Method for preparing carbon-ceramic brake disc with adjustable properties

Abstract

The application relates to a brake disc preparation method, in particular to a carbon-toughened brake disc preparation method with adjustable performance, which solves the technical problems of low mechanical performance, poor toughness, uneven structure, unstable performance, long preparation period and large residual Si amount of the existing carbon-toughened brake disc. The method comprises the following steps: 1) adopting a reaction precursor to prepare an interface layer on a carbon fiber preform to obtain a carbon fiber preform with an interface layer; 2) introducing ceramic raw materials into the carbon fiber preform with the interface layer to obtain a carbon fiber preform with ceramic components with a density of 0.7-1.0 g / cm 3 3) introducing a carbon source into the carbon fiber preform with the ceramic components to obtain a carbon-carbon blank; 4) processing the carbon-carbon blank according to a numerical model to obtain a carbon-carbon brake disc; 5) reacting and infiltrating raw materials on the carbon-carbon brake disc to obtain a carbon-toughened brake disc with a density of 1.8-2.5 g / cm 3 3) introducing a carbon source into the carbon fiber preform with the ceramic components to obtain a carbon-carbon blank; 4) processing the carbon-carbon blank according to a numerical model to obtain a carbon-carbon brake disc; 5) reacting and infiltrating raw materials on the carbon-carbon brake disc to obtain a carbon-toughened brake disc with a density of 1.8-2.5 g / cm 3 The particle size of the raw materials is 1-100 mu m, and the amount is 1-3 times that of the carbon-carbon brake disc.

Description

Technical Field

[0001] This invention relates to a method for manufacturing a brake disc, specifically a method for manufacturing a carbon-ceramic brake disc with adjustable performance. Background Technology

[0002] Carbon-ceramic braking materials are composite materials with a special structure. In recent years, carbon-ceramic brake discs made from carbon-ceramic braking materials have been gradually applied in fields such as aircraft, high-speed rail, and automobiles. Carbon-ceramic braking materials consist of: a carbon fiber preform interface layer, dispersed ceramic powder, a continuous carbon matrix, and a ceramic phase obtained through reaction.

[0003] When carbon fibers are directly bonded to a ceramic matrix, severe chemical reactions occur, making it difficult to obtain an ideal carbon fiber preform interface layer. To enable carbon fibers to exert their reinforcing and toughening effects, a third phase is usually introduced as an interface layer between the carbon fibers and the ceramic matrix, thereby achieving better bonding. Therefore, the structural design, material selection, and preparation method of the interface layer directly affect the bonding between the carbon fibers and the ceramic matrix, and consequently, the performance of the composite material.

[0004] When carbon-ceramic brake discs are used in aircraft, high-speed trains, and automobiles, they often undergo high-speed continuous braking, causing the disc surface temperature to rise rapidly. This places more stringent demands on the high-temperature oxidation resistance and friction and wear resistance of carbon-ceramic brake discs. Traditional carbon-ceramic brake discs exhibit oxidation and significant wear after prolonged exposure to high temperatures. High-temperature ceramic powders are a class of materials specifically designed for use in ultra-high-temperature environments. They typically refer to carbides, nitrides, and borides of transition metals, possessing advantages such as high melting point, high thermal conductivity, moderate coefficient of thermal expansion, and excellent high-temperature oxidation and ablation resistance. Introducing high-temperature ceramic powders into carbon-ceramic brake materials can protect carbon fibers and improve the high-temperature oxidation resistance of carbon-ceramic brake materials. At the same time, due to the high density of high-temperature ceramic powders, their introduction can achieve a rapid densification effect.

[0005] Carbon fiber preforms require different processes to obtain the carbon matrix. During the preparation of the carbon matrix, it is necessary to rationally select the carbon source and a suitable preparation process to obtain a carbon matrix with uniform structure and high degree of graphitization, which lays a good foundation for subsequent ceramicization.

[0006] Reactive melt infiltration (RMI) is characterized by its short cycle time, low cost, and ability to achieve net-size molding. This process is a competitive industrial manufacturing technology. Its core involves infiltrating molten Si into a porous C / C matrix, causing a chemical reaction between Si and C to form SiC. However, it inevitably damages the carbon fibers, reducing their toughening effect and leading to decreased mechanical properties, reduced toughness, uneven microstructure, and unstable performance in the composite material. Furthermore, it has a long preparation cycle and results in a high residual Si content. Summary of the Invention

[0007] The purpose of this invention is to solve the technical problems of existing carbon ceramic brake discs, such as low mechanical properties, poor toughness, uneven microstructure, unstable performance, long preparation cycle, and large amount of residual Si, and to provide a carbon ceramic brake disc preparation method with adjustable performance.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A method for preparing a carbon-ceramic brake disc with adjustable performance, characterized by the following steps:

[0010] 1. An interface layer is prepared on the carbon fiber preform using a reactive precursor to obtain a carbon fiber preform with an interface layer.

[0011] 2) Introducing ceramic raw materials into carbon fiber preforms with an interface layer yields a density of 0.7–1.0 g / cm³. 3 Carbon fiber preforms containing ceramic components;

[0012] 3. A carbon source is introduced into the carbon fiber preform containing ceramic components to obtain a carbon-carbon preform;

[0013] 4. Machining a carbon-carbon blank according to the digital model to obtain a carbon-carbon brake disc;

[0014] 5. The carbon brake disc is reacted and infiltrated with raw materials to obtain a density of 1.8–2.5 g / cm³. 3 Carbon-ceramic brake disc; the particle size range of the raw material is 1-100μm, and the amount used is 1-3 times that of carbon-carbon brake disc.

[0015] Furthermore, step 1 specifically involves:

[0016] Using propylene as a reaction precursor, a PyC interface layer with a thickness of 300–2000 nm was prepared on a carbon fiber preform to obtain a carbon fiber preform with an interface layer.

[0017] Alternatively, using BF3-NH3 or BCl3-NH3 as reaction precursors, a BN interface layer with a thickness of 300–2000 nm can be prepared on the carbon fiber preform using the CVI process to obtain a carbon fiber preform with an interface layer.

[0018] Furthermore, step 2 specifically involves:

[0019] 2.1 Add ceramic raw materials to the container, wherein the ceramic raw materials are ceramic powder, dispersant and solvent; the particle size range of the ceramic powder is 0.5-20 μm, and its mass is 5-20% of the total mass; the dispersant is polyethyleneimine or sodium dodecylbenzenesulfonate, and its mass is 1-5% of the total mass; the solvent is ethanol or water, and its mass is 75-94% of the total mass.

[0020] 2.2 The ceramic raw materials are stirred evenly using a rotor; the rotor speed is 300-700 r / min;

[0021] 2.3. Ceramic raw materials are introduced into the carbon fiber preform with an interface layer using ultrasonic impregnation, vacuum impregnation, or filtration methods to obtain a carbon fiber preform containing ceramic components with a density of 0.7–1.0 g / cm³. 3 .

[0022] Furthermore, step 3 specifically involves:

[0023] A carbon source is introduced into a high-temperature deposition furnace at a deposition temperature of 700–1200℃. The carbon source undergoes high-temperature decomposition and condensation into carbon, which is then introduced into the pores of a carbon fiber preform containing ceramic components. This densifies the carbon fiber preform, resulting in a density of 1.2–1.5 g / cm³. 3 The carbon-carbon preform; the carbon source is natural gas or methane;

[0024] Alternatively, using resin as the carbon source and ethanol or water as the solvent, a resin slurry is prepared. The carbon fiber preform containing ceramic components is then impregnated, cured, and pyrolyzed in the resin slurry using ultrasonic impregnation, vacuum impregnation, or filtration methods to obtain a density of 1.2–1.5 g / cm³. 3 The carbon-carbon preform; the ratio of the resin to the solvent is (20-50):(50-80).

[0025] Furthermore, step 5 specifically involves:

[0026] Raw material with a particle size range of 1–100 μm, and an amount 1–3 times that of the carbon-carbon brake disc, is spread in a crucible. The carbon-carbon brake disc is then placed on top of the raw material. Graphite paper is placed on top of the crucible, which is then placed in a high-temperature furnace at 1400–1800 °C for 1–4 hours. After cooling to room temperature in the furnace, the crucible is removed and refined to obtain a density of 1.8–2.5 g / cm³. 3 Carbon ceramic brake disc.

[0027] Further, in step 2.1, the ceramic powder is any one or a combination of SiC powder, ZrC powder, BC powder, and WC powder.

[0028] Further, in step 3], the resin is phenolic resin or epoxy resin; the solvent is ethanol or water.

[0029] Furthermore, in step 5, the raw material is silicon powder or ferrosilicon alloy.

[0030] The beneficial effects of this invention are:

[0031] 1. The present invention provides a method for preparing a carbon-ceramic brake disc with adjustable performance. By adding an interface layer to the carbon fiber preform and controlling the type and thickness of the interface layer, the carbon fiber is protected from oxidation and corrosion by high-temperature silicon at high temperatures, thereby obtaining good mechanical properties and improving the bending strength and fracture toughness of the carbon-ceramic brake disc.

[0032] 2. The present invention provides a method for preparing a carbon-ceramic brake disc with adjustable performance. The introduction of ceramic powder and the oxidation products formed under specific oxidizing conditions (i.e., during high-speed continuous braking, the temperature of the carbon-ceramic brake disc rises sharply, and the service environment is exposed to air, making it prone to oxidation; at this time, some of the ceramic powder introduced into the carbon-ceramic brake disc undergoes an oxidation reaction, producing oxides to protect the carbon-ceramic brake disc) effectively protect the matrix, ensuring the oxidation resistance of the carbon-ceramic brake disc and improving its wear resistance. Furthermore, by utilizing the high density of the added ceramic powder, the densification cycle is shortened, achieving rapid densification. On the other hand, the internal pores of the low-density carbon fiber preform are mostly macroscopic pores; the addition of ceramic powder can separate these pores, allowing for the design of a microstructure suitable for subsequently shortening the densification cycle and silicon infiltration.

[0033] 3. The method for preparing the carbon-ceramic brake disc with adjustable performance of the present invention can reduce damage to carbon fibers by controlling the carbon source and introduction method of the carbon matrix, and can obtain a carbon matrix with uniform structure, which is conducive to the subsequent RMI (reactive melt infiltration) process.

[0034] 4. The present invention provides a method for preparing a carbon-ceramic brake disc with adjustable performance. By controlling the particle size and amount of ceramic powder, a controlled reaction melt infiltration method is used to prepare a carbon-ceramic brake disc, which can quickly prepare a carbon-ceramic brake disc with uniform structure, low residual Si content, and stable friction performance.

[0035] 5. The present invention provides a method for preparing a carbon-ceramic brake disc with adjustable performance. By introducing a carbon fiber preform interface layer, introducing ceramic powder, preparing a carbon matrix, and reacting to obtain a ceramic phase, the material system of the carbon-ceramic brake disc is improved, thereby obtaining a carbon-ceramic brake disc with excellent performance and a short preparation cycle. This solves the problems of uneven structure, unstable performance, long preparation cycle, and high residual Si content in current carbon-ceramic brake discs.

[0036] 6. The present invention provides a method for preparing a carbon-ceramic brake disc with adjustable performance. This method addresses the problem that current carbon-ceramic brake discs have a single composition, mainly consisting of carbon and ceramic phases, and a simple microstructure consisting of carbon fiber + carbon phase + ceramic phase from the inside out. The method optimizes the preparation of a carbon fiber preform interface layer, the introduction of ceramic powder, the preparation of a continuous carbon matrix, and the control of the ceramic phase obtained from the reaction. On the one hand, it enriches the matrix composition of the carbon-ceramic brake disc, and on the other hand, it improves the microstructure of the carbon-ceramic brake disc, increases the control of the friction coefficient of the carbon-ceramic brake disc, and enriches the product types. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the PyC interface layer prepared on the carbon fiber preform in step 1 of the first embodiment of the method for preparing a carbon ceramic brake disc with adjustable performance of the present invention.

[0038] Figure 2 A schematic diagram of obtaining the carbon matrix in step 3 of Example 1 of the method for preparing the performance-tunable carbon-ceramic brake disc of the present invention;

[0039] Figure 3 A schematic diagram of the microstructure of the carbon-ceramic brake disc obtained in step 5 of Example 1 of the preparation method of the carbon-ceramic brake disc with adjustable performance of the present invention. Detailed Implementation

[0040] Example 1

[0041] The present invention provides a method for preparing a carbon-ceramic brake disc with adjustable performance, comprising the following steps:

[0042] 1. Using propylene as a carbon reaction precursor, carbon fiber preforms were deposited in a high-temperature deposition furnace at 1200℃ for 30 hours to prepare a PyC interface layer, resulting in carbon fiber preforms with a PyC interface layer thickness between 300-400 nm; Figure 1 As shown, the thicknesses of the two PyC interface layers are 366nm and 374nm, respectively.

[0043] 2. Ceramic raw materials, consisting of ceramic powder, dispersant, and solvent, are added to a container. The ceramic powder is SiC powder with a particle size of 20 μm, comprising 20% ​​of the total mass. The dispersant is polyethyleneimine, comprising 5% of the total mass. The solvent is water, comprising 75% of the total mass. The ceramic raw materials are stirred evenly using a rotor at a speed of 700 r / min. The ceramic raw materials are then introduced into the carbon fiber preform with an interface layer using an ultrasonic impregnation method, resulting in a density of 1.0 g / cm³. 3 Carbon fiber preforms containing ceramic components;

[0044] 3. A resin slurry was prepared using phenolic resin as the carbon source and ethanol as the solvent, with a phenolic resin to ethanol ratio of 50:50. A carbon fiber preform containing ceramic components was impregnated in the resin slurry using a vacuum impregnation method, then cured in an oven and pyrolyzed at 1000℃ to obtain a density of 1.5 g / cm³. 3 carbon-carbon preform, such as Figure 2 As shown, the ceramic powder and carbon matrix in the carbon-carbon preform are uniformly distributed in the gaps between the carbon fibers.

[0045] 4. Machining a carbon-carbon blank according to the digital model to obtain a carbon-carbon brake disc;

[0046] 5. Si powder with a particle size of 100 μm, used in amounts three times that of the carbon-carbon brake disc, was spread in a crucible. The carbon-carbon brake disc was then placed on top of the raw material. Graphite paper was placed on top of the crucible, and the crucible was placed in a high-temperature furnace at 1800℃ for 4 hours. After cooling to room temperature in the furnace, the crucible was removed and finely processed to obtain a density of 2.5 g / cm³. 3 Carbon ceramic brake disc;

[0047] like Figure 3 As shown, the carbon-ceramic brake disc obtained after reaction infiltration exhibits a uniform microstructure. The carbon fibers are protected by the PyC interface layer and are not eroded. The flexural strength of the carbon-ceramic brake disc was tested at five locations, as detailed in Table 1.

[0048] Sample block 1 Sample block 2 Sample block 3 Sample block 4 Sample block 5 average value 251.61 218.65 188.44 179.9 252.81 218.29

[0049] The average bending strength is 218.29 MPa, indicating good mechanical properties.

[0050] This invention obtains carbon fiber preforms with interface layers that have better mechanical properties by controlling the type and thickness of the interface layer; and prepares carbon ceramic brake discs by controlling the particle size and amount of raw materials using a controlled reaction melt infiltration method, thereby rapidly preparing carbon ceramic brake discs with uniform structure, low residual Si content, and stable friction performance.

[0051] Example 2

[0052] 1. Using propylene as a carbon reaction precursor, carbon fiber preforms were deposited in a high-temperature deposition furnace at 700℃ for 120h to prepare a PyC interface layer, resulting in carbon fiber preforms with a PyC interface layer thickness of 1700-2000nm.

[0053] 2. Ceramic raw materials, consisting of ceramic powder, dispersant, and solvent, are added to a container. The ceramic powder is ZrC powder with a particle size of 0.5 μm, comprising 5% of the total mass. The dispersant is polyethyleneimine, comprising 1% of the total mass. The solvent is ethanol, comprising 94% of the total mass. The ceramic raw materials are stirred evenly using a rotor at a speed of 300 r / min. The ceramic raw materials are then introduced into the carbon fiber preform with an interface layer using an ultrasonic impregnation method, resulting in a density of 0.7 g / cm³. 3 Carbon fiber preforms containing ceramic components;

[0054] 3. Using methane as a carbon source, a carbon matrix is ​​deposited in a high-temperature deposition furnace at a deposition temperature of 700℃. This allows the carbon source to decompose and condense into carbon at high temperature, which is then introduced into the pores of the carbon fiber preform containing ceramic components. This densifies the carbon fiber preform containing ceramic components, resulting in a density of 1.2 g / cm³. 3 carbon-carbon preform;

[0055] 4. Machining a carbon-carbon blank according to the digital model to obtain a carbon-carbon brake disc;

[0056] 5. A silicon-iron alloy with a particle size of 50 μm, used in amounts three times that of the carbon-carbon brake disc, was placed in a crucible. The carbon-carbon brake disc was then placed on top of the raw material. Graphite paper was placed on top of the crucible, and the crucible was placed in a high-temperature furnace at 1800℃ for 1 hour. After cooling to room temperature in the furnace, the crucible was removed and finely processed to obtain a density of 1.8 g / cm³. 3 Carbon ceramic brake disc.

[0057] This invention uses the above-mentioned methods and raw materials to control the interface layer of carbon fiber preform, the introduction of ceramic powder, the preparation of carbon matrix and the generation of reactive ceramic phase, so as to rapidly prepare carbon ceramic brake disc with uniform structure, good mechanical properties, stable friction performance and good oxidation resistance.

[0058] Example 3

[0059] 1. Using BF3-NH3 as the reaction precursor, carbon fiber preforms were deposited in a high-temperature deposition furnace at 1200℃ for 30h to prepare a PyC interface layer, resulting in carbon fiber preforms with a PyC interface layer thickness between 600-700nm.

[0060] 2. Add ceramic raw materials to a container. The ceramic raw materials consist of ceramic powder, a dispersant, and a solvent. The ceramic powder is a mixture of BC powder and WC powder (in a 1:1 ratio), with a particle size of 10 μm and a mass of 15% of the total mass. The dispersant is sodium dodecylbenzenesulfonate, with a mass of 4% of the total mass. The solvent is water, with a mass of 80% of the total mass. Stir the ceramic raw materials evenly using a rotor at a speed of 600 r / min. Introduce the ceramic raw materials into the carbon fiber preform with the interface layer using a vacuum filtration method to obtain a density of 0.9 g / cm³. 3 Carbon fiber preforms containing ceramic components;

[0061] 3. Using epoxy resin as the carbon source and ethanol as the solvent, a resin slurry was prepared, with a phenolic resin to ethanol ratio of 40:60. A carbon fiber preform containing ceramic components was impregnated in the resin slurry using a vacuum filtration method, then cured in an oven and pyrolyzed at 900℃ to obtain a density of 1.2 g / cm³. 3 carbon-carbon preform;

[0062] 4. Machining a carbon-carbon blank according to the digital model to obtain a carbon-carbon brake disc;

[0063] 5. Si powder with a particle size of 5 μm, used in twice the amount of the carbon-carbon brake disc, was spread in a crucible. The carbon-carbon brake disc was then placed on top of the raw material. Graphite paper was placed on top of the crucible, and the crucible was placed in a high-temperature furnace at 1600℃ for 2 hours. After cooling to room temperature in the furnace, the crucible was removed and finely processed to obtain a density of 2.0 g / cm³. 3 Carbon ceramic brake disc.

[0064] Example 4

[0065] 1. Using BCl3-NH3 as the reaction precursor, carbon fiber preforms were deposited in a high-temperature deposition furnace at 1200℃ for 30h to prepare a PyC interface layer, resulting in carbon fiber preforms with a PyC interface layer thickness between 800-900nm.

[0066] 2. Ceramic raw materials, consisting of ceramic powder, dispersant, and solvent, were added to a container. The ceramic powder was WC powder with a particle size of 1 μm, comprising 16% of the total mass. The dispersant was sodium dodecylbenzenesulfonate, comprising 3% of the total mass. The solvent was water, comprising 81% of the total mass. The ceramic raw materials were stirred evenly using a rotor at a speed of 500 r / min. The ceramic raw materials were then introduced into the carbon fiber preform with an interface layer using a vacuum impregnation method, resulting in a density of 0.8 g / cm³. 3 Carbon fiber preforms containing ceramic components;

[0067] 3. Using epoxy resin as the carbon source and ethanol as the solvent, a resin slurry was prepared, with a phenolic resin to ethanol ratio of 20:80. A carbon fiber preform containing ceramic components was impregnated in the resin slurry using a vacuum filtration method, then cured in an oven and pyrolyzed at 1100℃ to obtain a density of 1.3 g / cm³. 3 carbon-carbon preform;

[0068] 4. Machining a carbon-carbon blank according to the digital model to obtain a carbon-carbon brake disc;

[0069] 5. Si powder with a particle size of 4 μm, used in an amount equal to that of the carbon-carbon brake disc, was spread in a crucible. The carbon-carbon brake disc was then placed on top of the raw material. Graphite paper was placed on top of the crucible, and the crucible was placed in a high-temperature furnace at 1500℃ for 3 hours. After cooling to room temperature in the furnace, the crucible was removed and finely processed to obtain a density of 2.1 g / cm³. 3 Carbon ceramic brake disc.

[0070] Example 5

[0071] 1. Using BF3-NH3 as the reaction precursor, carbon fiber preforms were deposited in a high-temperature deposition furnace at 1200℃ for 30h to prepare a PyC interface layer, resulting in carbon fiber preforms with a PyC interface layer thickness between 1000-1600nm.

[0072] 2. Ceramic raw materials, consisting of ceramic powder, dispersant, and solvent, were added to a container. The ceramic powder was BC powder with a particle size of 0.8 μm, comprising 18% of the total mass. The dispersant was sodium dodecylbenzenesulfonate, comprising 2% of the total mass. The solvent was water, comprising 80% of the total mass. The ceramic raw materials were stirred evenly using a rotor at a speed of 400 r / min. The ceramic raw materials were then introduced into the carbon fiber preform with the interface layer using a vacuum filtration method, resulting in a density of 0.9 g / cm³. 3 Carbon fiber preforms containing ceramic components;

[0073] 3. Using natural gas as a carbon source, a carbon matrix is ​​deposited in a high-temperature deposition furnace at a deposition temperature of 1200℃. This allows the carbon source to decompose and condense into carbon at high temperature, which is then introduced into the pores of the carbon fiber preform containing ceramic components. This densifies the carbon fiber preform, achieving a density of 1.4 g / cm³. 3 carbon-carbon preform;

[0074] 4. Machining a carbon-carbon blank according to the digital model to obtain a carbon-carbon brake disc;

[0075] 5. Si powder with a particle size of 1 μm, used in an amount 1.5 times that of the carbon-carbon brake disc, was spread in a crucible. The carbon-carbon brake disc was then placed on top of the raw material. Graphite paper was placed on top of the crucible, and the crucible was placed in a high-temperature furnace at 1550℃ for 2 hours. After cooling to room temperature in the furnace, the crucible was removed and finely processed to obtain a density of 2.0 g / cm³. 3 Carbon ceramic brake disc.

Claims

1. A method for preparing a carbon-ceramic brake disc with adjustable properties, characterized in that, The method comprises the following steps: 1】Preparation of an interface layer on a carbon fiber preform using a reaction precursor to obtain a carbon fiber preform with an interface layer; 2】The carbon fiber preform with interface layer is introduced with ceramic raw materials to obtain a carbon fiber preform with ceramic components with a density of 0.7~1.0g / cm 3 carbon fiber preform with ceramic components: 2.1, ceramic raw materials are added to the container, the ceramic raw materials are ceramic powder, dispersant and solvent; the particle size of the ceramic powder is 0.5-20 μm, and the mass is 5-20% of the total mass; the dispersant is polyethyleneimine or sodium dodecylbenzenesulfonate, and the mass is 1-5% of the total mass; the solvent is ethanol or water, and the mass is 75-94% of the total mass; the ceramic powder is any one or a combination of SiC powder, ZrC powder, BC powder and WC powder; 2.2, the ceramic raw materials are stirred uniformly by a rotor; the rotational speed of the rotor is 300-700 r / min; 2.3, introducing ceramic raw materials into the carbon fiber preform with interface layer by ultrasonic impregnation method or vacuum impregnation method or suction filtration method to obtain carbon fiber preform containing ceramic components, and the density is 0.7~1.0g / cm 3 ; 3】Introducing carbon source to the carbon fiber preform containing ceramic components to obtain a carbon-carbon blank: The carbon source is introduced into a high-temperature deposition furnace, the deposition temperature is 700-1200℃, the carbon source is decomposed and polycondensed into carbon at high temperature, and then the carbon source is introduced into the pores of a carbon fiber preform containing ceramic components, so that the carbon fiber preform containing ceramic components is densified, and a carbon-carbon blank with a density of 1.2-1.5 g / cm 3 is obtained; the carbon source is natural gas or methane. Or, with resin as carbon source, with ethanol or water as solvent, configure resin slurry, adopt ultrasonic immersion method or vacuum immersion method or suction filtration method to immerse, solidify, crack the carbon fiber preform containing ceramic component in the resin slurry, obtain carbon carbon blank with density of 1.2~1.5g / cm 3 ; the ratio of resin and solvent is (20-50):(50-80); 4】Machining the carbon-carbon blank according to the numerical model to obtain a carbon-carbon brake disc; 5】raw material is used to react and infiltrate carbon-carbon brake disc, and density of the carbon ceramic brake disc is 1.8~2.5g / cm 3 The carbon ceramic brake disc; the particle size of the raw material is 1~100μm, and the amount is 1-3 times of the carbon-carbon brake disc.

2. The method for preparing a performance-adjustable carbon-ceramic brake disc according to claim 1, characterized in that, Step 1】 is specifically: PyC interface layer with a thickness of 300-2000 nm is prepared on the carbon fiber preform using propylene as the reaction precursor to obtain a carbon fiber preform with an interface layer; Or, BN interface layer with a thickness of 300-2000 nm is prepared on the carbon fiber preform using BF3-NH3 or BCl3-NH3 as the reaction precursor by CVI process to obtain a carbon fiber preform with an interface layer.

3. The method for preparing a performance-adjustable carbon-ceramic brake disc according to claim 2, characterized in that, Step 5】 is specifically: The raw material with particle size range of 1-100 μm and amount of 1-3 times of the carbon-carbon brake disc is laid in the crucible, and then the carbon-carbon brake disc is laid on the raw material, the graphite paper is laid on the top of the crucible, and then the crucible is placed in the high-temperature furnace with temperature of 1400-1800 ℃ and time of 1-4 h, and then the crucible is taken out after being cooled to room temperature by the high-temperature furnace, and then the carbon-carbon brake disc is obtained by finishing, and the density of the carbon-carbon brake disc is 1.8-2.5 g / cm 3 Carbon ceramic brake disc.

4. The method for preparing the performance-controllable carbon ceramic brake disc according to claim 3, characterized in that: In step 3】 the resin is phenolic resin or epoxy resin; the solvent is ethanol or water.

5. The method for preparing the performance-controllable carbon ceramic brake disc according to claim 4, characterized in that: In step 5】 the raw material is silicon powder or ferrosilicon alloy.

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