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
CN102115331BActive Publication Date: 2013-07-03DALIAN BORONTEN SCI & TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN BORONTEN SCI & TECH
Publication Date
2013-07-03

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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.).
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Description

Technical field

[0001] The present invention involves the field of advanced ceramic materials, and it involves one 10 B two -boron ้”† ้”† and its preparation method. Background technique

[0002] 10 B Two boron ้”† has the advantages of high melting point, high hardness, high heating rate, good conductivity and other advantages. 10 B b b ้”† ้”† ้”† ้”† 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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