| 표면조도에 따른 원자로급 흑연(IG110)의 산화거동 |
| 조광연, 김경자, 임연수1, 지세환2 |
요업기술원 나노소재팀
1명지대학교 신소재공학과
2원자력 연구소 원자력수소사업추진반 |
| Oxidation Behavior of Nuclear Graphite(IG110) with Surface Roughness |
| Kwang-Youn Cho, Kyong-Ja Kim, Yun-Soo Lim1, Se-Hwan Chi2 |
Division of Nano Materials Application, KICET
1Division of Materials Science and Engineering, Myongji University
2Department of Nuclear Hydrogen Project, KAERI |
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| ABSTRACT |
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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. |
| Key words:
Graphite, Oxidation, Nuclear, Surface roughness |
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