A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FUEL CLAD, FUEL ROD AND FUEL ROD MANUFACTURING METHOD
PROBLEM TO BE SOLVED: To provide a fuel clad excellent in corrosion resistance and productivity capable of making the joint strength of a junction between a tube body and an end plug be relatively stronger.SOLUTION: The fuel clad composed of a fiber-reinforced ceramic base composite material, includes: a tube body 20 which can house a plurality of fuel pellets at the inner side of an inner wall 25 in the radial direction; and an end plug 30 fitted at the outer side of the tube body 20 in the axial direction. The end plug 30 has an almost circular columnar protrusion part 35 which protrudes from a lid part 32 to the inner side in the axial direction, whose axis center extends in the axial direction and whose outer face 36 faces the inner wall 25 in the radial direction. The protrusion part 35 contains the same ceramics as a base material of a composite material structuring the tube body 20 and a metal whose linear expansion coefficient is greater than the ceramics, and it is constituted in a manner that the ratio between the ceramics and the metal varies in the radial direction. The outer face 36 is constituted by the ceramics so as to be bounded to the inner wall 25.SELECTED DRAWING: Figure 2
【課題】耐食性及び生産性に優れており、且つ管本体と端栓との接合部の強度を比較的高いものにすることが可能な燃料被覆管を提供する。【解決手段】本実施形態によれば、燃料被覆管は、繊維強化セラミックス基複合材料で構成されており、内壁２５の径方向内側に複数の燃料ペレットを収容可能な管本体２０と、当該管本体２０の軸方向外側に結合される端栓３０と、を有する。端栓３０は、蓋部３２から軸方向内側に突出しており且つ軸方向に軸心が延びる略円柱状をなしており、外面３６が径方向において内壁２５と対向する突出部３５とを有している。突出部３５は、管本体２０を構成する複合材料のうち母材と同じセラミックスと、当該セラミックスに比べて線膨張係数が大きい金属とを含み、径方向において当該セラミックスと当該金属との比率が変化するよう構成されており、外面３６は、内壁２５と接合されるよう当該セラミックスで構成されている。【選択図】図２
FUEL CLAD, FUEL ROD AND FUEL ROD MANUFACTURING METHOD
PROBLEM TO BE SOLVED: To provide a fuel clad excellent in corrosion resistance and productivity capable of making the joint strength of a junction between a tube body and an end plug be relatively stronger.SOLUTION: The fuel clad composed of a fiber-reinforced ceramic base composite material, includes: a tube body 20 which can house a plurality of fuel pellets at the inner side of an inner wall 25 in the radial direction; and an end plug 30 fitted at the outer side of the tube body 20 in the axial direction. The end plug 30 has an almost circular columnar protrusion part 35 which protrudes from a lid part 32 to the inner side in the axial direction, whose axis center extends in the axial direction and whose outer face 36 faces the inner wall 25 in the radial direction. The protrusion part 35 contains the same ceramics as a base material of a composite material structuring the tube body 20 and a metal whose linear expansion coefficient is greater than the ceramics, and it is constituted in a manner that the ratio between the ceramics and the metal varies in the radial direction. The outer face 36 is constituted by the ceramics so as to be bounded to the inner wall 25.SELECTED DRAWING: Figure 2
【課題】耐食性及び生産性に優れており、且つ管本体と端栓との接合部の強度を比較的高いものにすることが可能な燃料被覆管を提供する。【解決手段】本実施形態によれば、燃料被覆管は、繊維強化セラミックス基複合材料で構成されており、内壁２５の径方向内側に複数の燃料ペレットを収容可能な管本体２０と、当該管本体２０の軸方向外側に結合される端栓３０と、を有する。端栓３０は、蓋部３２から軸方向内側に突出しており且つ軸方向に軸心が延びる略円柱状をなしており、外面３６が径方向において内壁２５と対向する突出部３５とを有している。突出部３５は、管本体２０を構成する複合材料のうち母材と同じセラミックスと、当該セラミックスに比べて線膨張係数が大きい金属とを含み、径方向において当該セラミックスと当該金属との比率が変化するよう構成されており、外面３６は、内壁２５と接合されるよう当該セラミックスで構成されている。【選択図】図２
FUEL CLAD, FUEL ROD AND FUEL ROD MANUFACTURING METHOD
燃料被覆管、燃料棒及び燃料棒の製造方法
TAZAWA TOSHIYUKI (author) / KANO FUMIHISA (author) / HYODO YOSHIHIRO (author)
2017-04-13
Patent
Electronic Resource
Japanese
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