Compatibility of materials for advanced blanket with liquid LiPb
Compatibility of materials for advanced blanket with liquid LiPb
复制标题
先进毯材料与液态锂铅的相容性
DOI：
10.1109/fusion.2009.5226459
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
S. Konishi
中科院分区：
文献类型：
--
作者：
C. Park;K. Noborio;R. Kasada;Y. Yamamoto;G. Nam;S. Konishi
测量了包层结构材料在高温流动条件下Li铅液态金属腐蚀(或冲刷)行为的参数数据，以评价其相容性。这对于高温毯子的可行性至关重要。利用旋转圆盘材料的装置测量了流体速度对圆盘上径向位置的影响。以不锈钢(SUS316)为参比材料，尼特SiCf/碳化硅复合材料(ϕ35×2 mm)为参比材料，在90 0℃、相对流速10.4 7∼36.65 cm/S条件下腐蚀1000h，用光学显微镜、精细称重、扫描电子显微镜/能谱和原子力显微镜等手段研究了材料在腐蚀过程中的传质、显微组织和成分变化等相容性特征。结果表明，Nite SiCf/SiC复合材料与液态锂铅的润湿性较差，表现出良好的相容性。然而，涂覆C的纤维的一部分被金属浸湿，并观察到金属元素的析出。
Parametric data of the corrosion (or erosion) behavior of blanket structural materials by LiPb liquid metals in flow conditions at high temperature with LiPb stream were measured to evaluate the compatibility. That is essential for the feasibility of high temperature blanket. An apparatus to rotate disk materials in liquid LiPb metal was used to measure the effect of flow speed as a function of the radial position on the disk. The materials used in this study were the Stainless steel (SUS316) for the reference and NITE SiCf/SiC composite (ϕ 35×2 mm), exposed to relative flow velocity of 10.47∼36.65 cm/s at 900 °C for 1000 h. The compatibility characteristics such as the mass transfer, change of microstructure and compositions, etc. of the specimens during the corrosion process were examined by optical microscope, fine scale weight measurement, SEM/EDX and AFM. The results showed that the NITE SiCf/SiC composites had poor wettability with the liquid LiPb and presented the good compatibility. However a part of the fiber coated with C was wet with the metal and a precipitation of metallic elements were observed.