Wang Jing, Toloczko Mychailo B, Kruska Karen, Schreiber Daniel K, Edwards Danny J, Zhu Zihua, Zhang Jiandong
Pacific Northwest National Laboratory, Richland, WA, 99354, USA.
Sci Rep. 2017 Nov 17;7(1):15813. doi: 10.1038/s41598-017-15669-y.
Accelerator-based ion beam irradiation techniques have been used to study radiation effects in materials for decades. Although carbon contamination induced by ion beams in target materials is a well-known issue in some material systems, it has not been fully characterized nor quantified for studies in ferritic/martensitic (F/M) steels that are candidate materials for applications such as core structural components in advanced nuclear reactors. It is an especially important issue for this class of material because of the strong effect of carbon level on precipitate formation. In this paper, the ability to quantify carbon contamination using three common techniques, namely time-of-flight secondary ion mass spectroscopy (ToF-SIMS), atom probe tomography (APT), and transmission electron microscopy (TEM) is compared. Their effectiveness and shortcomings in determining carbon contamination are presented and discussed. The corresponding microstructural changes related to carbon contamination in ion irradiated F/M steels are also presented and briefly discussed.
基于加速器的离子束辐照技术已被用于研究材料中的辐射效应数十年。尽管在某些材料体系中,离子束在靶材料中引起的碳污染是一个众所周知的问题,但对于作为先进核反应堆堆芯结构部件等应用候选材料的铁素体/马氏体(F/M)钢的研究,尚未对其进行充分表征和量化。由于碳含量对析出物形成有强烈影响,对于这类材料而言,这是一个尤为重要的问题。本文比较了使用三种常用技术(即飞行时间二次离子质谱(ToF-SIMS)、原子探针断层扫描(APT)和透射电子显微镜(TEM))量化碳污染的能力。介绍并讨论了它们在确定碳污染方面的有效性和缺点。还介绍并简要讨论了离子辐照F/M钢中与碳污染相关的相应微观结构变化。