| Sol-Gel法制备球形UO2陶瓷颗粒 |
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| 引用本文： | 卢振明,符晓铭,郭文利,梁彤祥,唐春和.Sol-Gel法制备球形UO2陶瓷颗粒[J].无机材料学报,2007,22(2):259-262. |
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| 作者姓名： | 卢振明 符晓铭 郭文利 梁彤祥 唐春和 |
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| 作者单位： | 清华大学核能与新能源技术研究院,新材料研究室,北京,102201 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 以U3O8粉末为原料,采用外凝胶与内凝胶结合的sol-gel法,经过溶解制胶、凝胶成球、陈化、洗涤干燥、煅烧、还原烧结、筛选得到球形UO2陶瓷颗粒．采用该方法制备的陶瓷颗粒为面心立方结构,密度为理论密度的98．18％;基本不含杂质, O／U比为2．00,平均标准偏差为0．001;平均直径为498．1μm,标准偏差为14．7μm;球形度分布在1．00～1．10区间,平均值为1．04;平均畸形比为2．2×10-4,各项指标都达到设计要求．同时,研究分析了各参数的影响．
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| 关 键 词： | 溶胶-凝胶 球形陶瓷颗粒 二氧化铀 核燃料 |
| 文章编号： | 1000-324X（2007）02-0259-04 |
| 收稿时间： | 2006-4-12 |
| 修稿时间： | 2006-04-122006-06-12 |
Preparation of Spherical UO2 Ceramic Particles by Sol-Gel Method |
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| LU Zhen-Ming,FU Xiao-Ming,GUO Wen-Li,LIANG Tong-Xiang,TANG Chun-He.Preparation of Spherical UO2 Ceramic Particles by Sol-Gel Method[J].Journal of Inorganic Materials,2007,22(2):259-262. |
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| Authors: | LU Zhen-Ming FU Xiao-Ming GUO Wen-Li LIANG Tong-Xiang TANG Chun-He |
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| Affiliation: | Division of New Materials, Institution of Nuclear and New Energy Technology, Tsinghua University, Beijing 102201 China |
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| Abstract: | The spherical UO2 ceramic particles were prepared by a sol-gel method with U3O8 powders as raw material, which combines advantages of external gelation and internal gelation methods. The process includes steps of sol preparation, gel particles forming, aging, washing, drying, calcining, reducing, sintering, sieving and separating. The crystal form of the ceramic particle is face-centered cubic, and its density reaches 98.18% of the theoretical density value. All of the O/U ratio, diameter, sphericity and odd-shaped particles fraction can reach the design specification. Influences of many factors are also analyzed. |
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| Keywords: | sol-gel spherical ceramic particle UO2 nuclear fuel |
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