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Preparation method of microelement and rare earth oxide composite reinforced tungsten-based composite material

A technology of rare earth oxides and trace elements, which is applied in the field of preparation of tungsten-based composite materials, can solve problems such as easy doping of impurities and performance impact of composite materials

Active Publication Date: 2019-11-29
安徽亿恒新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the composite powder prepared by the traditional mechanical alloying method is easy to be doped with impurities, and has a certain impact on the properties of the composite material obtained by subsequent sintering.

Method used

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  • Preparation method of microelement and rare earth oxide composite reinforced tungsten-based composite material
  • Preparation method of microelement and rare earth oxide composite reinforced tungsten-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this embodiment, the preparation method of the composite reinforced tungsten-based composite material with trace elements and rare earth oxides is as follows:

[0020] 1. Preparation of precursor

[0021] First, yttrium nitrate (Y(NO 3 ) 3 ·6H 2 O, Aladdin, purity ≥ 99.5%), zirconium nitrate (Zr(NO 3 ) 4 ·5H 2 O, Aladdin) and triethanolamine (C 16 h 22 N 4 o 3 , purity 99%) was dissolved in deionized water to make a solution; then added ammonium metatungstate (AMT, Aladdin, purity ≥ 99.95%) solution dissolved in deionized water, fully stirred to obtain a mixed solution; finally oxalic acid (C 2 h 2 o 4 2H 2 O, analytically pure) is added to the mixed solution, heated and stirred until the solution is completely evaporated, and the obtained precipitate is the precursor; wherein, the addition amount of yttrium nitrate, zirconium nitrate, triethanolamine and oxalic acid is 0.5% of the quality of ammonium metatungstate respectively. %, 0.2%, 6%, 38.9%.

[0...

Embodiment 2

[0027] In this embodiment, the preparation method of the composite reinforced tungsten-based composite material with trace elements and rare earth oxides is as follows:

[0028] 1. Preparation of precursor

[0029] First, yttrium nitrate (Y(NO 3 ) 3 ·6H 2 O, Aladdin, purity ≥ 99.5%), zirconium nitrate (Zr(NO 3 ) 4 ·5H 2 O, Aladdin) and triethanolamine (C 16 h 22 N 4 o 3 , purity 99%) was dissolved in deionized water to make a solution; then added ammonium metatungstate (AMT, Aladdin, purity ≥ 99.95%) solution dissolved in deionized water, fully stirred to obtain a mixed solution; finally oxalic acid (C 2 h 2 o 4 2H 2 O, analytically pure) is added to the mixed solution, heated and stirred until the solution is completely evaporated, and the obtained precipitate is the precursor; wherein, the additions of yttrium nitrate, zirconium nitrate, triethanolamine and oxalic acid are respectively 0.6% of the ammonium metatungstate quality. %, 0.3%, 6%, 38.9%.

[0030]2. R...

Embodiment 3

[0035] In this embodiment, the preparation method of the composite reinforced tungsten-based composite material with trace elements and rare earth oxides is as follows:

[0036] 1. Preparation of precursor

[0037] First, yttrium nitrate (Y(NO 3 ) 3 ·6H 2 O, Aladdin, purity ≥ 99.5%), zirconium nitrate (Zr(NO 3 ) 4 ·5H 2 O, Aladdin) and triethanolamine (C 16 h 22 N 4 o 3 , purity 99%) was dissolved in deionized water to make a solution; then added ammonium metatungstate (AMT, Aladdin, purity ≥ 99.95%) solution dissolved in deionized water, fully stirred to obtain a mixed solution; finally oxalic acid (C 2 h 2 o 4 2H 2 O, analytically pure) is added to the mixed solution, heated and stirred until the solution is completely evaporated, and the obtained precipitate is the precursor; wherein, the additions of yttrium nitrate, zirconium nitrate, triethanolamine and oxalic acid are respectively 0.7% of the quality of ammonium metatungstate %, 0.4%, 6%, 38.9%.

[0038] 2...

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Abstract

The invention discloses a preparation method of a microelement and rare earth oxide composite reinforced tungsten-based composite material. The W-Zr-Y2O3 composite material is prepared through a wet chemistry method. When a W-Zr-Y2O3 composite precursor is prepared, a second phase in reduced W-Zr-Y2O3 composite powder is promoted to be small in size and be distributed uniformly through adding of the element Zr and a ceramic phase Y2O3. The density of the composite material reaches 98% or above, the grain size ranges from 1.5 micrometers to 2.5 micrometers, the hardness of the W-Zr-Y2O3 composite material reaches 490-530 HV0.2, and the W-Zr-Y2O3 composite material is superior to a pure tungsten material with the grain size being about 15 micrometers and the hardness being 340 HV0.2.

Description

technical field [0001] The invention relates to a preparation method of a tungsten-based composite material, in particular to a preparation method of a tungsten-based composite material strengthened by compounding trace elements and rare earth oxides. Background technique [0002] Fusion energy is one of the important energy sources to solve the energy problems of human society at present, and it can realize inexhaustible energy. Through international unremitting efforts, the researched magnetic confinement fusion device Tokamak (Tokamak) provides the possibility of its realization, but there are still some problems in actual operation. Plasma facing materials (PFMs) will be subjected to high thermal loads during plasma operation, and ion flux and neutron loads, so improving the performance of plasma facing materials is very important. [0003] Tungsten has the characteristics of high melting point, high thermal conductivity, and strong anti-sputtering ability, and is curre...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C27/04C22C32/00B22F3/105B22F9/22
CPCC22C1/05C22C27/04C22C32/0031B22F3/105B22F9/22B22F2003/1051B22F2998/10
Inventor 罗来马周宇芬吴玉程谭晓月刘东光昝祥朱晓勇
Owner 安徽亿恒新材料科技有限公司
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