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TEM examination of phases formed between U-Pu-Zr fuel and Fe

机译:TEM检查U-Pu-Zr燃料与Fe之间形成的相

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Exposure to high temperatures and irradiation results in interaction and interdiffusion between fuel and cladding constituents that can lead to formation of undesirable brittle or low-melting point phases. A diffusion couple study has been conducted to understand fuel-cladding interaction occurring between U-22Pu-4Zr (in wt%) fuel and pure Fe at elevated temperatures. The phases formed within fuel cladding chemical interaction (FCCI) layer have been characterized in the transmission electron microscope (TEM). The phases formed within FCCI layer have been identified as Fe2U (Fd-3m), FeU6 (I4/mcm), Fe2Zr (Fd-3m), FeZr2 (I4/mcm), Fe2Pu (Fd-3m), UZr2 (P6/mmm), beta-Zr (Im-3m), and ZrO2 (Fm-3m). Published by Elsevier B.V.
机译:暴露于高温和辐射下会导致燃料和覆层成分之间发生相互作用和相互扩散,从而导致形成不良的脆性或低熔点相。已经进行了扩散对研究,以了解在高温下U-22Pu-4Zr(重量%)燃料与纯铁之间发生的燃料-包层相互作用。燃料包壳化学相互作用(FCCI)层内形成的相已在透射电子显微镜(TEM)中进行了表征。在FCCI层内形成的相已确定为Fe2U(Fd-3m),FeU6(I4 / mcm),Fe2Zr(Fd-3m),FeZr2(I4 / mcm),Fe2Pu(Fd-3m),UZr2(P6 / mmm ),β-​​Zr(Im-3m)和ZrO2(Fm-3m)。由Elsevier B.V.发布

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