Hydrogen isotope permeation behavior from cooling water through various metal piping
Hydrogen isotope permeation behavior from cooling water through various metal piping
复制标题
冷却水通过各种金属管道的氢同位素渗透行为
DOI：
10.1016/j.fusengdes.2012.03.009
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
K. Okuno
中科院分区：
文献类型：
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作者：
T. Hayashi;H. Nakamura;K. Isobe;K. Kobayashi;M. Oyaizu;T. Yamanishi;Y. Oya;K. Okuno
为了研究氢同位素在水-金属界面上的行为，在573 K和15 MPa条件下，进行了重水容器通过不同金属管道（如纯铁、镍、不锈钢（SS 304）和镀10μm金的纯铁）的氘渗透实验。在实验过程中，除镀金管道外的其他金属管道表面在重水界面处发生氧化反应，产生氘气。这种氘可以通过质谱仪检测到，质谱仪在连续抽真空的情况下监测管道的内部气体。结果清楚地表明，在连续抽真空的情况下，通过Fe、Ni和SS 304管道渗透的氘主要是氘气（D2），而通过镀金的则无法有效检测到。通过Fe、Ni和SS 304管道的D2渗透速率达到平衡条件，在D2 O-金属边界处产生氧化物，尽管得出转移机制还需要进一步的测试和建模活动。
In order to investigate the behavior of hydrogen isotope on the water–metal boundary, deuterium permeation experiments from heavy water vessel through various metal piping, such as pure iron (Fe), nickel (Ni), stainless steel (SS304), and pure iron with 10μm gold plating, were performed at 573K and at 15MPa. During the experiment, surfaces of metal piping except gold plating one were oxidized at the heavy water boundary and then deuterium would generate by the oxidation reactions. This deuterium could be detected by mass spectrometer, which monitored the inside gases of the piping under continuous evacuation. The result showed clearly that the deuterium permeated through Fe, Ni, and SS304 piping was detected as mainly deuterium gas (D2) under continuous evacuation, though that through gold plating one could not be detected effectively. The D2permeation rate through Fe, Ni, and SS304 piping reached equilibrium conditions with oxide generation at D2O–metal boundary, although concluding the transfer mechanism will require further testing and modeling activities.