Oxidation behavior of IG and NBG nuclear graphites

Woong Ki Choi; Byung Joo Kim; Eung Seon Kim; Se Hwan Chi; Soo Jin Park

doi:10.1016/j.nucengdes.2010.10.007

Oxidation behavior of IG and NBG nuclear graphites

Woong Ki Choi
, Byung Joo Kim
, Eung Seon Kim
, Se Hwan Chi
, Soo Jin Park

Jeonju Institute of Machinery and Carbon Composites
Cyclotron Application Laboratory
Inha University

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	82-87
Number of pages	6
Journal	Nuclear Engineering and Design
Volume	241
Issue number	1
DOIs	https://doi.org/10.1016/j.nucengdes.2010.10.007
Publication status	Published - 1 Jan 2011
Externally published	Yes

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10.1016/j.nucengdes.2010.10.007

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title = "Oxidation behavior of IG and NBG nuclear graphites",

abstract = "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.",

author = "Choi, \{Woong Ki\} and Kim, \{Byung Joo\} and Kim, \{Eung Seon\} and Chi, \{Se Hwan\} and Park, \{Soo Jin\}",

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doi = "10.1016/j.nucengdes.2010.10.007",

language = "English",

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journal = "Nuclear Engineering and Design",

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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

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SN - 0029-5493

VL - 241

SP - 82

EP - 87

JO - Nuclear Engineering and Design

JF - Nuclear Engineering and Design

IS - 1

ER -

Oxidation behavior of IG and NBG nuclear graphites

Abstract

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