Influence of neutron irradiation on the microstructure of nuclear graphite: An X-ray diffraction study
Influence of neutron irradiation on the microstructure of nuclear graphite: An X-ray diffraction study
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DOI：
10.1016/j.jnucmat.2017.02.004
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发表时间：
2017-04
影响因子：
3.1
通讯作者：
Zhou Zhou-Zhou;W. Bouwman;H. Schut;T. V. Staveren;M. Heijna;C. Pappas
中科院分区：
文献类型：
--
作者：
Zhou Zhou-Zhou;W. Bouwman;H. Schut;T. V. Staveren;M. Heijna;C. Pappas
Neutron irradiation effects on the microstructure of nuclear graphite have been investigated by X-ray diffraction on virgin and low doses (∼ 1.3 and∼ 2.2 dpa), high temperature (750° C) irradiated samples. The diffraction patterns were interpreted using a model, which takes into account the turbostratic disorder. Besides the lattice constants, the model introduces two distinct coherent lengths in the c-axis and the basal plane, that characterise the volumes from which X-rays are scattered coherently. The methodology used in this work allows to quantify the effect of irradiation damage on the microstructure of nuclear graphite seen by X-ray diffraction. The results show that the changes of the deduced structural parameters are in agreement with previous observations from electron microscopy, but not directly related to macroscopic changes.
