Effects of TiO2 On the sintering densification of UO2-Gd2O3burnable poison fuel

摘要：

　　TiO2-doped UO2-Gd2O3(8%by wt Gd2O3)burnable poison fuel was prepared using a co-precipitation reaction method.Doping of UO2-Gd2O3 with 0.05 wt%TiO2 significantly improves the sintered density,grain size,and bending strength of fuel pellets resulting from sintering at 1 600℃ under hydrogen for 4 hours.Additionally,homogeneous solid solutions were successfully formed without precipitation of Tio2 and/or Gd2O3.TiO2 doping in UO2-Gd2O3 fuel pellets accelerates their thermally activated material transport resulting in a decrease in onset temperature and the temperature of maximum densification rate.

关键词： advanced nuclear fuel burnable poison sintering densification co-precipitation reaction method high burn-up

作者: WANG Hui PAN Xiao-qiang LI Tong-ye DUAN Pan-pan ZHANG Yong LIU Jin-hong

作者单位: National Key Laboratory for Nuclear Fuel and Materials,Nuclear Power Institute of China,Chengdu of Sichuan Prov. 610041,China

会议类型: 国内会议

会议名称: 中国核学会2015年学术年会

会议地点: 四川绵阳

会议语种:英文

页码: 39-49

在线出版日期: 2015-09-21（万方平台首次上网日期，不代表论文的发表时间）