SiAlON-based ceramics are a type of oxynitride ceramics, which can be used as cutting tools for heatresistant super alloys (HRSAs). These ceramics are derived from Si3N4 ceramics. SiAlON can be densified using gaspressure reactive sintering from mixtures of oxides and nitrides. In this study, we prepare an α-/β-SiAlON ceramic composite with a composition of Yb0.03Y0.10Si10.6Al1.4O1.0N15.0. The structure and mechanical/thermal properties of the densified SiAlON specimen are characterized and compared with those of a commercial SiAlON cutting tool. By observing the crystallographic structures and microstructures, the constituent phases of each SiAlON ceramic, such as α- SiAlON, β-SiAlON, and intergranular phases, are identified. By evaluating the mechanical and thermal properties, the contribution of the constituent phases to these properties is discussed as well.

Abstract
1. 서 론
2. 실험방법
    2.1. SiAlON 세라믹스의 제조
    2.2. SiAlON 세라믹스의 물성평가
3. 결과 및 고찰
4. 결 론
References

• 김성원(한국세라믹기술원 이천분원 엔지니어링세라믹센터) | Seongwon Kim (Engineering Ceramics Center, Korea Institute of Ceramic Engineering and Technology) Corresponding Author
• 최재형(한국세라믹기술원 이천분원 엔지니어링세라믹센터) | Jae-Hyung Choi (Engineering Ceramics Center, Korea Institute of Ceramic Engineering and Technology)