STATUS OF HIGH FLUX ISOTOPE REACTOR IRRADIATION OF SILICON CARBIDE/SILICON CARBIDE JOINTS
STATUS OF HIGH FLUX ISOTOPE REACTOR IRRADIATION OF SILICON CARBIDE/SILICON CARBIDE JOINTS
复制标题
碳化硅/碳化硅接头高通量同位素反应堆辐照现状
DOI：
10.2172/1164258
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
J. McDuffee
中科院分区：
文献类型：
--
作者：
Y. Katoh;T. Koyanagi;J. Kiggans;N. Cetiner;J. McDuffee
碳化硅（SiC）接头的开发，保持足够的结构和功能特性，在预期的服务条件下，是一个关键的里程碑，建立先进的碳化硅复合材料技术的事故容限轻水堆（LWR）燃料和核心结构。中子辐照是决定轻水堆燃料在正常运行期间恶劣使用条件的最关键因素之一。目前的连接和辐照研究的首要目标是建立连接SiC基材料用作轻水堆燃料包壳的技术。本工作的目的是制造SiC接头试样，在未辐照条件下表征这些接头，并制备用于高通量同位素反应堆（HFIR）中对所制造的试样进行中子辐照研究的兔子胶囊。在橡树岭国家实验室或工业合作伙伴处通过七种不同的连接方法制备了化学气相沉积SiC的扭转剪切试验试样。在未辐照条件下对接头试样进行了剪切强度和微观结构表征。兔子辐照胶囊的设计和制造的中子辐照这些关节标本在LWR相关的温度。这些兔子胶囊已经在HFIR中开始辐照，计划在2015年初完成辐照至LWR相关剂量水平。«少
Development of silicon carbide (SiC) joints that retain adequate structural and functional properties in the anticipated service conditions is a critical milestone toward establishment of advanced SiC composite technology for the accident-tolerant light water reactor (LWR) fuels and core structures. Neutron irradiation is among the most critical factors that define the harsh service condition of LWR fuel during the normal operation. The overarching goal of the present joining and irradiation studies is to establish technologies for joining SiC-based materials for use as the LWR fuel cladding. The purpose of this work is to fabricate SiC joint specimens, characterize those joints in an unirradiated condition, and prepare rabbit capsules for neutron irradiation study on the fabricated specimens in the High Flux Isotope Reactor (HFIR). Torsional shear test specimens of chemically vapor-deposited SiC were prepared by seven different joining methods either at Oak Ridge National Laboratory or by industrial partners. The joint test specimens were characterized for shear strength and microstructures in an unirradiated condition. Rabbit irradiation capsules were designed and fabricated for neutron irradiation of these joint specimens at an LWR-relevant temperature. These rabbit capsules, already started irradiation in HFIR, are scheduled to complete irradiation to an LWR-relevant dose level inmore » early 2015.« less