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Volume 36 Issue 5
Aug.  2021
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YU Chong, YANG Jing, ZHANG Liang, LI Yuan-yuan, PAN Xiao-qiang. Preparation of nuclear-grade ZrB2 powders by sol-gel method[J]. Powder Metallurgy Technology, 2018, 36(5): 377-381. DOI: 10.19591/j.cnki.cn11-1974/tf.2018.05.010
Citation: YU Chong, YANG Jing, ZHANG Liang, LI Yuan-yuan, PAN Xiao-qiang. Preparation of nuclear-grade ZrB2 powders by sol-gel method[J]. Powder Metallurgy Technology, 2018, 36(5): 377-381. DOI: 10.19591/j.cnki.cn11-1974/tf.2018.05.010
shu

Preparation of nuclear-grade ZrB2 powders by sol-gel method

  • Key Laboratory for Reactor Fuel and Materials, Nuclear Power Institute of China, Chengdu 610041, China

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  • Corresponding author:

    YU Chong, E-mail: yucongyc@126.com

  • Received Date: March 24, 2018
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    • Abstract
  • According to the characteristic of nuclear grade ZrB2-IFBA burnable poison, the nuclear ZrB2 ultrafine powders were prepared by sol-gel technology and thermal carbon reduction process, using boric acid and zirconium nitrate as the source of B and Zr and glucose as the source of C. The phase composition, micro morphology, and element content by mass of the samples were analyzed by X-ray diffraction, field emission scanning electron microscope, and chemical titration. The results show that, the ultrafine ZrB2 powders in the average particle diameter of 0.41 μm can be obtained when Zr: B: C=1:2.2:6.5 by mole at 1300℃ as heat preservation for 2 h. Compared with the existing industrialization preparation process of ZrB2 powder, the B loss rate reduces significantly, and the minimum loss rate of B is 10.6% by mass in the whole process.
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