کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7886844 | 1509789 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High temperature thermal physical performance of SiC/UO2 composites up to 1600â¯Â°C
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
SiC was introduced to UO2 matrix by spark plasma sintering (SPS) to improve the thermal conductivity. The microstructure evolution and thermal physical properties up to 1600â¯Â°C were firstly reported. The grain growth and the formation of equiaxed grain structure were inhibited by the addition of SiC. The critical SPS sintering temperature, above which SiC was positive on improving thermal conductivity, was discovered to be 1300â¯Â°C. Two equations were proposed to calculate the thermal diffusivity and thermal conductivity of SiC/UO2 sintering at 1500â¯Â°C. Each percent of SiC fraction brought about 3% increment in thermal conductivity. The coefficient of thermal expansion (CTE) was decreased after SiC addition. Such improvement in thermal conductivity and decrease in CTE were beneficial to the fuel safety in accident condition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 9, 15 June 2018, Pages 10069-10077
Journal: Ceramics International - Volume 44, Issue 9, 15 June 2018, Pages 10069-10077
نویسندگان
Bingqing Li, Zhenliang Yang, Jianping Jia, Pengcheng Zhang, Rui Gao, Tong Liu, Rui Li, Huawei Huang, Maozhou Sun, Dandan Mazhao,