کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7962993 | 1514138 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study of corrosion-related defects of zirconium alloys with slow positron beam
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The corrosion behavior of Zr-4 and N5 alloy specimens corroded in 0.01â¯mol/L LiOH aqueous solution at 360â¯Â°C/18.6â¯MPa and in super heated steam at 400â¯Â°C/10.3â¯MPa for 1, 3 and 14 days were investigated by slow positron beam based Doppler broadening spectroscopy. Results showed that there was an evident interfacial layer with pre-existed vacancies and voids in uncorroded Zr-4 specimens, while in uncorroded N5 specimen, the interfacial defect layer can not be identified or a thin interfacial layer was only contained. When the specimens were corroded in super heated steam at 400â¯Â°C/10.3â¯MPa for a few days, the existence of the interface layer in the Zr-4 specimen would delay the diffusion rate of the oxygen atoms and decelerated the oxidation rate of the corrosion process. However, at very early stage of the corrosion, as Zr-4 and N5 specimens were corrded in 0.01â¯mol/L LiOH aqueous solution at 360â¯Â°C/18.6â¯MPa, the effect of Li+ accelerated the diffusion rate of the oxygen atoms, while the effect of the interface defect layer became a minor effect.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 508, September 2018, Pages 12-19
Journal: Journal of Nuclear Materials - Volume 508, September 2018, Pages 12-19
نویسندگان
Zhejie Zhu, Meiyi Yao, Jianjian Shi, Chunlong Yao, Eryang Lu, Xingzhong Cao, Baoyi Wang, Yichu Wu,