Influence of thermal treatment on beryllium/carbon formation and fuel retention
Influence of thermal treatment on beryllium/carbon formation and fuel retention
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DOI：
10.1016/j.jnucmat.2011.01.131
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发表时间：
2011-09-01
影响因子：
3.1
通讯作者：
Roth, J.
中科院分区：
文献类型：
--
作者：
Anghel, A.;Porosnicu, C.;Roth, J.
由于在像ITER这样的聚变发电厂中去除核燃料的操作条件涉及面向等离子体的部件的高温烘烤--即第一壁的温度为515K，偏滤器区域的温度为623K--了解这种热处理程序将如何影响材料的性能是很重要的。观察到在623K加热时，来自石墨衬底的碳扩散到沉积的铍薄膜中，在界面形成了Be、BeO和Be2c的混合层，而Be-C界面上的氧则扩散到薄膜的表面。对比核反应分析的结果，发现热处理样品由于Be/C混合层的形成引起了薄膜结构的变化，以及氧扩散到热处理薄膜中的影响，在热处理样品中注入的氢被保留在更深的层中。(C)2011爱思唯尔B.V.保留所有权利。
Since the operation conditions for the nuclear fuel removal in a fusion power plant like ITER involves wall baking at high temperatures of the plasma facing components - i.e. 515 K for the first wall and 623 K for the divertor area - it is important to know how this thermal treatment procedures will affect the materials' properties. It was observed that by heating at 623 K. the carbon from the graphite substrate diffuses into the deposited beryllium film forming a mixed layer of Be, BeO and Be2C at the interface, while the oxygen present at the Be-C interface diffuses to the surface of the film. Comparing the results obtained by Nuclear Reaction Analysis it was observed that the deuterium implanted after annealing was retained in deeper layers in the case of thermally treated samples due to the structural changes induced in the films by the Be/C mixed layer formation and the effects of the oxygen diffusion into the thermal treated films. (C) 2011 Elsevier B.V. All rights reserved.