@inproceedings{c449fc08b4454ab680c94f00140d4986,
title = "Pore structure analysis of nuclear graphites IG-110 and NBG-18",
abstract = "Nuclear graphite is a major structural component for fuel elements and reactor cores. Some nuclear graphites have been considered as potential candidate structural materials for very high temperature reactor (VHTR) cores. The pore structure in nuclear graphite plays an important role in irradiation performance and oxidation resistance during operation. In this work, the pore structure of nuclear graphite grades IG-110 and NBG-18 was analyzed and compared through calculation and visualized images characterization. Apparent density and porosity were calculated using a geometrical method. A Brunauer-Emmett- Teller (BET) measurement was applied to evaluate the specific surface area, the pore volume and the average pore size of open pores based on the nitrogen adsorption and desorption isotherms at 77.35K. The morphology of the pores within both nuclear graphites was characterized using scanning electron microscopy (SEM). The visualized two dimensional (2-D) and three dimensional (3-D) images were presented to directly reveal the pore structure of nuclear graphite. Cracks of different sizes on the inside surface of the pores were observed for NBG-18. The binder phase and the filler phase were characterized using SEM of the fractured surface of both graphites.",
author = "Zheng, {G. Q.} and P. Xu and K. Sridharan and Allen, {T. R.}",
year = "2011",
language = "English",
isbn = "9781118060001",
series = "Ceramic Transactions",
pages = "251--260",
booktitle = "Advances in Materials Science for Environmental and Nuclear Technology II",
note = "Advances in Materials Science for Environmental and Nuclear Technology II - Materials Science and Technology 2010 Conference and Exhibition, MS and T'10 ; Conference date: 17-10-2010 Through 21-10-2010",
}