Boron carbide aluminum matrix composite material and preparation method thereof

A technology of boron carbide aluminum and composite materials, which is applied in anodic oxidation, reactors, nuclear engineering, etc., can solve the problems that aluminum substrates are prone to corrosion, damage the mechanical properties of materials, and complex processes, etc., and achieve good r-ray and neutron absorption performance , to avoid corrosion, the effect of a wide range of application prospects

Inactive Publication Date: 2017-05-24
安泰核原新材料科技有限公司
View PDF7 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned process is formed by cold isostatic pressing first, and then hot isostatic pressing. The process is complicated and the cost is high. Especially when the temperature exceeds 1000 ° C, Al4C3 products are formed in the billet, which seriously damages the mechanical propertie

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
  • Boron carbide aluminum matrix composite material and preparation method thereof
  • Boron carbide aluminum matrix composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example 1

[0036] The mass percentage of the boron carbide aluminum-based composite material provided in this embodiment is: nuclear grade boron carbide powder: 5%, and 6061 aluminum alloy powder: 95%.

[0037] The preparation method of the boron carbide aluminum-based composite material of this embodiment is as follows figure 1 As shown, including the following steps:

[0038] (1) The raw material powder preparation step: mix 950g 6061 aluminum alloy powder with a particle size of 0.5μm nuclear grade boron carbide powder 50g and a particle size of 100μm, and the mixing time is 8 hours to obtain 1000g mixed powder;

[0039] (2) Hot isostatic pressing step: put the mixed powder into a sheath, vacuum exhaust temperature is 200℃, sealed, hot isostatic pressing treatment, pressing pressure is 80MPa, temperature is 400℃, holding time is 1 hour, get hot isostatic pressing blank;

[0040] (3) Machining steps: the hot isostatic pressing blanks are removed from the jacket, and processed...

Example Embodiment

[0043] Example 2

[0044] The mass percentage of the boron carbide aluminum-based composite material provided in this embodiment is: nuclear grade boron carbide powder: 40%, and 6061 aluminum alloy powder: 60%.

[0045] The preparation method of the boron carbide aluminum-based composite material of this embodiment is as follows:

[0046] (1) The raw material powder preparation step: mix 950g 6061 aluminum alloy powder with a particle size of 75μm nuclear grade boron carbide powder and a particle size of 3μm 50g, and the mixing time is 24 hours to obtain 1000g of mixed powder;

[0047] (2) Hot isostatic pressing forming step: put the mixed powder into a sheath, vacuum exhaust temperature is 500 ℃, sealed, hot isostatic pressing treatment, pressing pressure is 150 MPa, temperature is 600 ℃, holding time is 4 hours, get hot isostatic pressing blank;

[0048] (3) Machining steps: the hot isostatic pressing blanks are removed from the jacket, and processed according to the requirements of ...

Example Embodiment

[0051] Example 3

[0052] The mass percentage of the boron carbide aluminum-based composite material provided in this embodiment is: nuclear grade boron carbide powder: 31%, and 6061 aluminum alloy powder: 69%.

[0053] The preparation method of the boron carbide aluminum-based composite material of this embodiment is as follows:

[0054] (1) The raw material powder preparation step: mix 950g 6061 aluminum alloy powder with a particle size of 25μm nuclear grade boron carbide powder and a particle size of 75μm 50g, and the mixing time is 15 hours to obtain 1000g of mixed powder;

[0055] (2) Hot isostatic pressing forming step: put the mixed powder into a sheath, vacuum exhaust temperature is 300 ℃, sealed, hot isostatic pressing treatment, pressing pressure is 130MPa, temperature is 500 ℃, holding time is 3 hours, get hot isostatic pressing blank;

[0056] (3) Machining steps: the hot isostatic pressing blanks are removed from the jacket, and processed according to the requirements of ...

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
Room temperature tensile strengthaaaaaaaaaa
Yield strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a boron carbide aluminum matrix composite material, which comprises the following raw materials by mass: 5-40% of nuclear grade boron carbide powder, and 60-95% of aluminum alloy powder. The preparation method includes: raw material powder preparation, hot isostatic pressure sintering, machine processing, and surface anodizing treatment. The prepared boron carbide aluminum matrix composite material has high density, a relative density of greater than 99.8%, room temperature tensile strength of greater than 280MPa, yield strength of more than 220MPa, an elongation rate of greater than 3.5%, and <10>B/B of 19.60-20.20%; after 8000h of 400DEGG C heat ageing test, the density, tensile strength, elongation rate and <10>B/B of the material have no change; after 10000h of corrosion in a 2700ppm boric acid solution, the material is free of corrosion; after irradiation under an r ray dose of 4.75*10<11>(rad) and a fast neutron dose of 7.09*10<19>(n/cm<2>), the material has tensile strength of greater than 300MPa and an elongation rate of greater than 0.4%. The boron carbide aluminum matrix composite material prepared by the method provided by the invention is applicable to nuclear power plant fuel storage racks, fuel transportation, transhipment, neutron shielding and other fields, and has good economic and social benefits.

Description

Technical field [0001] The invention belongs to the field of neutron absorption materials, and relates to a boron carbide aluminum-based composite material and a preparation method thereof. Background technique [0002] Nuclear power plant fuel storage grids, fuel transportation, transportation, neutron shielding and other fields require neutron absorbing materials to avoid neutron radiation. Commonly used neutron absorbing materials include lead-boron polyethylene, boron-containing polypropylene, cadmium plates, boron steel, boron carbide and aluminum-based boron carbide, among which boron carbide-aluminum-based composite materials have the high neutron absorption rate of boron carbide and light aluminum The characteristics of high quality, corrosion resistance and easy ductility have become the most used neutron absorbing material. [0003] The Chinese invention application with publication number CN102280156A discloses an aluminum-based boron carbide neutron absorption plate, w...

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): C22C1/05C22C21/00C22C32/00B22F3/15G21F1/08C25D11/04
CPCC22C1/05B22F3/15C22C21/00C22C32/0057C25D11/04G21F1/08
Inventor 刘桂荣陈锦王铁军吴天朋蔡静
Owner 安泰核原新材料科技有限公司
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