Behavior of W–SiC/SiC dual layer tiles under LHD plasma exposure
Behavior of W–SiC/SiC dual layer tiles under LHD plasma exposure
复制标题
W-SiC/SiC 双层瓷砖在 LHD 等离子体暴露下的行为
DOI：
10.1016/j.jnucmat.2013.08.004
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
A. Kohyama
中科院分区：
文献类型：
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作者：
W. Mohrez;H. Kishimoto;Y. Kohno;S. Hirotaki;A. Kohyama
为了早日实现聚变动力反应堆，基本上需要高性能的第一壁和面向等离子体的组件（PFC）。作为其中最大的挑战之一，高热通量组件（HHFC）的设计和研发受到了重视。本报告提供了高性能HHFC材料的研发现状以及大型螺旋装置（LHD）的首次等离子体暴露测试结果。 W-SiC/SiC双层瓷砖（以下简称W-SiC/SiC）是采用NITE工艺开发的。这就是用于聚变反应堆的陶瓷复合材料钨装甲的现实概念。双层瓷砖的制作和测试在 LHD 偏滤器等离子暴露下（标称 10 MW/m2 最大热负荷，6 秒操作周期）下的生存能力。分析了微观结构的演变，包括裂纹和孔隙的形成，此外还通过超声波法和电子探针显微分析仪（EPMA）的C扫描图像评估了钨和SiC/SiC之间的结合层行为。热分析通过有限元方法进行，其中使用 ANSYS 代码版本 13.0。
Towards the early realization of fusion power reactors, high performance first wall and plasma facing components (PFCs) are essentially required. As one of the biggest challenges for this, high heat flux component (HHFC) design and R & D has been emphasized. This report provides the high performance HHFC materials R & D status and the first plasma exposure test result from large helical device (LHD). W–SiC/SiC dual layer tiles (hereafter, W–SiC/SiC) were developed by applied NITE process. This is the realistic concept of tungsten armor with ceramic composite substrates for fusion power reactors. The dual layer tiles were fabricated and tested their survival under the LHD divertor plasma exposure (Nominally 10 MW/m2maximum heat load for 6 s operation cycle). The microstructure evolution, including crack and pore formation, was analyzed, besides the behavior of bonding layer between tungsten and SiC/SiC was evaluated by C-scanning images of ultrasonic method and Electron probe Micro-analyzer (EPMA). Thermal analysis was conducted by finite element method, where ANSYS code release 13.0 was used.