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

Manufacturing method of ceramic/copper composite material throat insert

A technology of composite materials and manufacturing methods, which is applied in other manufacturing equipment/tools, turbines, engine components, etc., can solve the problems of low thermal shock resistance of composite materials and low bonding strength of ceramic phase grains, and achieve excellent thermal shock resistance Performance, improve interface wettability, improve the effect of anti-ablation

Inactive Publication Date: 2011-11-23
CENT SOUTH UNIV
View PDF5 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As early as the late 1990s, Zhu Chuncheng of Harbin Institute of Technology and others reported the preparation of TiB2-TiC / Cu-Ni by using metal titanium, boron carbide, metal copper powder and nickel powder as raw materials through pressurized self-propagating high-temperature synthesis technology. Ablation-resistant material, but due to the low bonding strength of the ceramic phase grains in the prepared composite material, the thermal shock resistance of the composite material is low, and there are no reports of subsequent applications

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

Embodiment 1

[0033] Step 1: Preparation of Ceramic Skeleton

[0034] 1.1 Ball milling

[0035] Take metal titanium powder and boron carbide powder in a mass ratio of 2.6:1, use cemented carbide balls as grinding balls, and the ball-to-material ratio is 10:1; use analytical pure alcohol as the ball-milling medium, and ball-mill for 24 hours to obtain a mixed powder; The particle size of the metal titanium powder and the boron carbide powder is -200 mesh; the mass ratio of the ball milling medium to the metal titanium powder and the boron carbide powder is 1:2;

[0036] 1.2 Granulation

[0037] To the mixed powder obtained in 1.1, add paraffin wax accounting for 1% of the mixed powder mass, and granulate with a 40-mesh sieve to obtain mixed powder particles;

[0038] 1.3 Forming

[0039] Heat the mixed powder particles prepared in 1.2 to 60-70°C and fill them into a mold with a mold temperature of 65-75°C, the forming pressure is 100Mpa, and the mold is demoulded after holding the pressur...

Embodiment 2

[0049] Step 1: Preparation of Ceramic Skeleton

[0050] 1.1 Ball milling

[0051] Take metal titanium powder and boron carbide powder in a mass ratio of 2.6:1, use cemented carbide balls as grinding balls, and the ball-to-material ratio is 8:1; use analytical pure alcohol as the ball-milling medium, and ball-mill for 28 hours to obtain a mixed powder; The particle size of the metal titanium powder and the boron carbide powder is -200 mesh; the mass ratio of the ball milling medium to the metal titanium powder and the boron carbide powder is 1:2;

[0052] 1.2 Granulation

[0053] To the mixed powder obtained in 1.1, add paraffin wax accounting for 0.8% of the mixed powder mass, and granulate with a 40-mesh sieve to obtain mixed powder particles;

[0054] 1.3 Forming

[0055] Heat the mixed powder particles prepared in 1.2 to 60-70°C and fill them into a mold with a mold temperature of 65-75°C, apply a forming pressure of 110Mpa, hold the pressure for 60-75 seconds and then d...

Embodiment 3

[0065] Step 1: Preparation of Ceramic Skeleton

[0066] 1.1 Ball milling

[0067] Take metal titanium powder and boron carbide powder in a mass ratio of 2.6:1, use cemented carbide balls as grinding balls, and the ball-to-material ratio is 12:1; use analytical pure alcohol as the ball-milling medium, and ball-mill for 20 hours to obtain a mixed powder; The particle size of the metal titanium powder and the boron carbide powder is -200 mesh; the mass ratio of the ball milling medium to the metal titanium powder and the boron carbide powder is 1:2;

[0068] 1.2 Granulation

[0069] To the mixed powder obtained in 1.1, add paraffin wax accounting for 1.2% of the mixed powder mass, and granulate with a 40-mesh sieve to obtain mixed powder particles;

[0070] 1.3 Forming

[0071] Heat the mixed powder particles prepared in 1.2 to 60-70°C and fill them into a mold with a mold temperature of 65-75°C, apply a forming pressure of 120Mpa, hold the pressure for 60-75 seconds, and then...

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
Granularityaaaaaaaaaa
Densityaaaaaaaaaa
Mass ablation rateaaaaaaaaaa
Login to View More

Abstract

The invention relates to a manufacturing method of a ceramic / copper composite material throat insert, comprising preparation of a ceramic skeleton and infiltration of a copper alloy, wherein the preparation of the ceramic skeleton comprises the steps of ball milling, pelletizing, moulding, presintering and degreasing as well as high temperature sintering, and a porous ceramic skeleton blank used for preparing a throat insert is prepared; and the infiltration of the copper alloy comprises that Cu-Ni-Ag-Au alloy powder accounting for 36-38% of the weight of the porous ceramic skeleton blank is infiltrated into the porous ceramic skeleton blank at a high temperature, and the Cu-Ni-Ag-Au alloy is in composition of Cu-2.5Ni-1.45Ag-0.15Au in percent by weight. The manufacturing method provided by the invention is simple and is convenient to operate, the prepared ceramic / copper composite material has high thermal conductivity, low thermal expansion coefficient, low density and excellent anti-erosion property, a high-strengthen ceramic skeleton material is designed, the proportion of an infiltration agent is adjusted, the wettability of liquid copper / ceramic is improved, the light copper / ceramic throat insert composite material with excellent anti-erosion property can be prepared, and a high-density tungsten-copper throat insert composite material can be replaced, thus the ceramic / copper composite material throat insert is applicable to industrial production.

Description

technical field [0001] The invention discloses a method for manufacturing a ceramic / copper composite material throat lining, which belongs to the technical field of powder metallurgy material preparation. Background technique [0002] As a material for high-temperature applications such as rockets, missile throat linings and rudders, it should have excellent thermal shock resistance, ablation resistance and high-speed gas flow erosion resistance. The melting point of metal tungsten is as high as 3400°C. During the service process, metal copper undergoes phase changes such as melting and evaporation to absorb a large amount of heat, which provides a good cooling effect for components. At the same time, due to the good thermal conductivity of copper, local heat conducts quickly To the entire part, the temperature gradient in the part is reduced and the composite material has excellent thermal shock resistance. The application results show that among many high-temperature abla...

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): B22F5/00B22F3/12
Inventor 曹顺华谢继峰李文超韩超林俊峰
Owner CENT SOUTH 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