| 溶胶-凝胶法制备核级ZrB2粉体 |
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| 引用本文： | 喻冲,杨静,张良,李圆圆,潘小强. 溶胶-凝胶法制备核级ZrB2粉体[J]. 粉末冶金技术, 2018, 36(5): 377-381. DOI: 10.19591/j.cnki.cn11-1974/tf.2018.05.010 |
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| 作者姓名： | 喻冲 杨静 张良 李圆圆 潘小强 |
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| 作者单位： | 中国核动力研究设计院反应堆燃料及材料重点实验室, 成都 610041 |
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| 摘 要： | 针对核级ZrB2-IFBA可燃毒物燃料的特点，以硼酸、硝酸氧锆作为B、Zr源，葡萄糖为C源，通过溶胶-凝胶技术和热碳还原工艺制备出核级ZrB2超微粉体。采用X射线衍射仪、场发射扫描电子显微镜、化学滴定仪等分析了样品的相组成、微观形貌和元素质量分数。结果表明，当Zr:B:C=1:2.2:6.5（摩尔比）时，在1300℃保温2 h后可获得平均粒径为0.41 μm的超微ZrB2粉体，整个过程B损失率最低为10.6%（质量分数），与现有工业化ZrB2粉末制备工艺相比，B损失率显著降低。
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| 关 键 词： | 可燃毒物 溶胶-凝胶 碳热还原法 ZrB2 超微粉体 |
| 收稿时间： | 2018-03-25 |
Preparation of nuclear-grade ZrB2 powders by sol-gel method |
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| Affiliation: | Key Laboratory for Reactor Fuel and Materials, Nuclear Power Institute of China, Chengdu 610041, China |
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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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