کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5467265 | 1518614 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Radiation-induced mechanical property changes of CNT yarn
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
Stimulated by the previous findings that ion beam can induce carbon nanotube (CNT) welding, we studied the irradiation effects on CNT yarns by proton irradiation. A 2.5 MeV proton beam was transmitted through a 25 μm thick Ti window and irradiated CNT yarn in air. The yarn, of about 40 μm in diameter, was fabricated by pulling and spinning CNT bundles from a CNT aligned film. After irradiation to an ion fluence of 5 Ã 1012, 1 Ã 1013, 1 Ã 1014, and 1 Ã 1015 cmâ2, Raman spectroscopy was performed to study defect behavior by comparing intensity changes to the D and G bands at 1350 cmâ1 and 1560 cmâ1, respectively. The analysis revealed a decreasing defect level up to 1 Ã 1013 cmâ2, followed by an increasing defect level with increasing fluence. The mechanical properties of the yarns are characterized by using a tensile tester with a strain rate of 0.2 mm/min at room temperature. The maximum tensile strength occurred at a fluence of 1 Ã 1013 cmâ2. With increasing proton fluencies, the fracture strain shows gradual enhancement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 409, 15 October 2017, Pages 268-271
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 409, 15 October 2017, Pages 268-271
نویسندگان
Jonathan G. Gigax, Philip D. Bradford, Lin Shao,