γ射线衰减法测定Al2O3-SiC-ZrO2陶瓷多孔相有效密度的实验研究

Q4 Energy

International Journal of Nuclear Energy Science and Technology Pub Date : 2017-08-16 DOI:10.1504/IJNEST.2017.10006743

S. Kenawy, E. Elmaghraby

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引用次数: 2

摘要

在本工作中，我们描述了使用多伽马线源来确定陶瓷材料的线性衰减系数。高精度锗探测器用于评估伽马射线传输。采用几何结构来增强对46.2keV的210Pb伽马射线的探测。随后进行了级联求和。通过将测得的不同能量下的线性衰减系数与XCOM数据库计算的相应值进行比较，确定了微孔Al2O3-SiC-ZrO2陶瓷的有效密度。研究了三种混合材料的五种不同组成比。结果表明，高分辨率伽马射线衰减在确定陶瓷有效密度方面的适用性，以及Al2O3-SiC复合材料作为燃料包壳候选替代材料的适用性。

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Experimental determination of effective density of Al2O3-SiC-ZrO2 ceramics porous phase using gamma-ray attenuation

In the present work, we describe the use of a multi-gamma lines source to determine the linear attenuation coefficient of ceramic material. High precision germanium detector is used to assess gamma-ray transmission. Geometry is adopted to enhance detection of 210Pb gamma-ray line at 46.2 keV. Cascade summing was followed up. The effective density of micro-porous Al2O3-SiC-ZrO2 ceramics was determined by comparing the measured linear attenuation coefficients at different energies with corresponding values computed by XCOM database. Five different composing ratios are investigated, for the three mixed materials. The results illustrate the applicability of high-resolution gamma-ray attenuation in the determination of effective density of ceramics and suitability of Al2O3-SiC composite as a candidate alternative for fuel cladding.

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来源期刊

International Journal of Nuclear Energy Science and Technology Energy-Nuclear Energy and Engineering

CiteScore

0.80

自引率

0.00%

发文量

期刊介绍： Today, nuclear reactors generate nearly one quarter of the electricity in nations representing two thirds of humanity, and other nuclear applications are integral to many aspects of the world economy. Nuclear fission remains an important option for meeting energy requirements and maintaining a balanced worldwide energy policy; with major countries expanding nuclear energy"s role and new countries poised to introduce it, the key issue is not whether the use of nuclear technology will grow worldwide, even if public opinion concerning safety, the economics of nuclear power, and waste disposal issues adversely affect the general acceptance of nuclear power, but whether it will grow fast enough to make a decisive contribution to the global imperative of sustainable development.