ERDA, RBS, TEM and SEM characterization of microstructural evolution in helium-implanted Hastelloy N alloy
ERDA, RBS, TEM and SEM characterization of microstructural evolution in helium-implanted Hastelloy N alloy
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氦注入哈氏合金 N 合金微观结构演变的 ERDA、RBS、TEM 和 SEM 表征
DOI：
10.1016/j.nimb.2017.03.148
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发表时间：
2017-05-15
影响因子：
1.3
通讯作者：
Shi, Liqun
中科院分区：
文献类型：
--
作者：
Gao, Jie;Bao, Liangman;Shi, Liqun
Hastelloy N合金在室温下注入30 keV、5 × 10（16）离子/cm（2）的氦离子，随后在600 ℃下退火1小时，并在真空中在850 ℃下进一步退火5小时。利用弹性反冲探测分析（ERDA）和透射电子显微镜（TEM）分别研究了Hastelloy N合金中氦离子浓度和氦气泡的深度分布。氦和钼元素向表面的扩散发生在850 ℃（5 h）的真空退火期间。同时还观察到，在富氘区的气泡尺寸比在更深的区域的气泡大得多。此外，值得注意的是，扫描电子显微镜（SEM）观察到高温退火后氦注入样品表面存在大量纳米孔。这一观测结果为氦释放的发生提供了证据，这也可以从ERDA和TEM分析结果中推断出来。(C)2017爱思唯尔B. V.保留所有权利。
Hastelloy N alloy was implanted with 30 keV, 5 x 10(16) ions/cm(2) helium ions at room temperature, and subsequent annealed at 600 degrees C for 1 h and further annealed at 850 degrees C for 5 h in vacuum. Using elastic recoil detection analysis (ERDA) and transmission electron microscopy (TEM), the depth profiles of helium concentration and helium bubbles in helium-implanted Hastelloy N alloy were investigated, respectively. The diffusion of helium and molybdenum elements to surface occurred during the vacuum annealing at 850 degrees C (5 h). It was also observed that bubbles in molybdenum-enriched region were much larger in size than those in deeper region. In addition, it is worth noting that plenty of nano-holes can be observed on the surface of helium-implanted sample after high temperature annealing by scanning electron microscope (SEM). This observation provides the evidence for the occurrence of helium release, which can be also inferred from the results of ERDA and TEM analysis. (C) 2017 Elsevier B.V. All rights reserved.