Aluminum nitride (AlN) has excellent electrical insulation property, high thermal conductivity, and a low thermal expansion coefficient; therefore, it is widely used as a heat sink, heat-conductive filler, and heat dissipation substrate. However, it is well known that the AlN-based materials have disadvantages such as low sinterability and poor mechanical properties. In this study, the effects of addition of various amounts (1-6 wt.%) of sintering additives Y2O3 and Sm2O3 on the thermal and mechanical properties of AlN samples pressureless sintered at 1850oC in an N2 atmosphere for a holding time of 2 h are examined. All AlN samples exhibit relative densities of more than 97%. It showed that the higher thermal conductivity as the Y2O3 content increased than the Sm2O3 additive, whereas all AlN samples exhibited higher mechanical properties as Sm2O3 content increased. The formation of secondary phases by reaction of Y2O3, Sm2O3 with oxygen from AlN lattice influenced the thermal and mechanical properties of AlN samples due to the reaction of the oxygen contents in AlN lattice.

Abstract
1. 서 론
2. 실험방법
3. 결과 및 고찰
4. 결 론
References

• 황진욱(한국세라믹기술원/경상대학교 고분자공학과) | Jin Uk Hwang (Fibrous Ceramics & Aerospace Materials Center, Convergence R&D Division, Korea Institute of Ceramic Engineering & Technology/Functional nano lab. Department of polymer engineering, Gyeongsang National University)
• 문소윤(한국세라믹기술원) | So Youn Mun (Fibrous Ceramics & Aerospace Materials Center, Convergence R&D Division, Korea Institute of Ceramic Engineering & Technology)
• 남상용(경상대학교 고분자공학과) | Sang Yong Nam (Functional nano lab. Department of polymer engineering, Gyeongsang National University)
• 도환수(한국세라믹기술원) | Hwan Soo Dow (Fibrous Ceramics & Aerospace Materials Center, Convergence R&D Division, Korea Institute of Ceramic Engineering & Technology) Corresponding Author