Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of FeSi2 modified C/SiC braking material

A brake material and modification technology, which is applied in the field of preparation of C/SiC brake materials, can solve the problems of affecting fiber reinforcement and affecting the mechanical properties of materials, and achieve the effects of reducing raw material costs, improving mechanical properties, and saving energy.

Inactive Publication Date: 2015-08-19
NORTHWESTERN POLYTECHNICAL UNIV
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-temperature impregnation often intensifies the reaction between the melt and C / C, which affects the reinforcement of the fiber. In addition, cooling at high temperature will leave a large residual stress in the material, which will aggravate the generation of micro-cracks and affect the mechanical properties of the material.

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 FeSi2 modified C/SiC braking material
  • Preparation method of FeSi2 modified C/SiC braking material
  • Preparation method of FeSi2 modified C/SiC braking material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment is a preparation of FeSi 2 The method for modifying the C / SiC brake material test block, the specific process is:

[0037] Step 1, preparation of C fiber preform:

[0038] Firstly, PAN-based T-300 (12K) carbon fiber is made into short-fiber tire mesh and non-weft fabric, and then the single-layer 0° non-weft fabric, tire mesh, 90° non-weft fabric, and tire mesh are laminated in sequence, and then Using acupuncture technology, the non-weft fabric and the tire net are integrated. According to the required thickness, after repeated lamination, acupuncture, lamination, acupuncture..., a three-dimensional acupuncture carbon fiber preform is obtained, and the density of the preform is about 0.55g / cm 3 .

[0039] Step 2, preparation of C / C composite material:

[0040] Using propylene as the precursor, PyC was deposited in the three-dimensional needle-punched C fiber preform at a deposition temperature of 900 °C and a deposition time of 500 h to prepare a de...

Embodiment 2

[0051] This embodiment is to prepare FeSi 2 The method of modifying the C / SiC brake test ring, the specific process is:

[0052] Step 1, preparation of C fiber preform:

[0053] Firstly, PAN-based T-300 (12K) carbon fiber is made into short-fiber tire mesh and non-weft fabric, and then the single-layer 0° non-weft fabric, tire mesh, 90° non-weft fabric, and tire mesh are laminated in sequence, and then Using acupuncture technology, the non-weft fabric and the tire net are integrated. According to the required thickness, after repeated lamination, acupuncture, lamination, acupuncture..., a three-dimensional acupuncture carbon fiber preform is obtained, and the density of the preform is about 0.55g / cm 3 .

[0054] Step 2, preparation of C / C composite material:

[0055] Using propylene as the precursor, PyC was deposited in the three-dimensional needle-punched C fiber preform at a deposition temperature of 900 °C and a deposition time of 400 h, and the prepared density was 1....

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

No PUM Login to View More

Abstract

The invention relates to a preparation method of a FeSi2 modified C / SiC braking material. A method combining CVI with RMI is adopted to prepare the FeSi2 modified three-dimensional needled C / SiC braking material. The preparation method includes: taking FeSi75 alloy powder as a RMI infiltration raw material; obtaining the FeSi2 modified C / SiC braking material through a reactive melt infiltration (RMI) process. By the preparation method, raw material cost is lowered remarkably, and RMI process temperature is lowered; a FeSi2 phase is introduced into a C / SiC composite material, so that strength and heat conductivity of the braking material are improved, friction stability is improved, and wear rate is lowered.

Description

technical field [0001] The present invention belongs to the preparation method of C / SiC brake material, especially relates to a kind of FeSi 2 The preparation method of the modified C / SiC brake material is a method of preparing C / SiC-FeSi by using FeSi75 alloy by reactive melt infiltration (RMI) method. 2 method of brake material. Background technique [0002] C / SiC brake material, also known as carbon ceramic brake material, has the characteristics of light weight, high strength, high temperature resistance, excellent braking performance and insensitivity to the environment. It is the latest powder metallurgy brake material and C / C brake material. A generation of brake materials. [0003] Document "Heidenreich B, Renz R, Krenkel W. Short fiber reinforced CMC materials for high performance brakes. 4th International Conference on High Temperature Ceramic Matrix Composites (HT-CMC4) Proceedings. Germany: Wiley-VCH, 2001.809–815." A method for preparing chopped carbon fiber ...

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): C04B35/80C04B35/622
Inventor 范尚武杜勇张立同成来飞
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com