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

Layered gradient-structure tungsten-based composite material and preparation method thereof

A gradient structure, composite material technology, applied in metal layered products, chemical instruments and methods, layered products, etc., can solve the problems of poor toughness of tungsten materials, and achieve the effects of excellent toughness, good comprehensive performance and high strength

Active Publication Date: 2019-07-26
HEFEI UNIV OF TECH
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: tungsten materials have poor toughness under low temperature, high temperature, recrystallization or radiation conditions, and a layered gradient structure tungsten matrix composite material and its preparation method are provided

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
  • Layered gradient-structure tungsten-based composite material and preparation method thereof
  • Layered gradient-structure tungsten-based composite material and preparation method thereof
  • Layered gradient-structure tungsten-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A tungsten-based composite material with a layered gradient structure provided in this embodiment includes five repeating units, each repeating unit includes a tungsten layer, a titanium layer, a tantalum layer, a titanium layer, and a tungsten layer arranged in sequence, and two adjacent The repeating unit shares a tungsten layer; the tungsten layer, titanium layer and tantalum layer are all made of rolled metal foil.

[0055] The thicknesses of the tungsten foil, titanium foil and tantalum foil in this embodiment are all 100 μm.

[0056] The layered gradient structure tungsten-based composite material described in this example is prepared by the following method:

[0057]Surface treatment: Cut titanium foil and tantalum foil into discs with a diameter of 20 mm, place them in absolute ethanol for 10 minutes, remove dust and other impurities attached to the surface, dry them in vacuum and store them in a sealed container; Cut into discs with a diameter of 20mm by wire ...

Embodiment 2

[0071] A tungsten-based composite material with a layered gradient structure provided in this embodiment includes five repeating units, each repeating unit includes a tungsten layer, a titanium layer, a tantalum layer, a titanium layer, and a tungsten layer arranged in sequence, and two adjacent The repeating unit shares a tungsten layer; the tungsten layer, titanium layer and tantalum layer are all made of rolled metal foil.

[0072] The thicknesses of the tungsten foil, titanium foil and tantalum foil in this embodiment are all 100 μm.

[0073] The layered gradient structure tungsten-based composite material described in this example is prepared by the following method:

[0074] Surface treatment: Cut titanium foil and tantalum foil into discs with a diameter of 20 mm, place them in absolute ethanol for 10 minutes, remove dust and other impurities attached to the surface, dry them in vacuum and store them in a sealed container; Cut into discs with a diameter of 20mm by wire...

Embodiment 3

[0088] The main difference between this embodiment and the first embodiment lies in the specific parameters of spark plasma sintering.

[0089] In this embodiment, the spark plasma sintering process includes three stages:

[0090] The first stage is the stage of temperature rise and pressure increase. The stepwise temperature rise method is adopted. First, the temperature rises from room temperature to 600°C at a heating rate of 95°C / min, and then from 600°C to 1200°C at a heating rate of 100°C / min. At the same time, a constant rate of pressure increase is adopted, and the pressure is set at 3.5KN at room temperature, and the pressure reaches 9.5KN when the temperature reaches 1200°C;

[0091] The second stage is the heat preservation and constant pressure stage, and the time is 10 minutes;

[0092] The third stage is the temperature and pressure drop stage, from 1200°C to 600°C, the temperature drop rate is 30°C / min, and at the same time, the pressure is reduced at a constan...

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
Tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a layered gradient-structure tungsten-based composite material and a preparation method thereof. The layered gradient-structure tungsten-based composite material comprises fiverepetitive units which are sequentially stacked, wherein each repetitive unit uses a tantalum layer as the center, a titanium layer and a tungsten layer are sequentially arranged on each of two sidesof the tantalum layer from inside to outside, and every two adjacent stacked repetitive unit share one tungsten layer. The preparation method includes the steps of firstly, performing surface treatment; secondly, loading into a module; thirdly, sintering; fourthly, demoulding. The layered gradient-structure tungsten-based composite material and the preparation method thereof have the advantages that tungsten foil is arranged on two sides of the tantalum layers to serve as the matrix layers and titanium is arranged between the tungsten layers and the tantalum layers to serve as the interlayersto form the layered gradient-structure tungsten-based composite material, and the layered gradient-structure tungsten-based composite material is good in toughness, high in strength and good in comprehensive performance and has important practical significance to the first wall structure of a fusion reactor.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a layered gradient structure tungsten-based composite material and a preparation method thereof. Background technique [0002] Plasma facing material (Plasma Facing Material, PFM) refers to the first wall and divertor material that can directly "see" the plasma in the magnetic confinement controllable nuclear fusion reaction device, the high temperature and plasma of the power reactor based on nuclear fusion Materials exposed to the high temperatures and high-energy neutron fluxes generated during the deuterium-tritium (D-T) fusion reaction are highly susceptible to degradation, especially in fusion reactors with increased power ratings and in transient The severity is higher. Therefore, fusion reactor materials need to have high melting point, high strength, and good creep resistance, and the requirements for thermal, mechanical, and physical ...

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): B32B15/01B22F3/105C22C27/04C25F3/26
CPCB22F3/105B32B15/01B32B2250/40B32B2307/558C22C27/04C25F3/26
Inventor 陈畅刘蕊王珊许杰夏雪吕品钟志宏吴玉程
Owner HEFEI UNIV 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