• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>STP 1467; International Symposium on Zirconium in the Nuclear Industry; 20040613-17; Stockholm(SE) >The Effect of Duplex Cladding Outer Component Tin Content on Corrosion, Hydrogen Pick-up, and Hydride Distribution at Very High Burnup
【24h】

The Effect of Duplex Cladding Outer Component Tin Content on Corrosion, Hydrogen Pick-up, and Hydride Distribution at Very High Burnup

机译：极高燃耗时双熔覆外部成分锡含量对腐蚀，氢吸收和氢化物分布的影响

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The performance of two types of Duplex claddings irradiated to very high burnup in a German high duty pressurized water reactor (PWR) has been studied. Four fuel rods with Duplex cladding were moved from two discharged assemblies to a low-burnt assembly for further irradiation. These rods were finally unloaded after reaching a rod average burnup close to 70 MWd/kgU. The performance of these rods has been examined through pool-side inspection. Two of these rods have been studied further in a hot-cell post irradiation examination (PIE). The results of destructive and nondestructive examinations consistently show good corrosion resistance and low hydrogen pick-up for both Duplex variants. The hot-cell measurements reveal peak values of the oxide thickness of around 30 μm for both types of Duplex. Consequently, the claddings show low levels of absorbed hydrogen in the order of 300 ppm, as is indicated by metallographic cross-sections and the low axial growth of the rods. During the development of Duplex claddings, it was observed that the Sn content in the two components should not differ by more than about 0.7 wt%. A limited difference in Sn concentration implies that the two components have similar recrystallization temperatures. More important, hydriding studies of un-irradiated Duplex claddings have shown that, by limiting the difference in Sn content, the amount of hydrides in the boundary zone between the inner component and the Duplex layer is reduced. There is a significant difference in the Sn concentration in the outer component of the two studied Duplex types. The effect of difference in Sn concentration on hydride distribution observed from studies of un-irradiated claddings has, however, not been confirmed by the hot-cell studies presented here.
机译：在德国高负荷压水反应堆（PWR）中，研究了两种类型的双层覆层在极高燃耗下的性能。将带有双面覆层的四根燃料棒从两个放电组件移至低燃烧组件，以进行进一步辐照。在达到接近70 MWd / kgU的棒平均燃耗之后，最终将这些棒卸载。这些鱼竿的性能已通过池侧检查进行了检查。这些棒中的两个已在热室辐射后检查（PIE）中进行了进一步研究。破坏性检查和非破坏性检查的结果始终表明，双相变体都具有良好的耐腐蚀性和较低的氢吸收率。热室测量显示两种类型的双相钢的氧化物厚度峰值约为30μm。因此，如金相横截面和棒的低轴向生长所表明的，包层显示出低水平的300ppm的吸收氢。在双层覆层的开发过程中，观察到两种组分中的Sn含量差异不应超过约0.7 wt％。 Sn浓度的有限差异意味着两种成分的重结晶温度相似。更重要的是，对未经辐照的双面覆层的氢化研究表明，通过限制Sn含量的差异，减少了内部组件和双面层之间边界区域中的氢化物数量。在两种研究的双工类型的外部成分中，Sn浓度存在显着差异。从未经辐照的熔覆层研究中观察到的锡浓度差异对氢化物分布的影响尚未得到此处提出的热室研究的证实。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号