High-performance carbon ceramic brake disc and preparation method thereof

Abstract

The application provides a high-performance carbon ceramic brake disc, which comprises a base area and a connecting area, wherein the connecting area is arranged in the base area in a ring shape and is fixedly connected with the base area as a whole. The connecting area is provided with a plurality of connecting holes which are uniformly distributed along the circumferential direction of the high-performance carbon ceramic brake disc. The total content of carbon fibers and carbon in the base area is 45-55 vol%, the content of silicon carbide is 40-50 vol%, and the content of silicon is 5-10 vol%. The total content of carbon fibers and carbon in the connecting area is 55-65 vol%, the content of silicon carbide is 30-40 vol%, and the content of silicon is 5-10 vol%. The total content of carbon fibers and carbon in the connecting area is 5-10 vol% higher than that in the base area. The carbon ceramic brake disc is divided into the base area and the connecting area, the base area and the connecting area have different fiber contents and fiber orientations, the fiber content of the connecting area is higher and the silicon carbide content is lower, and the fibers have an orientation, so that the material strength of the connecting area is ensured and cracking is not prone to occur during friction.

Description

Technical Field

[0001] The present invention relates to the technical field of brake disc manufacturing, and in particular to a high-performance carbon-ceramic brake disc and a preparation method thereof. Background Art

[0002] With the rapid development of the transportation industry, vehicle braking performance requirements have also increased. Traditional disc brakes operate by clamping the brake disc with the caliper's brake pads. The friction between the pads and the disc creates braking, slowing or stopping the vehicle. However, traditional disc brakes typically use cast iron. While low-cost, cast iron discs are molded in one piece, limiting the disc's material to a single material, resulting in heavy weight and poor heat dissipation. Carbon-ceramic composite brake material is a novel composite material composed of two or more phases, reinforced with high-strength carbon fibers and a matrix of pyrolytic carbon and silicon carbide. This material combines the advantages of powder metallurgy brake materials and C / C brake materials while effectively overcoming their shortcomings. It boasts advantages such as light weight, high specific strength, high specific heat, stable friction and mechanical properties, and particularly high impact toughness and strong resistance to seawater and salt spray corrosion.

[0003] The current preparation process for carbon-ceramic brake discs is needle puncture-carbonization-high-temperature treatment-chemical vapor deposition-high-temperature treatment-machining-siliconization-machining. Current carbon-ceramic brake discs are made of uniform material in the XY plane. To ensure good thermal conductivity, the silicon carbide content is often above 40 vol%. However, excessive silicon carbide content can lead to a more severe thermal mismatch between silicon carbide and carbon fiber, resulting in a decrease in the mechanical properties of the product. The holes where the brake disc and the disc head are connected are often subject to large shear forces. If the sample density is too high, the mechanical properties of the sample will decrease, leading to cracking at the connection holes. In response to this, a high-performance carbon-ceramic brake disc is proposed to effectively improve the strength of the brake disc connection and prevent cracking at the connection holes. Summary of the Invention

[0004] The present invention aims to provide a high-performance carbon-ceramic brake disc with different carbon fiber contents and fiber orientations in different areas, which can improve the material strength of the brake disc joints and prevent cracking.

[0005] To achieve the purpose, the application provides a high-performance carbon ceramic brake disc, which comprises a base area and a connecting area, the connecting area is arranged in the ring of the base area and is fixedly connected with the base area as a whole. The connecting area is provided with a plurality of connecting holes, which are uniformly distributed along the circumferential direction of the high-performance carbon ceramic brake disc. The total content of carbon fibers and carbon in the base area is 45-55 vol%, the content of silicon carbide is 40-50 vol%, and the content of silicon is 5-10 vol%; the total content of carbon fibers and carbon in the connecting area is 55-65 vol%, the content of silicon carbide is 30-40 vol%, and the content of silicon is 5-10 vol%, and the total content of carbon fibers and carbon in the connecting area is 5-10 vol% higher than that in the base area.

[0006] Preferably, the volume of the connecting area accounts for 10-30% of the total volume of the high-performance carbon ceramic brake disc, and the volume of the base area accounts for 70-90% of the total volume of the high-performance carbon ceramic brake disc.

[0007] Preferably, the carbon fibers in the connecting area are distributed in a predetermined direction. The carbon fibers in the base area are randomly distributed.

[0008] Preferably, the carbon fibers in the connecting area are distributed along the direction of the inner ring of the high-performance carbon ceramic brake disc and have a predetermined average cutting angle with the inner ring.

[0009] Preferably, the average cutting angle of the carbon fibers in the connecting area with the inner ring is less than 30°.

[0010] The application also provides a preparation method of the high-performance carbon ceramic brake disc, and the preparation method is as follows:

[0011] S1: uniformly mix 45-55 vol% of carbon fiber bundles and 45-55 vol% of phenolic resin powder to obtain a base area mixture; uniformly mix 55-65 vol% of carbon fiber bundles and 35-45 vol% of phenolic resin powder to obtain a connecting area mixture;

[0012] S2: place a hollow cylindrical partition plate in a mold, place the connecting area mixture inside a filler frame, and use an iron rake to comb the fibers along the direction of the inner ring; then place the base area mixture outside the filler frame;

[0013] S3: remove the filler frame, and then press the mold to obtain a solidified blank, the pressure is 20-30 MPa, the temperature is 120-160℃, and the holding time is 3-4 h;

[0014] S4: carbonize the solidified blank to obtain a carbonized blank;

[0015] S5: mechanically process the carbonized blank to obtain a brake disc blank;

[0016] S6: placing the brake disc blank into a boron nitride crucible for siliconizing treatment, and after the siliconizing treatment, performing surface grinding and outer contour size processing to obtain the high-performance carbon ceramic brake disc.

[0017] Preferably, the carbonization temperature in step S4 is 800-1200℃, and the holding time is 2-6h.

[0018] Preferably, in step S6, the boron nitride crucible is pre-filled with silicon powder with a mass 1.1 times that of the brake disc blank.

[0019] Preferably, in step S6, the siliconizing treatment temperature is 1600-1800℃, the holding time is 2-6h, and the furnace pressure is less than 1000Pa.

[0020] Beneficial effects: The high-performance carbon ceramic brake disc provided by the application has the base body area and the connecting area with different fiber content and fiber orientation, the base body area has lower fiber content and higher silicon carbide content, which ensures the heat conduction performance of the base body and avoids the heat generated during friction from being unable to be timely conducted out; the connecting area has higher fiber content and lower silicon carbide content, and the fibers have orientation, which ensures the material strength of the connecting area and avoids cracking during friction, greatly improving the comprehensive performance of the carbon ceramic brake disc. The application also provides a preparation method of the high-performance carbon ceramic brake disc, which has simple process and good economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Fig. 1 is a structural schematic diagram of the high-performance carbon ceramic brake disc of the application.

[0022] Figure 2 Fig. 2 is a top view of the high-performance carbon ceramic brake disc of the application. Figure 1

[0023] In the figure: 1-base body area, 2-connecting area, 3-test sample bar, 201-connecting hole. DETAILED DESCRIPTION

[0024] The embodiments described below are only a part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0025] Reference Figure 1 and Figure 2 ​The application provides a high-performance carbon ceramic brake disc, which comprises a base area 1 and a connecting area 2, wherein the connecting area 2 is arranged in the inner ring of the base area 1 and is fixedly connected with the base area 1 as a whole. The connecting area 2 is provided with a plurality of connecting holes 201 which are uniformly distributed along the circumferential direction of the high-performance carbon ceramic brake disc. The total content of carbon fibers and carbon in the base area 1 is 45-55 vol%, the content of silicon carbide is 40-50 vol%, and the content of silicon is 5-10 vol%; the total content of carbon fibers and carbon in the connecting area 2 is 55-65 vol%, the content of silicon carbide is 30-40 vol%, and the content of silicon is 5-10 vol%, and the total content of carbon fibers and carbon in the connecting area 2 is 5-10 vol% higher than that in the base area 1.

[0026] The volume of the connecting area 2 accounts for 10-30% of the total volume of the high-performance carbon ceramic brake disc, and the volume of the base area 1 accounts for 70-90% of the total volume of the high-performance carbon ceramic brake disc.

[0027] The carbon fibers in the connecting area 2 are distributed in a predetermined direction. The carbon fibers in the base area 1 are randomly distributed. The carbon fibers in the connecting area 2 are distributed along the direction of the inner ring of the high-performance carbon ceramic brake disc and form a predetermined average cutting angle with the inner ring. The average cutting angle between the carbon fibers in the connecting area 2 and the inner ring is less than 30°. By distributing the carbon fibers in the connecting area in a predetermined direction and increasing the content of the fibers, the strength of the connecting area can be effectively improved, and the working stability of the carbon ceramic brake disc can be ensured.

[0028] Embodiment 1

[0029] The embodiment provides a high-performance carbon ceramic brake disc, and the preparation steps are as follows:

[0030] S1: 50 vol% of carbon fiber bundles and 50 vol% of phenolic resin powder are uniformly mixed to obtain a base area mixture; 55 vol% of carbon fiber bundles and 45 vol% of phenolic resin powder are uniformly mixed to obtain a connecting area mixture;

[0031] S2: a hollow cylindrical partition plate is placed in a mold, the connecting area mixture is placed in the inner side of a filler frame, and the fibers are combed along the direction of the inner ring by using an iron rake so that the average cutting angle between the fibers and the inner ring is 25°; and then the base area mixture is placed in the outer side of the filler frame;

[0032] S3: the filler frame is removed, and then the mold is pressed to obtain a cured blank, the pressure is 25 MPa, the temperature is 150 DEG C, and the holding time is 3 h;

[0033] S4: the cured blank is subjected to carbonization treatment to obtain a carbonized blank, the carbonization temperature is 1000 DEG C, and the holding time is 4 h;

[0034] S5: the carbonized blank is mechanically processed to obtain a brake disc blank, and the product is prepared to have a ventilation channel and other features;

[0035] S6: the brake disc blank is placed in a boron nitride crucible for siliconizing treatment, the boron nitride crucible is previously filled with silicon powder with a mass of 1.1 times that of the blank, the siliconizing treatment temperature is 1700℃, the holding time is 3h, the furnace pressure is less than 1000Pa, and after the siliconizing treatment, surface grinding and outer contour size processing are performed to obtain the high-performance carbon ceramic brake disc.

[0036] Example 2

[0037] This embodiment provides a high-performance carbon ceramic brake disc, and the preparation steps are as follows:

[0038] S1: 45vol% of carbon fiber bundles and 55vol% of phenolic resin powder are uniformly mixed to obtain a matrix zone mixture; 50vol% of carbon fiber bundles and 50vol% of phenolic resin powder are uniformly mixed to obtain a connecting zone mixture;

[0039] S2: the hollow cylindrical partition plate is placed in the mold, the connecting zone mixture is placed inside the filler frame, and the fibers are combed along the inner ring direction with an iron rake so that the average cutting angle of the fibers with the inner ring is 25°; and then the matrix zone mixture is placed outside the filler frame;

[0040] S3: the filler frame is removed, and then the mold is pressed to obtain a cured blank, the pressure is 25MPa, the temperature is 150℃, and the holding time is 3h;

[0041] S4: the cured blank is carbonized to obtain a carbonized blank, the carbonization temperature is 1000℃, and the holding time is 4h;

[0042] S5: the carbonized blank is mechanically processed to obtain a brake disc blank, and the product is prepared to have a ventilation channel and other features;

[0043] S6: the brake disc blank is placed in a boron nitride crucible for siliconizing treatment, the boron nitride crucible is previously filled with silicon powder with a mass of 1.1 times that of the blank, the siliconizing treatment temperature is 1700℃, the holding time is 3h, the furnace pressure is less than 1000Pa, and after the siliconizing treatment, surface grinding and outer contour size processing are performed to obtain the high-performance carbon ceramic brake disc.

[0044] Example 3

[0045] This embodiment provides a high-performance carbon ceramic brake disc, and the preparation steps are as follows:

[0046] S1: take 55vol% of carbon fiber bundle, 45vol% of phenolic resin powder mixed evenly, to get the matrix zone mixture; take 60vol% of carbon fiber bundle, 40vol% of phenolic resin powder mixed evenly, to get the connecting zone mixture;

[0047] S2: put the hollow cylindrical separator into the mold, put the connecting zone mixture into the inside of the filler frame, and use the iron rake to comb the fiber along the inner ring direction to make the average cutting angle of the fiber with the inner ring 25°; then put the matrix zone mixture into the outside of the filler frame;

[0048] S3: draw away the filler frame, then press the mold to get the solidified blank, the pressure is 25MPa, the temperature is 150℃, and the holding time is 3h;

[0049] S4: carbonize the solidified blank to get the carbonized blank, the carbonization temperature is 1000℃, and the holding time is 4h;

[0050] S5: mechanically process the carbonized blank to get the brake disc blank, and prepare the product with the characteristics such as ventilation channel;

[0051] S6: put the brake disc blank into the boron nitride crucible for siliconizing treatment, put 1.1 times of silicon powder of the blank mass into the boron nitride crucible in advance, the siliconizing treatment temperature is 1700℃, the holding time is 3h, the furnace pressure is less than 1000Pa, after the siliconizing treatment, the surface is polished and the outer contour size is processed to get the high-performance carbon ceramic brake disc.

[0052] Example 4

[0053] The embodiment provides a high-performance carbon ceramic brake disc, and the preparation steps are as follows:

[0054] S1: take 55vol% of carbon fiber bundle, 45vol% of phenolic resin powder mixed evenly, to get the matrix zone mixture; take 60vol% of carbon fiber bundle, 40vol% of phenolic resin powder mixed evenly, to get the connecting zone mixture;

[0055] S2: put the hollow cylindrical separator into the mold, put the connecting zone mixture into the inside of the filler frame, and use the iron rake to comb the fiber along the inner ring direction to make the average cutting angle of the fiber with the inner ring 25°; then put the matrix zone mixture into the outside of the filler frame;

[0056] S3: draw away the filler frame, then press the mold to get the solidified blank, the pressure is 25MPa, the temperature is 150℃, and the holding time is 3h;

[0057] S4: carbonize the solidified blank to get the carbonized blank, the carbonization temperature is 1000℃, and the holding time is 4h;

[0058] S5: the carbonized blank is mechanically processed to obtain a brake disc blank, and the product is prepared to have a ventilation channel and other features;

[0059] S6: the brake disc blank is placed in a boron nitride crucible for siliconizing treatment, the boron nitride crucible is previously filled with silicon powder with a mass of 1.1 times that of the blank, the siliconizing treatment temperature is 1700°C, the holding time is 3h, the furnace pressure is less than 1000Pa, and after the siliconizing treatment, surface grinding and outer contour size processing are performed to obtain the high-performance carbon ceramic brake disc.

[0060] Example 5

[0061] This example provides a high-performance carbon ceramic brake disc, and the preparation steps are as follows:

[0062] S1: 50vol% of carbon fiber bundles and 50vol% of phenolic resin powder are uniformly mixed to obtain a base zone mixture; 55vol% of carbon fiber bundles and 45vol% of phenolic resin powder are uniformly mixed to obtain a connecting zone mixture;

[0063] S2: the hollow cylindrical partition plate is placed in the mold, the connecting zone mixture is placed inside the filler frame, and the fibers are combed along the inner ring direction with the iron rake to make the average cutting angle of the fibers with the inner ring 15°; and then the base zone mixture is placed outside the filler frame;

[0064] S3: the filler frame is removed, and then the mold is pressed to obtain a cured blank, the pressure is 25MPa, the temperature is 150°C, and the holding time is 3h;

[0065] S4: the cured blank is carbonized to obtain a carbonized blank, the carbonization temperature is 1000°C, and the holding time is 4h;

[0066] S5: the carbonized blank is mechanically processed to obtain a brake disc blank, and the product is prepared to have a ventilation channel and other features;

[0067] S6: the brake disc blank is placed in a boron nitride crucible for siliconizing treatment, the boron nitride crucible is previously filled with silicon powder with a mass of 1.1 times that of the blank, the siliconizing treatment temperature is 1700°C, the holding time is 3h, the furnace pressure is less than 1000Pa, and after the siliconizing treatment, surface grinding and outer contour size processing are performed to obtain the high-performance carbon ceramic brake disc.

[0068] Comparative Example 1

[0069] This comparative example provides a high-performance carbon ceramic brake disc, and the preparation steps are as follows:

[0070] S1: 50vol% of carbon fiber bundles and 50vol% of phenolic resin powder are uniformly mixed to obtain a brake disc mixture;

[0071] S2: Put the hollow cylindrical separator into the mold, fill the brake disc mixture into the mold, and use an iron rake to comb the fibers inside the filler frame along the inner ring direction to make the average cutting angle of the fibers with the inner ring 25°, then remove the filler frame, and then press the mold to obtain a solidified blank, the pressure is 25 MPa, the temperature is 150°C, and the holding time is 3h;

[0072] S3: Carbonize the solidified blank to obtain a carbonized blank, the carbonization temperature is 1000°C, and the holding time is 4h;

[0073] S4: Mechanically process the carbonized blank to obtain a brake disc blank, and prepare the product with features such as ventilation channels;

[0074] S5: Put the brake disc blank into a boron nitride crucible for siliconizing treatment, pre-put the blank mass 1.1 times of silicon powder in the boron nitride crucible, the siliconizing treatment temperature is 1700°C, the holding time is 3h, the furnace pressure is less than 1000Pa, and after the siliconizing treatment, the surface is polished and the outer contour size is processed to obtain the high-performance carbon ceramic brake disc.

[0075] Comparative Example 2

[0076] This comparative example provides a high-performance carbon ceramic brake disc, and the preparation steps are as follows:

[0077] S1: Mix 50vol% of carbon fiber bundle and 50vol% of phenolic resin powder uniformly to obtain a matrix zone mixture; mix 55vol% of carbon fiber bundle and 45vol% of phenolic resin powder uniformly to obtain a connecting zone mixture;

[0078] S2: Put the hollow cylindrical separator into the mold, put the connecting zone mixture inside the filler frame, and use an iron rake to comb the fibers along the inner ring direction to make the average cutting angle of the fibers with the inner ring 45°; then put the matrix zone mixture outside the filler frame;

[0079] S3: Remove the filler frame, then press the mold to obtain a solidified blank, the pressure is 25 MPa, the temperature is 150°C, and the holding time is 3h;

[0080] S4: Carbonize the solidified blank to obtain a carbonized blank, the carbonization temperature is 1000°C, and the holding time is 4h;

[0081] S5: Mechanically process the carbonized blank to obtain a brake disc blank, and prepare the product with features such as ventilation channels;

[0082] S6: the brake disc blank is placed in a boron nitride crucible for siliconizing treatment, 1.1 times the mass of the blank of silicon powder is previously placed in the boron nitride crucible, the siliconizing treatment temperature is 1700℃, the holding time is 3h, the furnace pressure is less than 1000Pa, and after the siliconizing treatment, surface grinding and outer contour size processing are performed to obtain the high-performance carbon ceramic brake disc.

[0083] Comparative Example 3

[0084] The present embodiment provides a high-performance carbon ceramic brake disc, and the preparation steps are as follows:

[0085] S1: 50vol% of carbon fiber bundles and 50vol% of phenolic resin powder are uniformly mixed to obtain a matrix zone mixture; 55vol% of carbon fiber bundles and 45vol% of phenolic resin powder are uniformly mixed to obtain a connecting zone mixture;

[0086] S2: the hollow cylindrical partition plate is placed in a mold, and the connecting zone mixture is placed inside the filler frame; and the matrix zone mixture is placed outside the filler frame;

[0087] S3: the filler frame is removed, and then the mold is pressed to obtain a cured blank, the pressure is 25MPa, the temperature is 150℃, and the holding time is 3h;

[0088] S4: the cured blank is subjected to carbonization treatment to obtain a carbonized blank, the carbonization temperature is 1000℃, and the holding time is 4h;

[0089] S5: the carbonized blank is subjected to mechanical processing to obtain a brake disc blank, and the product has features such as ventilation channels;

[0090] S6: the brake disc blank is placed in a boron nitride crucible for siliconizing treatment, 1.1 times the mass of the blank of silicon powder is previously placed in the boron nitride crucible, the siliconizing treatment temperature is 1700℃, the holding time is 3h, the furnace pressure is less than 1000Pa, and after the siliconizing treatment, surface grinding and outer contour size processing are performed to obtain the high-performance carbon ceramic brake disc.

[0091] The carbon ceramic brake discs prepared in the above Examples 1-4 and Comparative Examples 1-3 are tested. The test method is: the bending strength is tested according to the fine ceramic bending strength test method in GBT_65669-2006, as shown in Figure 2 The test sample 3 length direction is perpendicular to the vertical line of the sample center and the central axis of the brake disc.

[0092] The ceramic thermal conductivity is tested according to the national standard GB / T 39862-2021, and the heat conduction direction of the test sample is perpendicular to the friction surface of the brake disc.

[0093] The dynamic friction coefficient and wear rate of the carbon ceramic brake disc sample are tested by using a MM-1000 friction tester, the effective friction surface of the test ring has an outer diameter of 75mm / inner diameter of 55mm*10mm, the specific pressure is 98N / cm 2 , the inertia is 3kgf·cm·s 2 , and the linear velocity is 25m / s.

[0094] The test is carried out according to the test method specified in QC / T 316. With 0.6g equivalent braking torque, the braking frequency is 20*104 times, the connection hole position is checked for cracking every 50,000 times, and the total cycle is 300,000 times.

[0095] The test data are shown in Table 1.

[0096] Table 1: Test data of carbon ceramic brake discs of Examples 1-4 and Comparative Examples 1-3

[0097]

[0098] From the above examples, it can be seen that the high-performance carbon ceramic brake disc provided by the application sets two regions, a base region and a connecting region, and adjusts the fiber content and fiber orientation of the base region and the connecting region, so that the bending strength of the connecting region is greatly enhanced, the anti-cracking ability of the connecting part is effectively improved, and the use safety of the carbon ceramic brake disc is improved. As can be seen from Comparative Example 2 and Comparative Example 3, the carbon fiber orientation of the connecting region has a great influence on the strength of the connecting region. Comparative Example 1 uses the same raw materials in the two regions, and the carbon fiber / carbon content is high and the silicon carbide is low in the base region, so the wear amount is large.

[0099] The above only discloses several preferred embodiments of the application, and of course cannot limit the scope of the application, so equivalent changes made in the scope of the patent application of the application still fall within the scope of the application.

Claims

1. A high performance carbon-carbon brake disc comprising a base region and a connecting region, characterized in that, The connecting area is arranged in the ring of the base area and is fixedly connected with the base area as a whole, the connecting area is provided with a plurality of connecting holes, the connecting holes are uniformly distributed along the circumferential direction of the axial center of the high-performance carbon ceramic brake disc; the total content of carbon fiber and carbon in the base area is 45-55 vol%, the content of silicon carbide is 40-50 vol%, and the content of silicon is 5-10 vol%; the total content of carbon fiber and carbon in the connecting area is 55-65 vol%, the content of silicon carbide is 30-40 vol%, and the content of silicon is 5-10 vol%, and the total content of carbon fiber and carbon in the connecting area is 5-10 vol% greater than that in the base area.

2. The high performance carbon-carbon brake disc of claim 1, wherein, The volume of the connecting area accounts for 10-30% of the overall volume of the high-performance carbon ceramic brake disc, and the volume of the base area accounts for 70-90% of the overall volume of the high-performance carbon ceramic brake disc.

3. The high performance carbon-carbon brake disc of claim 1 wherein, The carbon fibers in the connecting area are distributed along a predetermined direction.

4. The high performance carbon-carbon brake disc of claim 3, wherein, The carbon fibers in the connecting area are distributed along the inner ring direction of the high-performance carbon ceramic brake disc and form a predetermined average cutting angle with the inner ring.

5. The high performance carbon ceramic brake disc according to claim 4, characterized in that: The average cutting angle between the carbon fibers in the connecting area and the inner ring is less than 30°.

6. A method for manufacturing a high performance carbon-carbon brake disc, for manufacturing a high performance carbon-carbon brake disc according to any one of claims 1 to 5, characterized in that, The preparation method is as follows: S1: 45-55 vol% of carbon fiber bundle and 45-55 vol% of phenolic resin powder are uniformly mixed to obtain a base area mixture; 55-65 vol% of carbon fiber bundle and 35-45 vol% of phenolic resin powder are uniformly mixed to obtain a connecting area mixture; S2: the hollow cylindrical partition plate is placed in the mold, the connecting area mixture is placed in the inside of the filler frame, and the fibers are combed along the inner ring direction with an iron rake; then the base area mixture is placed in the outside of the filler frame; S3: the filler frame is removed, and then the mold is pressed to obtain a solidified blank, the pressure is 20-30 MPa, the temperature is 120-160°C, and the holding time is 3-4 h; S4: the solidified blank is subjected to carbonization treatment to obtain a carbonized blank; S5: the carbonized blank is subjected to mechanical processing to obtain a brake disc blank; S6: the brake disc blank is placed in a boron nitride crucible for siliconizing treatment, and after the siliconizing treatment, the surface is polished and the outer contour size is processed to obtain the high-performance carbon ceramic brake disc.

7. The method for preparing a high-performance carbon-ceramic brake disc according to claim 6, characterized in that: In step S4, the carbonization temperature is 800-1200°C, and the holding time is 2-6 h.

8. The method for preparing a high-performance carbon-ceramic brake disc according to claim 6, wherein: In step S6, the boron nitride crucible is pre-filled with silicon powder whose mass is 1.1 times the mass of the brake disc blank.

9. The method for preparing a high-performance carbon-ceramic brake disc according to claim 6, wherein: In step S6, the siliconizing treatment temperature is 1600-1800°C, the holding time is 2-6 h, and the furnace pressure is less than 1000 Pa.

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