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Carbon-ceramic brake disc with wear-resistant and anti-oxidation coating and preparation method of carbon-ceramic brake disc

A carbon-ceramic brake disc and anti-oxidation coating technology, which is applied in the direction of brake discs, mechanical equipment, friction linings, etc., can solve the problem of debonding and debonding between the wear-resistant layer and the carbon-ceramic substrate. Meet the problems of tight bonding between the wear-resistant coating part and the carbon ceramic substrate, and achieve the effect of uniform composition, easy and precise control of dimensional accuracy, and bright and smooth appearance

Active Publication Date: 2021-08-20
HUNAN SHIXIN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wear-resistant coating prepared by this technology is prone to debonding between the wear-resistant layer and the carbon-ceramic substrate under the condition of high braking energy load, especially under high-speed and high-energy-load braking conditions. However, simple high-temperature curing cannot satisfy the tight bonding between the wear-resistant coating part and the carbon-ceramic substrate, and the risk of debonding is extremely high

Method used

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  • Carbon-ceramic brake disc with wear-resistant and anti-oxidation coating and preparation method of carbon-ceramic brake disc
  • Carbon-ceramic brake disc with wear-resistant and anti-oxidation coating and preparation method of carbon-ceramic brake disc
  • Carbon-ceramic brake disc with wear-resistant and anti-oxidation coating and preparation method of carbon-ceramic brake disc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1: Preparation of carbon fiber preform disc

[0035] Select the non-weft fabric and mesh layer made of carbon fiber with the grade T700, and lay them up according to the method of mesh layer / 0° non-weft fabric / net tire layer / 90° non-weft fabric...stacking, and then Acupuncture is carried out in the direction perpendicular to the stacking layer, and the final density is 0.45g / cm 3 The carbon fiber prefabricated body plate, and then according to the size profile of the carbon ceramic disc to be prepared, the outer diameter is 1mm wider than the size of the carbon ceramic disc to be prepared, and the inner diameter is compared to the required prepared carbon ceramic disc. A carbon fiber prefabricated disc body with a carbon ceramic disc size 1mm smaller;

[0036] Step 2: Densification of carbon fiber prefabricated disc body

[0037] The carbon fiber prefabricated disc prepared in step 1 is densified by means of CVI deposition, the selected gas source is propylene, a...

Embodiment 2

[0051] Step 1: Preparation of carbon fiber preform disc

[0052] Select the non-weft fabric and mesh layer made of carbon fiber with the grade T700, and lay them up according to the method of mesh layer / 0° non-weft fabric / net tire layer / 90° non-weft fabric...stacking, and then Acupuncture along the direction perpendicular to the stacking layer, and finally obtain a density of 0.55g / cm 3 The carbon fiber prefabricated body plate, and then according to the size profile of the carbon ceramic disc to be prepared, the outer diameter is 2mm wider than the size of the carbon ceramic disc to be prepared, and the inner diameter is compared to the required prepared carbon ceramic disc. A carbon fiber prefabricated disc body with a carbon ceramic disc size 2mm smaller;

[0053] Step 2: Densification of carbon fiber prefabricated disc body

[0054] The densification method combining impregnation and CVI deposition is adopted. The carbon fiber preform disc prepared in step 1 is first imp...

Embodiment 3

[0068] Step 1: Preparation of carbon fiber preform disc

[0069] Select the non-weft fabric and mesh layer made of carbon fiber with the grade T700, and lay them up according to the method of mesh layer / 0° non-weft fabric / net tire layer / 90° non-weft fabric...stacking, and then Acupuncture along the direction perpendicular to the stacking layer, and finally obtain a density of 0.50g / cm 3 The carbon fiber prefabricated body plate, and then according to the size profile of the carbon ceramic disc to be prepared, the outer diameter is 1.5mm wider than the size of the carbon ceramic disc to be prepared, and the inner diameter is compared to the required prepared carbon ceramic disc. The carbon ceramic disc is 1.5mm smaller than the carbon fiber prefabricated disc body;

[0070] Step 2: Densification of carbon fiber prefabricated disc body

[0071] The densification method combining impregnation and CVI deposition is adopted. The carbon fiber preform disc prepared in step 1 is fir...

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Abstract

The invention discloses a carbon-ceramic brake disc with a wear-resistant and anti-oxidation coating and a preparation method of the carbon-ceramic brake disc. The preparation method comprises the following steps that grooving treatment is conducted on the upper surface and the lower surface of a carbon / carbon composite material disc body, then coating slurry is brushed in a groove in the upper surface till the groove in the upper surface is filled with the coating slurry, and then the carbon / carbon composite material disc body is turned over, the groove in the lower surface is coated with the coating slurry till the groove in the lower surface is filled with the coating slurry, thus the carbon / carbon composite material disc body containing the coating slurry is obtained, curing, carbonization and ceramization treatment are sequentially conducted, and the carbon-ceramic brake disc is obtained. The preparation process of the wear-resistant and oxidation-resistant coating is simple, large-scale industrial mass production is easy to realize, the coating is bright and smooth in appearance, the bonding strength between the coating and the disc body is high, the size precision is easy to accurately control, and the problem that the size is easy to control inaccurately when the ceramic brake disc is subjected to machining treatment can be effectively solved.

Description

technical field [0001] The invention relates to a carbon-ceramic brake disc with a wear-resistant and anti-oxidation coating and a preparation method thereof, belonging to the technical field of preparation of carbon-ceramic composite materials. Background technique [0002] In recent years, carbon fiber-reinforced carbon-based and silicon carbide ceramic-based composite materials (referred to as carbon ceramics) can be widely used as high-performance friction materials in the new generation of braking due to their excellent properties such as wear resistance, light weight, and high temperature resistance. Preparation of brake discs. [0003] However, the existing carbon-ceramic brake discs usually use a high-temperature infiltration process to siliconize the carbon / carbon composite material (carbon fiber reinforced carbon matrix composite material), and liquid silicon enters the carbon / carbon composite material from the pores inside the carbon / carbon composite material. In...

Claims

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Application Information

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IPC IPC(8): C04B35/83C04B35/52C04B41/89F16D65/12F16D69/02
CPCC04B35/83C04B35/52C04B41/009C04B41/52C04B41/89F16D69/023F16D65/12C04B2235/658C04B2235/77C04B2235/96C04B2235/9684C04B41/5059C04B41/4552C04B41/5096C04B41/488C04B41/0072C04B41/4529
Inventor 鲍思权周娩红
Owner HUNAN SHIXIN NEW MATERIALS CO LTD
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