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J. Korean Ceram. Soc. > Volume 49(3); 2012 > Article
Journal of the Korean Ceramic Society 2012;49(3): 236.
doi: https://doi.org/10.4191/kcers.2012.49.3.236
망상형 탄소폼의 열처리 온도가 기계적 물성에 미치는 영향
한윤수, 이성민, 김형태
한국세라믹기술원 이천분원 엔지니어링세라믹센터
Effects of Heat-treatment Temperature on Mechanical Properties of Reticulated Carbon Foams
Yoon-Soo Han, Sung-Min Lee, Hyung-Tae Kim
Korea Institute of Ceramic Engineering and Technology(Icheon)
ABSTRACT
The reticulated carbon foam have been used for their excellent properties in terms of thermal management which is getting important in industrial field currently. In this study, we measure the mechanical properties of the reticulated carbon foam which is heat-treated at various temperature from the prepared low-density phenol foam. Simultaneously, we observe microstructures with high resolution transmission microscope and measure the residual oxygen content of carbon foams to figure out the relationship between the apparent change of properties such as weight loss and linear shrinkage during heat treatment. In conclusion, the carbon foam heat-treated at $1400^{circ}C$ shows the highest strength, and the mechanical behavior is believed to be strongly related to the creation of nano-size graphite crystals from the amorphous carbon during heat treatment. On the other hand, it is turned out that the weight loss occurred at the temperature under $1400^{circ}C$ comes from the elimination of oxygen in the form of $CO_2$ or CO, but no evidence is found on weight loss mechanism at the temperature above $1400^{circ}C$.
Key words: Carbon foam, Heat-treatment temperature, Crystallization
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