A facility for studying irradiation accelerated corrosion in high temperature water
A facility for studying irradiation accelerated corrosion in high temperature water
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DOI：
10.1016/j.jnucmat.2014.03.022
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发表时间：
2014-08
影响因子：
3.1
通讯作者：
S. Raiman;Alexander Flick;O. Toader;Peng Wang;Nassim A. Samad;Z. Jiao;G. Was
中科院分区：
文献类型：
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作者：
S. Raiman;Alexander Flick;O. Toader;Peng Wang;Nassim A. Samad;Z. Jiao;G. Was
研制了一套用于高温水中质子辐照加速腐蚀研究的装置。一个专门设计的束线和流水腐蚀电池添加到1.7 MV串列加速器在密歇根州离子束实验室提供的能力，研究位移损伤和辐解对腐蚀的同时影响。一个薄的样品既作为一个“窗口”进入腐蚀电池，通过质子束完全通过，并用于评估辐照加速腐蚀的样品。通过在130 °C和320 °C脱气水中以及320 °C含3 wppm H2的水中以0.5和10 μA/cm 2之间的束流密度辐照不锈钢样品来测试该设施。水的电导率和溶解氧含量的增加随质子束电流而变化，表明质子辐照加速了样品的腐蚀。电导率的增加在320 °C时最大，而DO的增加在130 °C时最大。添加3 wppm的H2抑制DO低于可检测的水平。该设施将使未来的研究辐照对腐蚀的影响，在高温水中与原位质子辐照。
A facility for the study of irradiation accelerated corrosion in high temperature water using in situ proton irradiation has been developed and validated. A specially designed beamline and flowing-water corrosion cell added to the 1.7 MV tandem accelerator at the Michigan Ion Beam Laboratory provide the capability to study the simultaneous effects of displacement damage and radiolysis on corrosion. A thin sample serves as both a “window” into the corrosion cell through which the proton beam passes completely, and the sample for assessing irradiation accelerated corrosion. The facility was tested by irradiating stainless steel samples at beam current densities between 0.5 and 10 μA/cm2in 130 °C and 320 °C deaerated water, and 320 °C water with 3 wppm H2. Increases in the conductivity and dissolved oxygen content of the water varied with the proton beam current, suggesting that proton irradiation was accelerating the corrosion of the sample. Conductivity increases were greatest at 320 °C, while DO increases were highest at 130 °C. The addition of 3 wppm H2suppressed DO below detectable levels. The facility will enable future studies into the effect of irradiation on corrosion in high temperature water with in situ proton irradiation.