【摘要】 利用光学显微镜、扫描电镜、X射线衍射分析、X射线能谱和图像分析仪等方法、手段,综合分析了U₃Si₂-Al弥散板型燃料板和主要质量问题,即燃料相的微观组织结构、燃料相和Al基体的相容性,燃料相的分析情况、狗骨形态、单板包壳厚度和芯体与包覆材料的结合质量等,以及它们对产品质量的影响。分析结果表明,U-7.7％Si铸态合金中,主要是U₃Si₂相,还含有约12％USi相,用正常轧制工艺生产的单板中,燃料相与铝基体发生轻微反应;芯体与包壳、框架与包壳的冶金结合质量差的主要原因是残留气体被封闭在板内;通过解剖检测结果证明涡流法与超声法检测结果是可靠的。更多还原

【Abstract】 The microstructure of U3Si2-Al plate-type fuel, that is the microstructure of fuel particles, compatibility of the fuel particles and Al matrix, fuel particles distribution , dogbone area morphology, clad and meat thickness, bone quality of clad/ frame and clad/fuel core, and the effect of these factors on products quality were comprehensively investigated and analyzed by means of optical microscopy (OM), scanning electron microscopy (SEM) , X-ray diffraction (XRD) , energy dispersive X-ray spectrometry (EDX) , image processing technique, etc.更多还原