10B zirconium diboride and preparation method thereof

A technology of zirconium diboride and zirconium dioxide, which is applied in the field of 10B zirconium diboride and its preparation, can solve the problems of impossible preparation of zirconium diboride products, achieve good crystallinity, avoid operation losses and be easy to remove. Effect

Active Publication Date: 2013-07-03
DALIAN BORONTEN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, due to the stage limitations of science and technology and production development, such as 10 B and 11 Efficient separation techniques for B isotopes are only a few years old, so it is impossible to have 10 Preparation of B zirconium diboride product

Method used

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  • 10B zirconium diboride and preparation method thereof
  • 10B zirconium diboride and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] preparation 10 The abundance of B is 25% (at.) zirconium diboride, the raw material used is zirconium dioxide, the purity is 99.9wt%, and the particle size is d 50 10 B boron carbide, 10 B abundance 25wt% (at.), boron carbide content 95wt%, particle size d 50 50 <4μm, for commercial products;

[0028] The preparation steps are as follows:

[0029] (1) by mass parts, 72 parts of zirconium dioxide, 10 B 22 parts of boron carbide with an abundance of 25% (at.) and 6 parts of graphite powder are mixed to form a mixed material, which is then loaded into a dispersing sand mill, and absolute ethanol with 5 times the mass of the mixed material is added as a dispersant , using zirconia balls, milling for 2 hours, to obtain ethanol mixed powder;

[0030] (2) Place the ethanol mixed powder in a drying oven, and dry at 100°C for 60 minutes until all the ethanol evaporates to obtain a dried mixed powder;

[0031] (3) Add the dry mixed powder into the graphite crucible of...

Embodiment 2

[0035] preparation 10The abundance of B is 65% (at.) zirconium diboride, the raw material used is dehafnium dioxide, the purity is 99.9wt%, and the particle size is d 50 10 B boron carbide, 10 B abundance 65% (at.), boron carbide content 95.6wt%, particle size d 50 50 <4μm, for commercial products;

[0036] The preparation steps are as follows:

[0037] (1) In parts by mass, 75 parts of dehafnium dioxide, 10 B 20 parts of boron carbide with an abundance of 65% (at.) and 5 parts of graphite powder are mixed to form a mixed material, which is then loaded into a dispersing sand mill, and absolute ethanol with 7 times the mass of the mixed material is added as a dispersant , using zirconia balls for 5 hours of ball milling time to obtain ethanol mixed powder;

[0038] (2) Place the ethanol mixed powder in a drying oven, and dry at 100°C for 60 minutes until all the ethanol evaporates to obtain a dried mixed powder;

[0039] (3) Add the dry mixed powder into the graphit...

Embodiment 3

[0042] preparation 10 The abundance of B is 99% (at.) zirconium diboride, the raw material used is zirconium dioxide, the purity is 99.9wt%, and the particle size is d 50 10 B boron carbide, 10 B abundance 99% (at.), boron carbide content 95.6wt%, particle size d 50 50 <4μm, for commercial products;

[0043] The preparation steps are as follows:

[0044] (1) by mass parts, 70 parts of zirconium dioxide, 10 B 21 parts of boron carbide with an abundance of 99% (at.) and 9 parts of graphite powder are mixed to form a mixed material, which is then loaded into a dispersing sand mill, and absolute ethanol with 10 times the mass of the mixed material is added as a dispersant , using zirconia balls, milling for 3 hours, to obtain ethanol mixed powder;

[0045] (2) Place the ethanol mixed powder in a drying oven, and dry at 100°C for 60 minutes until all the ethanol evaporates to obtain a dried mixed powder;

[0046] (3) Add the dry mixed powder into the graphite crucible o...

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Abstract

The invention relates to 10B zirconium diboride and a preparation method thereof. 70 to 75 parts of zirconium dioxide or hafnium-free zirconium dioxide, 19 to 22 parts of boron carbide with 10B abundance of 25 to 99 percent (at.) and 5 to 9 parts of high-purity graphite powder are mixed to obtain a mixture, and then the mixture is mixed with absolute ethyl alcohol serving as a dispersant for 2 to5 hours through a zirconia grinding ball; the ethanol mixed powder is put into an environment at a temperature of 100 DEG C, so that ethanol is completely evaporated; the mixed powder is added into agraphite crucible of an induction furnace and infused with argon gas for protection, and the temperature is kept for 60 minutes after rising between 1,350 DEG C and 1,450 DEG C; and then the temperature keeps rising between 1,750 DEG C to 1,850 DEG C for 60 to 120 minutes before the heating is stopped. The ZrB2 content in the prepared 10B zirconium diboride is higher than 98 percent, the boron trioxide content is lower than 0.3 percent, the free boron content is lower than 1.3 percent, the free carbon content is lower than 1 percent, the particle size d50 is equal to or small than 10 mu.m, and the 10B abundance ranges from 25 percent to 99 percent (at.).

Description

Technical field [0001] The present invention involves the field of advanced ceramic materials, and it involves one 10 B two -boron 锆 锆 and its preparation method. Background technique [0002] 10 B Two boron 锆 has the advantages of high melting point, high hardness, high heating rate, good conductivity and other advantages. 10 B b b 锆 锆 锆 锆 10 B has a high neutron capture cross -section, causing can be width. After absorbing neutron, radioactive isotopes are not produced, and the secondary radio energy is low.This is used as a raw material to make sputtering target parts for internal components of the reactor. [0003] There are two types of natural isotopes of boron, which is 10 B and 11 B.In natural boron minerals in nature, 10 B's abundance is 19.6%(at. Atom, the same below), the rest is 11 B abundance 80.4%(at.).Now, Dalian Boytan Technology Co., Ltd. can provide a variety of abundance 10 B compound, 10 B abundance can reach 99%(AT.) 10 B compound product, so that the conditi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/58C04B35/622
Inventor 吴旭光曹宝胜韩晓辉
Owner DALIAN BORONTEN SCI & TECH
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