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根据钍基熔盐堆高温环境辐射测量需求,采用具有高温抗氧化Si C涂层的炭/炭复合材料作为待测活化片的载体材料,介绍了采用炭/炭复合材料作为辐照载体的优越性,对其进行了成分和热分析测试,并详细描述了带有炭/炭复合材料的一组活化片和不带有炭/炭复合材料的另一组活化片同时在铀氢锆脉冲堆的径向实验孔道中进行中子辐照的实验过程。通过比较两组活化片的单核反应率,详细分析了炭/炭复合材料对活化片辐照结果的影响。结果表明,载体采用涂层为Si C的炭/炭复合材料,并且壁厚为几个毫米时,对多种活化片的中子辐照结果影响很小,可以作为高温环境下辐照材料的载体。
According to the requirement of high-temperature radiation measurement of thorium-based molten salt reactor, the carbon / carbon composite with high temperature anti-oxidation Si C coating is used as the support material for the active sheet to be tested, and the superiority of using carbon / carbon composite as the radiation carrier is introduced Sex, carried out the composition and thermal analysis of the test, and described in detail with a group of activated carbon with carbon / carbon composites and carbon / carbon composites without activating another set of tablets at the same time in the uranium-hydrogen zirconium pulse reactor Of the radial experimental hole in the experimental process of neutron irradiation. The effects of carbon / carbon composites on the irradiation results of activated tablets were analyzed in detail by comparing the single nuclear reaction rates of the two activated tablets. The results show that the carrier is carbon / carbon composite coated with Si C, and when the wall thickness is a few millimeters, it has little effect on the results of neutron irradiation of a variety of activated sheets and can be used as a radiation material under high temperature environment Vector.