抄録
Al2O3/SiC composites were prepared by hot-pressing in order to investigate the microstructural characteristics and nano-disperse behavior of alumina matrix composites. The grain size of the monolithic alumina ceramics increased with increasing hot-pressing temperature, and the exaggerated grain growth occurred above 1800 °C. However, the addition of SiC particulates effectively suppressed the growth of the alumina matrix in the composites. The average matrix grain size was smaller and the grain size distribution was narrower than those of the monolithic alumina ceramics. Very fine SiC particulates were well dispersed in composites as nano-sized intragranular grains in the alumina matrix, on the other hand, coarse SiC particulates were found to exist at grain boundaries of the alumina matrix. The intragranular SiC seems to be trapped like a pores in the matrix grains during the densification by hot-pressing. It is concluded that nano-sized SiC particulates are grain growth inhibitors and microstructural stabilizers thus giving a uniform microstructures with fine grains.
| 元の言語 | 英語 |
|---|---|
| ページ（範囲） | 863-867 |
| ページ数 | 5 |
| ジャーナル | Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan |
| 巻 | 102 |
| DOI | |
| 出版物ステータス | 出版済み - 1 1 1994 |
| 外部発表 | Yes |
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All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
これを引用
Control of microstructure of alumina ceramics by dispersion of nano SiC particulates. / Jang, Byungkoog; Enoki, Manabu; Kishi, Teruo.
：: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, 巻 102, 01.01.1994, p. 863-867.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - Control of microstructure of alumina ceramics by dispersion of nano SiC particulates
AU - Jang, Byungkoog
AU - Enoki, Manabu
AU - Kishi, Teruo
PY - 1994/1/1
Y1 - 1994/1/1
N2 - Al2O3/SiC composites were prepared by hot-pressing in order to investigate the microstructural characteristics and nano-disperse behavior of alumina matrix composites. The grain size of the monolithic alumina ceramics increased with increasing hot-pressing temperature, and the exaggerated grain growth occurred above 1800 °C. However, the addition of SiC particulates effectively suppressed the growth of the alumina matrix in the composites. The average matrix grain size was smaller and the grain size distribution was narrower than those of the monolithic alumina ceramics. Very fine SiC particulates were well dispersed in composites as nano-sized intragranular grains in the alumina matrix, on the other hand, coarse SiC particulates were found to exist at grain boundaries of the alumina matrix. The intragranular SiC seems to be trapped like a pores in the matrix grains during the densification by hot-pressing. It is concluded that nano-sized SiC particulates are grain growth inhibitors and microstructural stabilizers thus giving a uniform microstructures with fine grains.
AB - Al2O3/SiC composites were prepared by hot-pressing in order to investigate the microstructural characteristics and nano-disperse behavior of alumina matrix composites. The grain size of the monolithic alumina ceramics increased with increasing hot-pressing temperature, and the exaggerated grain growth occurred above 1800 °C. However, the addition of SiC particulates effectively suppressed the growth of the alumina matrix in the composites. The average matrix grain size was smaller and the grain size distribution was narrower than those of the monolithic alumina ceramics. Very fine SiC particulates were well dispersed in composites as nano-sized intragranular grains in the alumina matrix, on the other hand, coarse SiC particulates were found to exist at grain boundaries of the alumina matrix. The intragranular SiC seems to be trapped like a pores in the matrix grains during the densification by hot-pressing. It is concluded that nano-sized SiC particulates are grain growth inhibitors and microstructural stabilizers thus giving a uniform microstructures with fine grains.
UR - http://www.scopus.com/inward/record.url?scp=0028514698&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028514698&partnerID=8YFLogxK
U2 - 10.2109/jcersj.102.863
DO - 10.2109/jcersj.102.863
M3 - Article
AN - SCOPUS:0028514698
VL - 102
SP - 863
EP - 867
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
ER -