کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4921059 | 1429332 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The influences of deuterium irradiation defects on mechanical properties for ceramic breeder material Li2TiO3
ترجمه فارسی عنوان
تأثیرات نقص تابش دوتیم بر خواص مکانیکی مواد لیتیوم تیتانیوم پرورش دهنده سرامیک
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
Tritium breeder materials are significant for blanket design of fusion reactor. However, during blanket operation, the ceramic breeder materials will be subject to neutron irradiation, which could be detrimental to mechanical properties. Because of good chemical stability and available tritium release behavior, Li2TiO3 is becoming one of candidate ceramic breeder materials. In this study, Li2TiO3 samples are irradiated by 120Â keV deuterium ions. For sample characterization, the phase composition is investigated by X-ray diffraction (XRD) before and after irradiation. After deuterium irradiation, the Electron Spin Resonance (ESR) experiments are employed to investigate the irradiation defects. Micro-hardness measurement is applied to study the changes of mechanical properties. XRD results indicate that Li2TiO3 crystals are damaged by deuterium irradiation, but no new phases are produced. According to ESR experiment, the main defect type after deuterium irradiation is F-center which are vacancies trapping one electron. According to Vickers hardness measurement, size effect of micro-hardness is observed. The Meyer coefficient obtained in the experiment is 1.65, which is less than 2. Vickers hardness increases as applied loads decrease which are consistent with Meyer theory. And Vickers hardness of Li2TiO3 decreases as irradiation doses increase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fusion Engineering and Design - Volume 121, October 2017, Pages 182-187
Journal: Fusion Engineering and Design - Volume 121, October 2017, Pages 182-187
نویسندگان
Jing Wang, Maoqiao Xiang, Yuping Xu, Feng Liu, Tao Lu, Haodong Liu, Haishan Zhou, Guang-nan Luo, Qiang Qi,