کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5467684 | 1518629 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of high flux plasma exposure on the micro-structural and -mechanical properties of ITER specification tungsten
ترجمه فارسی عنوان
اثر تابش بالای پلاسما بر روی خواص میکرو سازگار و مکانیکی مشخصات تیتانیوم تنگستن
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کلمات کلیدی
پلاسما بالا شار تنگستن، جابجایی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
چکیده انگلیسی
We have performed a combined study using transmission electron microscopy (TEM), nuclear reaction analysis (NRA) and nano-indentation (NI) techniques to reveal the impact of high flux plasma exposure on the properties of a sub-surface region of the commercially available pure tungsten fabricated following the ITER specification. TEM examination revealed the formation of a dense dislocation network and dislocation tangles, resulting in a strong increase in the dislocation density by at least one order of magnitude as compared to the bulk density. The plasma-induced dislocation microstructure vanishes within a depth of about 10-15 μm from the top of the exposed surface. Surface hardness after the plasma exposure was characterized by NI and was found to increase significantly in the sub-surface region of 1.5-3 μm. That was attributed to the resistance of the plasma-induced dislocation networks and deuterium-induced defects, whose presence within a depth of â¼1 μm was unambiguously detected by the NRA measurements as well.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 393, 15 February 2017, Pages 155-159
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 393, 15 February 2017, Pages 155-159
نویسندگان
A. Dubinko, D. Terentyev, A. Bakaeva, T. Pardoen, M. Zibrov, T.W. Morgan,