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

Carbon-nanotube-assisted brazing method of ceramic matrix fibre-woven composite and metal material

A composite material and fiber braiding technology, which is applied in the field of brazing of fiber braided composite materials and metal materials, can solve problems such as low joint strength and poor surface wettability, and achieve the goal of improving joint performance, improving wettability, and promoting spreading Effect

Active Publication Date: 2012-07-18
HARBIN INST OF TECH
View PDF4 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of poor wettability of brazing material on the surface of the composite material and low joint strength between the ceramic-based fiber braided composite material and the metal material in the brazing process of the existing ceramic-based fiber braided composite material and the metal material, and provides A carbon nanotube-assisted brazing method of a ceramic-based fiber braided composite material and a metal 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

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0013] Embodiment 1: In this embodiment, a carbon nanotube-assisted brazing method of a ceramic-based fiber braided composite material and a metal material is carried out according to the following steps:

[0014] 1. Immerse the ceramic-based fiber braided composite material in an iron-based or nickel-based catalyst solution with a concentration of 0.05mol / L to 0.15mol / L. After 3 to 10 minutes, the ceramic-based fiber braided composite material is lifted out and aired in the atmosphere 4 to 6 hours to obtain a ceramic-based fiber braided composite material with a layer of catalyst particles attached to the surface;

[0015] 2. a. Place the ceramic-based fiber braided composite material with a layer of catalyst particles on the surface obtained in step 1 in the reaction chamber of the plasma-enhanced chemical vapor deposition equipment, and vacuumize the reaction chamber until the vacuum degree is lower than 10Pa. h 2 until the pressure of the reaction chamber is 50-500Pa; b. ...

specific Embodiment approach 2

[0018] Embodiment 2: This embodiment differs from Embodiment 1 in that the ceramic-based fiber braided composite material is a quartz fiber braided reinforced composite material, a carbon fiber braided reinforced composite material or a carbon fiber reinforced silicon carbide composite material. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0019] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that: the metal material is titanium alloy, Invar alloy or superalloy. Others are the same as in the first or second embodiment.

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
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Shear strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a carbon-nanotube-assisted brazing method of a ceramic matrix fibre-woven composite and a metal material and relates to a brazing method of the fibre-woven composite and the metal material. The method aims at solving the problems of bad wettability of brazing filler metal to the surface of the composite and low joint strength in the existing brazing process of the ceramic matrix fibre-woven composite and the metal material. The method comprises the following steps of: (1) attaching a catalyst to the surface of the ceramic matrix fibre-woven composite; (2) regulating the reaction temperature, flow of H2 and CH4 and pressure, and preparing the ceramic matrix fibre-woven composite with the carbon-nanotube on the surface; and (3) feeding a vacuum brazing furnace for aninterface metallurgical reaction at the temperature between 800 and 950 DEG C and cooling to obtain a connection body of the ceramic matrix fibre-woven composite and the metal material. The joint shear strength of the connection body obtained in the method is improved by about five times to reach 15-31MPa compared with the joint shear strength of the connection body obtained by a direct connection method. The method is applicable to connection between the ceramic matrix fibre-woven composite and the metal material.

Description

technical field [0001] The invention relates to a brazing method of fiber braided composite material and metal material. Background technique [0002] Ceramic-based fiber braided composites are widely used in aerospace, aviation, automobile and other fields due to their excellent performance. With the continuous expansion of applications, the connection between ceramic-based fiber braided composites and metal materials has gradually become a key issue restricting the use of materials. In current engineering applications, adhesive bonding, mechanical connection, and welding are the main methods of material connection. Adhesive bonding has the problems of adhesive aging failure and poor high temperature resistance, mechanical connection will add extra weight to the structure, and many composite materials are difficult to machine. Brazing connection has the advantages of high joint strength, good sealing, simple process, etc., so it has a wide range of applications in the fie...

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): C04B37/02
Inventor 张丽霞张俊杰亓钧雷张大磊曹健冯吉才
Owner HARBIN INST OF TECH
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