Abstract
In this work, the hot-corrosion behavior of silicon nitride-bonded silicon carbide composite (SCN) in aluminum melt are studied especially on the similar environment to the actual working condition. The thermal shock resistance and cyclic thermal shock behavior of this composite are also studied. Pre-oxidized specimens corroded more extensively than as-cut specimens in Al melt at the same temperature. The specimens, which were pre-oxidized and immersed in Al melt, showed a severe reduction in their mean compressive strength. The mass changes of SCN oxidized at 850 °C-1200 °C followed parabolic kinetics but pore neck blocking happened at 1200 °C. The activation energy was found to be 223 kJ/mol. In water quenching test of SCN composite, the critical thermal shock temperature difference was about 425 °C. The repeated thermal stress by the cyclic heating and cooling caused the decrease in strength.
| Original language | English |
|---|---|
| Pages (from-to) | 23-28 |
| Number of pages | 6 |
| Journal | Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan |
| Volume | 109 |
| Issue number | 1265 |
| DOIs | |
| Publication status | Published - Jan 1 2001 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
Cite this
Hot-corrosion behavior of silicon nitride-bonded silicon carbide. / Woo, Sang Kook; Han, In Sub; Ri, Gyeong Geun; Park, Sung Chul; Cho, Kurn; Jang, Byung Koog.
In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 109, No. 1265, 01.01.2001, p. 23-28.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Hot-corrosion behavior of silicon nitride-bonded silicon carbide
AU - Woo, Sang Kook
AU - Han, In Sub
AU - Ri, Gyeong Geun
AU - Park, Sung Chul
AU - Cho, Kurn
AU - Jang, Byung Koog
PY - 2001/1/1
Y1 - 2001/1/1
N2 - In this work, the hot-corrosion behavior of silicon nitride-bonded silicon carbide composite (SCN) in aluminum melt are studied especially on the similar environment to the actual working condition. The thermal shock resistance and cyclic thermal shock behavior of this composite are also studied. Pre-oxidized specimens corroded more extensively than as-cut specimens in Al melt at the same temperature. The specimens, which were pre-oxidized and immersed in Al melt, showed a severe reduction in their mean compressive strength. The mass changes of SCN oxidized at 850 °C-1200 °C followed parabolic kinetics but pore neck blocking happened at 1200 °C. The activation energy was found to be 223 kJ/mol. In water quenching test of SCN composite, the critical thermal shock temperature difference was about 425 °C. The repeated thermal stress by the cyclic heating and cooling caused the decrease in strength.
AB - In this work, the hot-corrosion behavior of silicon nitride-bonded silicon carbide composite (SCN) in aluminum melt are studied especially on the similar environment to the actual working condition. The thermal shock resistance and cyclic thermal shock behavior of this composite are also studied. Pre-oxidized specimens corroded more extensively than as-cut specimens in Al melt at the same temperature. The specimens, which were pre-oxidized and immersed in Al melt, showed a severe reduction in their mean compressive strength. The mass changes of SCN oxidized at 850 °C-1200 °C followed parabolic kinetics but pore neck blocking happened at 1200 °C. The activation energy was found to be 223 kJ/mol. In water quenching test of SCN composite, the critical thermal shock temperature difference was about 425 °C. The repeated thermal stress by the cyclic heating and cooling caused the decrease in strength.
UR - http://www.scopus.com/inward/record.url?scp=0035111820&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035111820&partnerID=8YFLogxK
U2 - 10.2109/jcersj.109.23
DO - 10.2109/jcersj.109.23
M3 - Article
AN - SCOPUS:0035111820
VL - 109
SP - 23
EP - 28
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1265
ER -