Preparation method of nano dysprosium titanate powder

A nano-titanium and powder technology, applied in nanotechnology, chemical instruments and methods, titanium compounds, etc., can solve the problems of easy incorporation of impurities, large particle size of synthetic powder, and achieve uniform particle size, low crystal formation temperature, The effect of high product purity
CN102701273AInactive Publication Date: 2012-10-03SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2012-10-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of nano dysprosium titanate powder. The method comprises the steps of dropping alcohol / water / glacial acetic acid mixed solution containing dysprosium nitrate into titanium acid butyl ester alcohol solution according to the molar ratio of Dy:Ti=(1-2:1); ageing obtained colloidal sol at the room temperature so as to obtain gel; drying and crushing the gel, arranging the gel into an aluminum oxide crucible, sintering the gel at 8001100 DEG C so as to obtain the nano dysprosium titanate powder. The nano dysprosium titanate powder preparation process is simple, the grain size of the powder is even and small, and the purity is high; and the powder can be used as neutron absorbing materials.
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Description

technical field

[0001] The invention relates to a preparation method of nano dysprosium titanate powder used as a neutron absorbing material, and belongs to the technical field of neutron absorbing materials. Background technique

[0002] The main function of nuclear radiation shielding materials is to absorb or weaken neutrons and gamma rays. In a nuclear reactor, most of the neutrons after passing through the pressure vessel and the sealed chamber have been moderated into thermal neutrons or epithermal neutrons. Such neutrons require materials with large thermal neutron absorption cross-sections for effective absorption without overflow.

[0003] The B10 isotope has a large thermal neutron absorption cross section, so boron carbide and boron steel are used in control rods and as shielding materials in the nuclear industry. However, due to the radiation B 10 The resulting (n,α) reaction causes these materials to "expand" after irradiation, forming nuclear bubbles. In th...

Claims

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