燃料相体积分数对U-Mo/Al弥散型燃料板的铀分布均匀性影响  

Effect of Fuel Volume Fraction on the Uranium Uniformity of U-Mo/Al Dispersion Fuel Plate

作　　者：庾正伟[1] 王录全[1] 刘海[1] 冷茂林[1] 黄健民[1] 郭振[1] 

机构地区：[1]中国核动力研究设计院,四川成都610213

出　　处：《新技术新工艺》2017年第1期7-10,共4页New Technology & New Process

基　　金：反应堆燃料及材料国家重点实验室预研基金资助项目(9140C700101120C70019)

摘　　要：采用原有混合工艺对20%~30%燃料相体积分数的U-Mo微球和铝粉进行混合后,制备成燃料板,分析燃料板的铀分布均匀性,获得燃料相体积分数对铀分布均匀性的影响规律。燃料板的铀均匀性采用γ射线吸收法进行检测。检测结果表明,在20%~26%燃料相体积分数范围内铀分布均匀,当燃料相体积分数增加到28%以上时,铀分布均匀性逐渐变差。在此基础上,对原有混合工艺不适用的燃料相体积分数进行混合工艺参数优化。燃料相体积分数为28%和30%的混合工艺经优化后,铀分布均匀性得到显著提升。U-Mo microspheres and Al powders with 20%-30% fuel volume fraction are mixed by a original mixing process. Fuel plates are fabricated by following steps, the uranium uniformity of the fuel plate is analyzed. The influence of fuel volume fraction on the uranium uniformity is obtained. And rang of fuel volume fraction suitable for the original mixing process is determined. On the basis of these, the mixing process optimization for other fuel volume fraction is analyzed. The uranium uniformity of the fuel plate is tested by γ-ray absorption method. Results show that the fluctuation of uranium uni- formity in 20%~26% fuel volume fraction ranges is small. When fuel volume fraction is increased to more than 28%, the u- ranium uniformity becomes worse. The original mixing process is suitable for the material mixed in 20%-26% fuel volume fraction range. After the optimization of mixing process with the fuel volume fraction of 28% and 30%, the uranium uniformity is significantly improved.

关 键 词：U—Mo/Al弥散型燃料板 燃料相体积分数 铀分布均匀性 混合工艺 

分 类 号：TL214[核科学技术—核燃料循环与材料]