Preparation method of high-density Y2O3 doped W-Re alloy

A dense and high-density technology, which is applied in the field of preparation of high-density Y2O3 doped W-Re alloys, can solve the problems of block performance impact, easy doping of impurities, etc., and achieve improved grain boundary bonding force and good pinning effect , the effect of improving toughness

Active Publication Date: 2021-08-20
HEFEI UNIV OF TECH
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite powder prepared by the traditional mechanical alloying method is easy to be doped with imp

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
  • Preparation method of high-density Y2O3 doped W-Re alloy
  • Preparation method of high-density Y2O3 doped W-Re alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this embodiment, the preparation method of the alloy element and rare earth oxide doped tungsten-based composite material is as follows:

[0020] Step 1: Preparation of precursor powder

[0021] A certain amount of yttrium nitrate hexahydrate (Y(NO 3 ) 3 ·6H 2 O, Aladdin, purity ≥ 99.9%), ammonium rhenate (NH 4 ReO 4 , purity ≥ 99.9%) and surfactant triethanolamine oleate (C 16 h 22 N 4 o 3 , purity ≥ 99%) were dissolved in a certain amount of deionized water, and then the three solutions were mixed and stirred evenly; then added ammonium metatungstate (AMT, Aladdin, purity ≥ 99.95%) solution dissolved in a certain amount of deionized water Then put it into a magnetic stirrer to heat and stir well, and finally add a certain amount of oxalic acid dihydrate (C 2 h 2 o 4 2H 2 O, analytically pure) as a precipitant, the mixed solution was heated at a constant temperature in a magnetic stirrer at 120°C to evaporate the liquid, and then put into an oven for dry...

Embodiment 2

[0028]In this embodiment, the preparation method of the alloy element and rare earth oxide doped tungsten-based composite material is as follows:

[0029] Step 1: Preparation of precursor powder

[0030] A certain amount of yttrium nitrate hexahydrate (Y(NO 3 ) 3 ·6H 2 O, Aladdin, purity ≥ 99.9%), ammonium rhenate (NH 4 ReO 4 , purity ≥ 99.9%) and surfactant triethanolamine oleate (C 16 h 22 N 4 o 3 , purity ≥ 99%) were dissolved in a certain amount of deionized water, and then the three solutions were mixed and stirred evenly; then added ammonium metatungstate (AMT, Aladdin, purity ≥ 99.95%) solution dissolved in a certain amount of deionized water Then put it into a magnetic stirrer to heat and stir well, and finally add a certain amount of oxalic acid dihydrate (C 2 h 2 o 4 2H 2 O, analytically pure) as a precipitant, the mixed solution was heated at a constant temperature in a magnetic stirrer at 140°C and evaporated to dryness, and then put into an oven for dr...

Embodiment 3

[0037] In this embodiment, the preparation method of the alloy element and rare earth oxide doped tungsten-based composite material is as follows:

[0038] Step 1: Preparation of precursor powder

[0039] A certain amount of yttrium nitrate hexahydrate (Y(NO 3 ) 3 ·6H 2 O, Aladdin, purity ≥ 99.9%), ammonium rhenate (NH 4 ReO 4 , purity ≥ 99.9%) and surfactant triethanolamine oleate (C 16 h 22 N 4 o 3 , purity ≥ 99%) were dissolved in a certain amount of deionized water, and then the three solutions were mixed and stirred evenly; then added ammonium metatungstate (AMT, Aladdin, purity ≥ 99.95%) solution dissolved in a certain amount of deionized water Then put it into a magnetic stirrer to heat and stir well, and finally add a certain amount of oxalic acid dihydrate (C 2 h 2 o 4 2H 2 O, analytically pure) as a precipitant, the mixed solution was heated at a constant temperature in a magnetic stirrer at 130 ° C to evaporate the liquid, and then put into an oven for d...

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
Grain sizeaaaaaaaaaa
Grain sizeaaaaaaaaaa
Grain sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a high-density Y2O3 doped W-Re alloy. W-Re-Y2O3 composite powder is prepared by combining a wet chemical method and hydrogen reduction, and a dispersing agent triethanolamine oleate is added to enable HReO4 and Y2O3 to be more uniformly distributed in precursor powder and subsequent powder reduced by hydrogen; and then a block is prepared through a spark plasma sintering technology, in the sintering process, the element Re is subjected to solid solution treatment to be in a tungsten matrix, Y2O3 particles play a pinning role in dislocation, grains can be remarkably refined, and the plasticity of a tungsten-based composite material is improved.

Description

technical field [0001] The present invention relates to a kind of high density Y 2 o 3 Preparation method of doped W-Re alloy, using wet chemical method and hydrogen reduction to prepare nanoscale Y 2 o 3 Doping W-Re alloy powder, and then using spark plasma sintering to obtain high-density W-Re-Y 2 o 3 alloy. Background technique [0002] Medical CT machines are mainly used to comprehensively detect various organs and tissue lesions of the human body, and help doctors analyze and treat them. The X-ray generator is a key component of CT equipment, and the anode target is an important part of the X-ray generator. When X-rays are irradiated, they will gather at a certain focus on the target surface and generate high heat. The local temperature of the target surface is as high as 2600°C, and the average temperature of the entire anode target is also above 1300°C. Therefore, the anode in the X-ray tube The target faces a harsh working environment. Due to its high melting...

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): C22C1/05C22C27/04C22C1/10B22F3/105B22F9/22
CPCC22C1/05C22C27/04B22F9/22B22F3/105
Inventor 罗来马吴玉程黄胜猛昝祥朱晓勇
Owner HEFEI UNIV OF TECH
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