Radiation tolerance of Cu/W multilayered nanocomposites
Radiation tolerance of Cu/W multilayered nanocomposites
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Cu/W多层纳米复合材料的辐射耐受性
DOI：
10.1016/j.jnucmat.2011.03.030
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发表时间：
2011-06-01
影响因子：
3.1
通讯作者：
Zhang, Yanwen
中科院分区：
文献类型：
--
作者：
Gao, Yuan;Yang, Tengfei;Zhang, Yanwen
在室温下，用50个He离子，以7 × 10 ~（20）~ 6 × 10 ~（21）m ~（-2）的离子注量对单层厚度为2.5 ~ 50 nm的磁控溅射Cu/W多层膜样品进行辐照。通过X射线衍射和截面透射电子显微镜监测辐照过程中的界面结构的演变。此外，辐射响应上的个别层的厚度和He+离子辐照注量被揭示。多层结构的高度形态稳定性表明，界面结构和晶界可以作为辐射引起的缺陷的汇。(C)2011 Elsevier B. V.保留所有权利。
Magnetron sputtered Cu/W multilayer samples with individual layer thicknesses from 2.5 to 50 nm were irradiated by 50 key He ions at ion fluences from 7 x 10(20) to 6 x 10(21) m(-2) at room temperature. Evolution of the interfacial structure during irradiation is monitored by X-ray diffraction and cross-sectional transmission electron microscopy. Moreover, radiation responses on the individual layer thickness and He+ ion irradiation fluence are revealed. The highly morphological stability of the multilayered structure suggests that the interfacial structure and grain boundary can serve as sinks for radiation-induced defects. (C) 2011 Elsevier B.V. All rights reserved.