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压水堆不同燃耗完整和破损棒燃料芯块氧化特征拉曼光谱研究

王华才 程焕林 宋武林 郭丽娜 汤琪 杨启法

王华才, 程焕林, 宋武林, 等. 压水堆不同燃耗完整和破损棒燃料芯块氧化特征拉曼光谱研究[J]. 强激光与粒子束, 2023, 35: 116003. doi: 10.11884/HPLPB202335.230047
引用本文: 王华才, 程焕林, 宋武林, 等. 压水堆不同燃耗完整和破损棒燃料芯块氧化特征拉曼光谱研究[J]. 强激光与粒子束, 2023, 35: 116003. doi: 10.11884/HPLPB202335.230047
Wang Huacai, Cheng Huanlin, Song Wulin, et al. Raman characteristic analysis of oxidation of fuel pellets for intact and leaked pressurized water reactors fuel rods with different burnup[J]. High Power Laser and Particle Beams, 2023, 35: 116003. doi: 10.11884/HPLPB202335.230047
Citation: Wang Huacai, Cheng Huanlin, Song Wulin, et al. Raman characteristic analysis of oxidation of fuel pellets for intact and leaked pressurized water reactors fuel rods with different burnup[J]. High Power Laser and Particle Beams, 2023, 35: 116003. doi: 10.11884/HPLPB202335.230047

压水堆不同燃耗完整和破损棒燃料芯块氧化特征拉曼光谱研究

doi: 10.11884/HPLPB202335.230047
基金项目: 中核集团青年英才基金项目(FY202307000520)
详细信息
    作者简介:

    王华才,wanghc1986@163.com

  • 中图分类号: TL341

Raman characteristic analysis of oxidation of fuel pellets for intact and leaked pressurized water reactors fuel rods with different burnup

  • 摘要: 为研究压水堆不同燃耗完整和破损燃料棒燃料芯块氧化过程和物相变化,采用拉曼光谱分析技术对燃耗为14 GW·d·t−1和45 GW·d·t−1的完整燃料棒及燃耗为14 GW·d·t−1和41 GW·d·t−1的破损燃料棒燃料芯块的氧化特征进行了分析。结果表明:14 GW·d·t−1和45 GW·d·t−1的完整燃料棒燃料芯块由UO2、U4O9和U3O8组成,相比于燃料芯块的内部区域,芯块边缘显示出更强的氧化性;14 GW·d·t−1和41 GW·d·t−1破损燃料棒燃料芯块发生了重结构,形成柱状晶粒,主要物相为UO2和U3O8。燃耗的加深和燃料棒的破损均促进了燃料芯块的氧化过程,但并不会改变燃料芯块的主要相结构。
  • 图  1  完整燃料棒燃料芯块光学形貌图

    Figure  1.  Optical morphology of fuel in intact fuel rod

    图  2  破损燃料棒燃料芯块光学形貌图

    Figure  2.  Optical morphology of fuel in leaked fuel rod

    图  3  100 mW激光功率对样品表面的影响

    Figure  3.  Influence of 100 mW laser power on sample surface

    图  4  不同激光功率对燃料芯块拉曼信号的影响

    Figure  4.  Effect of different laser power on Raman spectrum of fuel pellet

    图  5  D05和D13完整燃料棒燃料芯块Raman光谱图

    Figure  5.  Images of Raman spectra of D05 and D13 intact fuel rod

    图  6  E05和J05破损燃料棒燃料芯块Raman光谱图

    Figure  6.  Images of Raman spectra of E05 and J05 leak fuel rod

    图  7  燃料芯块1150 cm−1谱峰径向变化

    Figure  7.  Change of 1150 cm−1 intensity of fuel pellet

    表  1  不同燃耗完整和破损燃料棒信息

    Table  1.   Information of complete and leaked fuel rods with different burnup

    sample No. status burnup/(GW·d·t−1)
    D05 intact 14
    D13 intact 45
    E05 leaked 14
    J05 leaked 41
    下载: 导出CSV

    表  2  不同UO2氧化物类型Raman谱峰位移

    Table  2.   Raman peak shift of different UO2 oxide

    type of oxide Raman shift/cm−1
    UO2 445、575、1150
    U4O9 160、630
    U3O8 235、812
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-03-08
  • 修回日期:  2023-09-19
  • 录用日期:  2023-09-19
  • 网络出版日期:  2023-11-05
  • 刊出日期:  2023-11-11

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