کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1468848 1510011 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An improved model for the corrosion of used nuclear fuel inside a failed waste container under permanent disposal conditions
ترجمه فارسی عنوان
یک مدل بهبود یافته برای خوردگی سوخت هسته ای مورد استفاده در داخل یک کانتینر شکست خورده تحت شرایط دفن دائمی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی


• The corrosion of spent nuclear fuel in a failed waste container is modelled.
• Alpha-radiolysis process is simulated using a full reaction set.
• Corrosion of UO2 is largely influenced by steel corrosion products, Fe2+ and H2.
• H2 concentrations required to completely suppress fuel corrosion are calculated.
• Influences of burnup and fuel age are examined.

An improved model for nuclear fuel corrosion inside a failed waste container has been developed. The model considers the influence of the α-radiolysis products using a full radiolytic reaction set, and demonstrates that H2O2 is the dominant oxidant. Corrosion of the fuel is modelled considering both the direct oxidation of UO2 by H2O2 and the galvanically-coupled oxidation by H2O2 reduction on noble metal (ε) particles. Corrosion has been found to be very sensitive to the corrosion products of steel container, Fe2+ and H2. The surface coverage of ε-particles can significantly influence the dissolution rate.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 84, July 2014, Pages 85–95
نویسندگان
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