Effect of grain size of stainless steel on oxidation rate under oxygen pressure controlled by Mo/MoO2 oxygen buffer.
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概要
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Oxidation behavior of the stainless steel fuel cladding is one of the important information to clarify the oxygen balance in the fast breeder reactor fuel pin during irradiation. In our previous work<SUP>(1)</SUP>, oxidation behavior of SUS-316 stainless steel was investigated under oxygen potentials controlled by Mo/MoO<SUB>2</SUB> and NbO<SUB>2</SUB>/Nb<SUB>2</SUB>O<SUB>5</SUB> oxygen buffers, and the following information was obtained : The reaction product due to oxidationwas a mixture of Cr<SUB>2</SUB>O<SUB>3</SUB> and MnCr<SUB>2</SUB>O<SUB>4</SUB>, and the oxidation rate was controlled by the outward diffusion of Cr in stainless steel ; this diffusion process was ascribed to the grain boundary diffusion because the activation energy, calculated from the temperature dependence of the parabolic rate constant, was close to that of the grain boundary diffusion of Cr in stainless steel rather than that of the lattice diffusion<SUP>(2)</SUP>.
- 一般社団法人 日本原子力学会の論文
著者
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KOGA Katsumi
Department of Applied Genetics and Pest Management, Faculty of Agriculture, Kyushu University Gradua
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Sugisaki Masayasu
Department Of Nuclear Engineering Faculty Of Engineering Kyushu University
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Furuya Hirotaka
Department Of Applied Quantum Physics And Nuclear Engineering Division Of Engineering Graduate Schoo
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Saito Minoru
Department Of Agricultural Engineering Faculty Of Agriculture Kagawa University
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KOGA Katsumi
Department of Nuclear Engineering Faculty of Engineering Kyushu University
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SAITO Minoru
Department of Nuclear Engineering Faculty of Engineering Kyushu University
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