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http://dx.doi.org/10.4191/KCERS.2006.43.10.613

Oxidation Behavior of Nuclear Graphite(IG110) with Surface Roughness  

Cho, Kwang-Youn (Division of Nano Materials Application, KICET)
Kim, Kyong-Ja (Division of Nano Materials Application, KICET)
Lim, Yun-Soo (Division of Materials Science and Engineering, Myongji University)
Chi, Se-Hwan (Department of Nuclear Hydrogen Project, KAERI)
Publication Information
Journal of the Korean Ceramic Society / v.43, no.10, 2006 , pp. 613-618 More about this Journal
Abstract
Graphite is suitable materials as a moderator, reflector, and supporter of a nuclear reactor because of high tolerance to the high temperature and neutron irradiations. Because graphite is so weak to the oxidation, its oxidation study is essentially demanded for the operation and design of the nuclear reactor. This work focuses on the effect of the surface oxidation of graphite according to the surface treatment. With thermogravimeter (TG), oxidation characteristics of the isotropic graphite are measured at the three temperature areas, and oxidation ratio and amounts are estimated as changing the surface roughness. Furthermore, the polished graphite surface produced fom the surface treatment is investigated with the Raman spectroscopic study. Oxidation behaviors of the surface are also evaluated as elimination the polished layer by washing with strong sonication.
Keywords
Graphite; Oxidation; Nuclear; Surface roughness;
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