Preparation method of carbon-ceramic brake material with strong oxidation resistance

An anti-oxidation, carbon-ceramic technology, applied in mechanical equipment, friction linings, gear transmission mechanisms, etc., can solve the problems of wear and friction interface stability, poor anti-oxidation performance of friction interface, etc., to reduce oxidation wear and improve anti-oxidation. The effect of oxidative power

Inactive Publication Date: 2020-04-24
山东道普安制动材料有限公司
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of poor oxidation resistance of the friction interface, severe wear and poor stability of the friction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of carbon-ceramic brake material with strong oxidation resistance

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0011] A preparation method of a carbon ceramic brake material with strong oxidation resistance, comprising the following steps:

[0012] 1) After high-temperature heat treatment of the three-dimensional acupuncture preform, pyrolytic carbon was deposited by chemical vapor infiltration CVI to obtain a density of 0.6 g / cm 3 -1.0g / cm 3 of carbon / carbon composites;

[0013] 2) depositing boron carbide on the upper surface of the carbon / carbon composite material by chemical vapor infiltration CVI deposition to obtain a carbon / carbon-boron carbide composite material;

[0014] 3) Pyrolytic carbon was deposited on the surface of the carbon / carbon-boron carbide composite boron carbide by chemical vapor infiltration CVI deposition, resulting in a density of 1.3 g / cm 3 -1.7g / cm 3 Multilayer structure carbon / carbon-boron carbide composite material containing carbon-boron carbide-carbon;

[0015] 4) carrying out high temperature heat treatment on the multi-layer structure carbon / carbo...

Example Embodiment

[0032] Example 1:

[0033] A preparation method of a carbon ceramic brake material with strong oxidation resistance, the steps are as follows:

[0034] 1) Preparation of carbon fiber preforms:

[0035] First, the C fiber with the grade of T700 is made into short fiber tire web and non-weft fabric, and then a single layer of 0° non-weft fabric, tire mesh, 90° non-weft fabric, and tire mesh are laid in sequence, and then the edge belt is used. The lower barb barbs are needle punched for lay fabrics and tire nets. The barb thorn brings the fiber of the tire mesh layer to the vertical direction during the needle punching process, so that the non-weft fabric and the tire mesh are integrated into one, and the density of needle punching holes is 8-12 pieces / cm 2 . According to the required thickness, the three-dimensional acupuncture carbon fiber preform is obtained after repeated lamination and needle punching. The density of the preform is about 0.55g / cm3, the volume content of...

Example Embodiment

[0053] Example 2:

[0054] A preparation method of a carbon ceramic brake material with strong oxidation resistance, the steps are as follows:

[0055] 1) Preparation of carbon fiber preforms:

[0056] First, the C fiber with the grade of T700 is made into short fiber tire net and non-weft fabric, and then a single layer of 0° non-weft fabric, tire net, 90° non-weft fabric, and tire net are successively layered in turn, and then the edge belt is used. The lower barb barbs are needle punched for lay fabrics and tire nets. The barb thorns bring the fibers of the tire mesh layer to the vertical direction during the needle punching process, so that the non-weft fabric and the tire mesh are integrated into one, and the density of needle punching holes is 8 to 12 / cm2. According to the required thickness, the three-dimensional acupuncture carbon fiber preform is obtained after repeated lamination and needle punching. The density of the preform is about 0.55g / cm3, the volume conten...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Densityaaaaaaaaaa
Densityaaaaaaaaaa
Densityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method of a carbon-ceramic brake material with strong oxidation resistance. The method is based on a three-dimensional needled carbon/ceramic brake material. A carbon/carbon-boron carbide composite material is obtained by introducing a CVI deposition B4C process technology between pyrolytic carbon and pyrolytic carbon; a siliconizing treatment is carried outafter a high-temperature treatment; the antioxidant carbon/carbon-boron carbide-silicon carbide composite material with a density of 1.9 g/cm<3> to 3.0 g/cm<3> is obtained; according to the method, the pyrolytic carbon matrix and the carbon fibers in the boron carbide layer can be effectively protected from being eroded by oxygen, meanwhile, the pyrolytic carbon layer outside the boron carbide layer is not influenced and reacts with molten silicon to generate silicon carbide, the integrity of the boron carbide layer is protected; the distribution uniformity of ceramic phases in each area is improved, the mechanical wear resistance of a carbon/carbon area is improved by utilizing the high hardness of boron carbide, the expansion path of cracks in the material failure process is prolonged through the multi-layer structure design, stress release is facilitated, the bearing capacity of the matrix is improved, and the strength and toughness of the brake material become better.

Description

Technical field: [0001] The invention relates to a preparation method of a carbon ceramic brake material with strong oxidation resistance, and belongs to the technical field of preparation technology of carbon fiber reinforced ceramic matrix composite materials. Background technique: [0002] Carbon fiber reinforced ceramic matrix composites have the advantages of high temperature resistance, high strength, and light weight, which overcome the shortcomings of traditional ceramics such as high brittleness and poor reliability. The fracture behavior of the material is similar to that of metals, with low susceptibility to cracking and no catastrophic failure. Carbon fiber reinforced ceramic matrix composites are widely used in high-temperature thermal structures, such as spacecraft engines, spacecraft heat protectors, and brake materials for automobiles and aircraft. [0003] Carbon-ceramic brake material is a new type of high-performance brake material developed after powder ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B35/83C04B35/84C04B41/89F16D69/02
CPCC04B35/83C04B41/89C04B41/52C04B41/009F16D69/023C04B2235/77F16D2200/0052F16D2200/0039F16D2200/0034F16D2200/0086C04B41/5058C04B41/4531C04B41/5059C04B41/4558
Inventor 刘汝强杨川何留阳李宗乐
Owner 山东道普安制动材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap