|
抗辐照损伤金属基纳米结构材料界面设计及其响应行为的研究进展
|
刘悦 1(  ), 汤鹏正 1, 杨昆明 1, 沈一鸣 2, 吴中光 2, 范同祥 1( )
|
|
Research Progress on the Interface Design and Interface Response of Irradiation Resistant Metal-Based Nanostructured Materials
|
LIU Yue 1( ), TANG Pengzheng 1, YANG Kunming 1, SHEN Yiming 2, WU Zhongguang 2, FAN Tongxiang 1( )
|
|
|
图2. 共格异质界面设计及其对辐照损伤的响应行为[32,34]
|
Fig.2. Design of coherent heterogeneous interfaces and their responses to the irradiation damage (a-f) the fully coherent fcc Cu/Fe nanolayers subjected to He ion irradiation[32] (a) the variation of peak He bubble density with layer thickness (h) (b) the variation of bubble size (d) with h (c) a cross-sectional TEM (XTEM) micrograph showing the layer interface retained and arrays of low-density He bubbles (with a diameter of ~1 nm or less) with an average separation distance of 1.5 nm were observed in the region close to the end of He concentration profile (d) XRD spectra of as-deposited (AD) and He ion irradiated Cu/Fe multilayers (e) prior to radiation of fully coherent immiscible Cu/Fe 0.75 nm multilayer, Cu is under compression and Fe is under tension (f) after radiation, He bubbles prefer to nucleate in Cu layers and are constricted to reside inside Cu layers (g, h) the fully coherent fcc Cu/Co nanolayers subjected to He ion irradiation[34] (g) XTEM showing clear alignment of He bubbles along layer interfaces. The embedded SAED pattern shows that the film retained epitaxial structure with fully coherent Cu/fcc Co stacking (h) inverse size-dependent radiation hardening in Cu/Co. The magnitude of radiation hardening is greater at smaller h (ΔHIT—indentation hardness) (i) comparison of the evolution of He bubble density along penetration depth in several Cu/Co multilayers[34]
|
|
 |
|
|