TY - JOUR
T1 - Oxidation behavior of IG and NBG nuclear graphites
AU - Choi, Woong Ki
AU - Kim, Byung Joo
AU - Kim, Eung Seon
AU - Chi, Se Hwan
AU - Park, Soo Jin
PY - 2011/1/1
Y1 - 2011/1/1
N2 - This work studies the oxidation-induced characteristics of four nuclear graphites (NBG-17, NBG-25, IG-110, and IG-430). The oxidation characteristics of the nuclear graphites were measured at 600 °C. The surface properties of the oxidation graphites were characterized by means of scanning electron microscopy, X-ray photoelectron spectroscopy, and contact angle methods. The N2/77 K adsorption isotherm characteristics, including the specific surface area and micropore volume, were investigated by means of BET and t-plot methods. The experimental results show an increase in the average pore size of graphites; they also show that oxidation produces the surface functional groups on the graphite surfaces. The surface area of each graphite behaves in a unique manner. For example the surface area of NBG-17 increases slightly whereas the surface area of IG-110 increases significantly. This result confirms that the original surface state of each graphite is unique.
AB - This work studies the oxidation-induced characteristics of four nuclear graphites (NBG-17, NBG-25, IG-110, and IG-430). The oxidation characteristics of the nuclear graphites were measured at 600 °C. The surface properties of the oxidation graphites were characterized by means of scanning electron microscopy, X-ray photoelectron spectroscopy, and contact angle methods. The N2/77 K adsorption isotherm characteristics, including the specific surface area and micropore volume, were investigated by means of BET and t-plot methods. The experimental results show an increase in the average pore size of graphites; they also show that oxidation produces the surface functional groups on the graphite surfaces. The surface area of each graphite behaves in a unique manner. For example the surface area of NBG-17 increases slightly whereas the surface area of IG-110 increases significantly. This result confirms that the original surface state of each graphite is unique.
UR - https://www.scopus.com/pages/publications/78650699786
U2 - 10.1016/j.nucengdes.2010.10.007
DO - 10.1016/j.nucengdes.2010.10.007
M3 - Article
AN - SCOPUS:78650699786
SN - 0029-5493
VL - 241
SP - 82
EP - 87
JO - Nuclear Engineering and Design
JF - Nuclear Engineering and Design
IS - 1
ER -