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

Metal ceramic composite material used at temperature less than 1,200 DEG C

A composite material and cermet technology, applied in the field of composite materials, can solve problems such as hindering wide application, poor reliability, and high brittleness of ceramics, and achieve the effects of small residual stress, buffer load and deflection crack, and small fiber damage.

Active Publication Date: 2014-04-16
SUZHOU HONGJIU AVIATION THERMAL MATERIALS TECH CO LTD
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the Achilles heel of ceramics, such as high brittleness and poor reliability, has long hindered its wide application. Therefore, people have been exploring ways to toughen ceramics for many years, and major breakthroughs have been made in recent years.

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
  • Metal ceramic composite material used at temperature less than 1,200 DEG C
  • Metal ceramic composite material used at temperature less than 1,200 DEG C

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Carbon fibers and nickel-chromium-nickel-silicon alloy wires are plied and twisted, and woven into a three-dimensional preform through three-dimensional weaving technology, and the fiber content is controlled to 60%; the carbon interface layer is prepared by the CVI method, and the thickness of the interface layer is controlled by relevant process parameters. 0.3 μm; and then in the same CVI equipment, trichloromethylsilane is used as a precursor to decompose SiC under appropriate conditions to fill the gaps of the preform densely to form a metal-ceramic composite material.

Embodiment 2

[0020] Combine carbon fibers and nickel-chromium-nickel-silicon alloy wires into bundles, first weave them into two-dimensional cloth, and then wind the cloth into tubes or other three-dimensional shapes, and control the fiber content to 70%; prepare the BN interface layer by the CVI method, and pass the relevant process parameters The thickness of the interfacial layer is controlled to 0.5 μm; then in the same CVI equipment, trichloromethylsilane is used as the precursor, and SiC is decomposed under appropriate conditions to fill the gaps of the preform densely to form a metal-ceramic composite material.

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 discloses a metal ceramic composite material used at a temperature less than 1,200 DEG C. The material is characterized by comprising the following steps: firstly, weaving mixed metal wires and fibers into a preformed body, permeating a deposited interface layer on the fiber surface of the preformed body by using a CVI (Chemical Vapor Infiltration) method, and further preparing an Sic ceramic matrix by using a CVI technique so as to finally prepare the metal ceramic composite material. The preformed body is formed by weaving mixed carbon fibers with nickel-chromium-nickel-silicon alloy wires; the carbon fibers and the alloy wires can be independently woven, or can be also combined and kneaded into bundles and are subsequently woven; the interface layer consists of carbon or BN (Boron Nitride) adopting a layered structure; the thickness of the carbon interface layer is 0.1-0.3 [mu]m; the thickness of the BN interface layer is 0.3-0.5 [mu]m; the Sic ceramic matrix accounts for 30-50% of the total volume of the composite material. The layered interface layer can be used as a baffle layer, and has the functions of conducting load, deflecting crack and relieving thermal mismatch.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a cermet composite material used below 1200°C. Background technique [0002] Ceramic matrix composites have excellent properties such as high specific strength, high specific modulus, high temperature resistance, and oxidation resistance. Become an important branch of high-tech new materials. [0003] However, the Achilles heel of ceramics, such as high brittleness and poor reliability, has long hindered its wide application. Therefore, people have been exploring ways to toughen ceramics for many years, and major breakthroughs have been made in recent years. The application of ceramic matrix composites (CMC) in aerospace thermal structural parts proves that the development of continuous fiber toughened CMC is an effective way to improve the brittleness and reliability of ceramics, which can make CMC have a metal-like fracture behavior and be insensitive to cracks. No catastro...

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): C04B35/76C04B35/565
Inventor 陈照峰聂丽丽
Owner SUZHOU HONGJIU AVIATION THERMAL MATERIALS TECH CO LTD
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