| $Al_2O_3/SiC$ 나노복합체의 상압소결 및 역학적 특성에 미치는 볼밀분쇄와 소결온도의 영향 |
| 류정호, 나석호, 이재형, 조성재1 |
영남대학교 무기재료공학과
1한국표준과학연구원 소재특성평가센터 |
| The Effect of Ball Milling and Sintering Temperatures on the Sintering Behaviors and Mechanical Properties of $Al_2O_3/SiC$ Nanocomposites |
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| ABSTRACT |
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Al2O3/SiC nanocomposites are fabricated through intensive ball milling to mix fine SiC particles uniformly with the Al2O3 powder. Another role of milling is to reduce particle sizes by crushing particles as well as agglomerates. However, balls are worn during ball milling and the sample powder mixtures pick up to weight loss of the balls. In this study, pressureless sintering was performed to obtain Al2O3/SiC nanocomposites. It was found that the wear rate of zirconia balls during milling was considerable, and the zirconia addition after even a few hours of ball milling could increase the sintering rates of the nanocomposites significantly. Thus, addition of ZrO2 changed the sintering behaviors as well as mechanical properties of Al2O3/SiC nanocomposites. |
| Key words:
Nanocomposites, $Al_2O_3/SiC$, SiC, Ball Milling, Sintering |
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