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RISS 인기검색어
- 검색키워드
- 저자 : Thomas J. Mckrell (검색결과 2 건)
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이유호,Thomas J. Mckrell,Mujid S. Kazimi 한국원자력학회 2013 Nuclear Engineering and Technology Vol.45 No.6
SiC has been under investigation as a potential cladding for LWR fuel, due to its high melting point and drasticallyreduced chemical reactivity with liquid water, and steam at high temperatures. As SiC is a brittle material its behavior duringthe reflood phase of a Loss of Coolant Accident (LOCA) is another important aspect of SiC that must be examined as part ofthe feasibility assessment for its application to LWR fuel rods. In this study, an experimental assessment of thermal shockperformance of a monolithic alpha phase SiC tube was conducted by quenching the material from high temperature (up to1200ºC) into room temperature water. Post-quenching assessment was carried out by a Scanning Electron Microscopy (SEM)image analysis to characterize fractures in the material. This paper assesses the effects of pre-existing pores on SiC claddingbrittle fracture and crack development/propagation during the reflood phase. Proper extension of these guidelines to anSiC/SiC ceramic matrix composite (CMC) cladding design is discussed.
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Lee, Youho,Mckrell, Thomas J.,Kazimi, Mujid S. Korean Nuclear Society 2013 Nuclear Engineering and Technology Vol.45 No.6
SiC has been under investigation as a potential cladding for LWR fuel, due to its high melting point and drastically reduced chemical reactivity with liquid water, and steam at high temperatures. As SiC is a brittle material its behavior during the reflood phase of a Loss of Coolant Accident (LOCA) is another important aspect of SiC that must be examined as part of the feasibility assessment for its application to LWR fuel rods. In this study, an experimental assessment of thermal shock performance of a monolithic alpha phase SiC tube was conducted by quenching the material from high temperature (up to $1200^{\circ}C$) into room temperature water. Post-quenching assessment was carried out by a Scanning Electron Microscopy (SEM) image analysis to characterize fractures in the material. This paper assesses the effects of pre-existing pores on SiC cladding brittle fracture and crack development/propagation during the reflood phase. Proper extension of these guidelines to an SiC/SiC ceramic matrix composite (CMC) cladding design is discussed.
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