SiAlON-based ceramics are some of the most typical ceramic materials used as cutting tools for HRSA(Heat Resistant Super-Alloys). SiAlON can be fabricated using ceramic processing, such as mixing, granulation, compaction, and sintering. Spray drying is a widely-used method for producing a granular powder of controlled morphology and size with flowability. In this study, we report a systematic investigation aimed at optimizing spherical granule morphology by controlling spray-drying parameters such as gas flow and feed rate. Before spray drying, the viscosities of the raw material slurries were also optimized with the amount of dispersant added.

1. 서 론
 2. 실험 방법
  2.1 분말 제조
  2.2 분무건조 및 분말의 입자 형상 분석
 3. 결과 및 고찰
  3.1 슬러리의 점도평가
  3.2 분무건조 과립분말의 특성
 4. 결 론
 Acknowledgement
 References

• 최재형(한국세라믹기술원 이천분원 엔지니어링세라믹센터, 고려대학교 신소재공학과) | Jae-Hyeong Choi (Engineering Ceramics Center, Korea Institute of Ceramic Engineering & Technology, Department of Materials Science and Engineering, Korea University)
• 이소율(한국세라믹기술원 이천분원 엔지니어링세라믹센터) | Soyul Lee (Engineering Ceramics Center, Korea Institute of Ceramic Engineering & Technology)
• 한윤수(한국세라믹기술원 이천분원 엔지니어링세라믹센터) | Yoonsoo Han (Engineering Ceramics Center, Korea Institute of Ceramic Engineering & Technology)
• 이성민(한국세라믹기술원 이천분원 엔지니어링세라믹센터) | Sung-Min Lee (Engineering Ceramics Center, Korea Institute of Ceramic Engineering & Technology)
• 남산(고려대학교 신소재공학과) | Sahn Nahm (Department of Materials Science and Engineering, Korea University)
• 김성원(한국세라믹기술원 이천분원 엔지니어링세라믹센터) | Seongwon Kim (Engineering Ceramics Center, Korea Institute of Ceramic Engineering & Technology) Corresponding author