming ability is selected from W, the sheet iron layer is carbon steel with a carbon content of 2.0wt%, the thickness is 30μm, and the number of layers is 10;

[0073] Step 4: the laminated structure coating with a ceramic skeleton filled with a sheet iron layer on the surface of the carbon steel obtained in step 3 is placed in a carburizing furnace for a second carburizing treatment to obtain a laminated structure material with a ceramic skeleton filled with a sheet metal on the surface of the carbon steel;

[0074] The second carburizing treatment in step 4 uses vacuum carburizing, the carburizing treatment temperature range is 1200℃, and the second carburizing time is 2h.

[0075] The laminated structure coating with a ceramic skeleton filled with a sheet metal prepared in this embodiment 2-4 is subjected to mechanical property testing, and the test results are as follows:

[0076] Item Fracture toughness Surface hardness Example 2 8.6 MPa-m 1 / 2 ]] 2300 HV Example 3 8.2 MPa-m 1 / 2 ]] 2400 HV Example 4 12.4 MPa-m 1 / 2 ]] 2000 HV

[0077] Through the above mode, the fracture toughness of the ceramic framework filled with the laminated structure coating of sheet metal exceeds 8MPa·m 1 / 2 , the surface hardness exceeds 2000HV, and the mechanical property is better; the coating of the application takes ceramic phase as the framework and fills sheet iron layer, the ceramic framework has high hardness, strength and rigidity, and the sheet iron layer is beneficial to improve the toughness of the coating, so that the coating has the characteristics of strong toughness and good shear resistance.

Claims

1. A method for producing a coating of a laminated structure of a ceramic skeleton filled with a sheet metal, characterized by, Specifically, the following steps are implemented: Step 1: After polishing the surface of the carbon steel, the first carburizing treatment is performed to obtain carbon steel with a carburized layer; Step 2: A metal layer with carbide-forming ability is deposited on the surface of the carbon steel with a carburized layer using a film layer preparation process; Step 3: A deposition mold is placed on the metal layer formed in step 2, and a sheet iron layer is deposited using the deposition mold through the film layer preparation process. The deposition mold is removed to obtain a sheet iron layer. A metal layer with carbide-forming ability is again deposited on the sheet iron layer using the film layer preparation process. The above operations are repeated multiple times to deposit sheet iron layers and metal layers with carbide-forming ability, forming a coating on the surface of the carbon steel with a skeleton of metal with carbide-forming ability and filling sheet iron layers; Step 4: The coating formed in step 3 is placed in a carburizing furnace for the second carburizing treatment to obtain a coating with a laminated structure of ceramic skeleton filled with sheet metal; The step 3 is specifically implemented as follows: A deposition mold is placed on the metal layer formed in step 2, and the deposition mold includes a first mask plate and a second mask plate. The pattern position of the first mask plate is distributed in a staggered manner with the pattern position of the second mask plate. A sheet iron layer is deposited using the first mask plate through the film layer preparation process. The first mask plate is removed to obtain a sheet iron layer. A metal layer with carbide-forming ability is again deposited on the sheet iron layer using the film layer preparation process. A sheet iron layer is then deposited using the second mask plate through the film layer preparation process. The second mask plate is removed to obtain a sheet iron layer. A metal layer with carbide-forming ability is again deposited on the sheet iron layer using the film layer preparation process. The above operations are repeated multiple times to deposit sheet iron layers and metal layers with carbide-forming ability, forming a coating on the surface of the carbon steel with a skeleton of metal with carbide-forming ability and filling sheet iron layers.

2. The method for preparing a laminated coating structure with sheet-like metal filling within a ceramic skeleton according to claim 1, characterized in that, The first carburizing treatment in step 1 is one of solid carburizing, gas carburizing, vacuum carburizing, and plasma carburizing. The temperature range of the first carburizing treatment is 800-1000°C, and the first carburizing time is 2-40h.

3. The method for preparing a laminated coating structure with sheet-like metal filling within a ceramic skeleton according to claim 1, characterized in that, The carburized layer thickness L of the carbon steel with a carburized layer in step 1 is in the range of 10-200μm, and the carbon content is 0.8%-2.0%.

4. The method for preparing a laminated coating structure with sheet-like metal filling within a ceramic skeleton according to claim 1, characterized in that, The deposition thickness of the metal layer with carbide-forming ability in step 2 is 5-50μm.

5. The method for preparing a laminated coating structure with sheet-like metal filling within a ceramic skeleton according to claim 1, characterized in that, The film layer preparation process in steps 2 and 3 is one of physical vapor deposition, chemical vapor deposition, and spraying. The metal with carbide-forming ability in steps 2 and 3 is a metal composed of any one of W, Mo, Cr, Ta, Nb, Ti, Zr, and V.

6. The method for preparing a laminated coating structure with sheet metal filling within a ceramic skeleton according to claim 1, characterized in that, The pore size of the deposition mold in step 3 is 20-100μm. The single-layer thickness of the metal layer with carbide-forming ability is in the range of 3-50μm, and the number of layers is in the range of 2-10 layers. The thickness of the sheet iron layer is in the range of 1-30μm, and the number of layers is in the range of 2-10 layers.

7. The method for preparing a laminated coating structure with sheet-like metal filling within a ceramic skeleton according to claim 1, characterized in that, The sheet iron layer in step 3 includes a pure sheet iron layer with a carbon content below 0.0218wt% and a carbon steel layer with a carbon content in the range of 0.0218wt%-2.0wt%.

8. The method for preparing a laminated coating structure with sheet-like metal filling within a ceramic skeleton according to claim 1, characterized in that, The second carburizing treatment in step 4 is performed by one of solid carburizing, gas carburizing, vacuum carburizing, plasma carburizing, interstitial atom carburizing, and has a temperature range of 900-1200 DEG C and a time range of 2-40 hours.

9. A coating of a stack structure of a ceramic backbone filled with a sheet metal, characterized by The ceramic skeleton filled with flaky metal laminated structure coating is prepared according to the preparation method of the ceramic skeleton filled with flaky metal laminated structure coating in any one of claims 1-8, and comprises a carburized layer, and the surface of the carburized layer has a coating with a ceramic phase as a skeleton and the ceramic skeleton filled with a flaky iron layer.

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