کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1566108 | 1514217 | 2012 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of step wise variation of oxygen potential during the isothermal sintering on the grain growth behavior in Cr2O3 doped UO2 pellets
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
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چکیده انگلیسی
To study the effect of oxygen partial pressure on grain growth in Cr2O3 doped UO2 pellets, small amount of Cr2O3 doped UO2 samples have been sintered with and without a stepwise change of sintering atmospheres. An introduction of a stepwise increase of oxygen potential during the isothermal sintering stage enhances the grain growth of UO2 pellets greatly. This stepwise sintering effect has been explained in terms of a maximized residual Cr3+ concentration in grain boundaries throughout the entire sintering process. It was demonstrated that a stepwise sintering technique can reduce the doped amount of Cr2O3 to a minimum level while keeping the large grain size.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 429, Issues 1–3, October 2012, Pages 25–33
Journal: Journal of Nuclear Materials - Volume 429, Issues 1–3, October 2012, Pages 25–33
نویسندگان
Jae Ho Yang, Keon Sik Kim, Ik Hui Nam, Jang Soo Oh, Dong-Joo Kim, Young Woo Rhee, Jong Hun Kim,