An overview on tritium permeation barrier development for WCLL blanket concept
An overview on tritium permeation barrier development for WCLL blanket concept
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DOI：
10.1016/j.jnucmat.2004.04.205
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发表时间：
2004-08
影响因子：
3.1
通讯作者：
A. Aiello;A. Ciampichetti;G. Benamati
中科院分区：
文献类型：
--
作者：
A. Aiello;A. Ciampichetti;G. Benamati
必须仔细评估减少氚通过包层结构材料和冷却管的渗透性，以最大限度地减少辐射危害。过去已经做出了巨大努力，以选择最佳的技术解决方案，以实现在复杂结构上实现氚渗透屏障(TPB)，这些结构在制造过程完成后无法直接接触到。最好的解决方案是在富铝涂层中，在其表面形成Al_2O_3。两项技术被选为实现WCLL毛毯概念中涂层的参考：CEA开发的实验室规模的化学气相沉积(CVD)工艺和FZK开发的热浸渍(HD)工艺。总结和讨论了三年来对CVD和HD涂层试件在气相和液态金属相中的试验结果。
The reduction of tritium permeation through blanket structural materials and cooling tubes has to be carefully evaluated to minimise radiological hazards. A strong effort has been made in the past to select the best technological solution for the realisation of tritium permeation barriers (TPB) on complex structures not directly accessible after the completion of the manufacturing process. The best solution was identified in aluminium rich coatings, which form Al2O3at their surface. Two technologies were selected as reference for the realisation of coating in the WCLL blanket concept: the chemical vapour deposition (CVD) process developed on laboratory scale by CEA, and the hot dipping (HD) process developed by FZK. The results obtained during three years of tests on CVD and HD coated specimens in gas and liquid metal phase are summarised and discussed.