کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8039100 1518595 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Helium ion irradiation-induced microstructure evolution on the surfaces of thin nickel foils
ترجمه فارسی عنوان
تشدید ریزساختار ناشی از اشعه یون هلیوم بر روی سطوح نایلل نازک
کلمات کلیدی
فویل نیکل، اشعه یون هلیوم، الگوهای لکه دار، تنش فشاری، جزایر پیشروی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
چکیده انگلیسی
Polycrystalline nickel foil (sample I) with thickness of ∼950 nm was irradiated with 0.5-1.2 MeV helium ions at room temperature. Another piece (sample II) with same thickness was mounted behind to receive the irradiation of transmitted helium ions (∼0.026-0.537 MeV). Morphology evolutions on irradiated surfaces were investigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Results show that the open cracks, which were located mainly at grain boundaries, occurred on the surfaces of both irradiated samples. Interestingly, ripple patterns were observed to be regularly arranged on the front surface of sample I. The compressive stress resulting in the sliding on close-packed (1 1 1) planes was regarded as the origin of the ripple formation. Moreover, protrusion islands and its surrounding microstructures were observed on the front surface of sample II. The mass transport driven by the lateral stress generated in the helium ion irradiation were discussed as possible reasons.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 428, 1 August 2018, Pages 24-29
نویسندگان
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