Co-Cr alloys are widely used in cutting tools and turbine components due to their high strength and resistance against wear and corrosion. However, scrap generated during hardfacing is often discarded due to impurities and oxidation, and research on its recycling remains limited. This study aimed to optimize the recycling process of Stellite 6 scrap to reduce waste and minimize costs while maintaining material quality. Melting, casting, and powdering processes were designed using HSC Chemistry, FactSage, and COMSOL Multiphysics, with optimization of key parameters such as the crucible material and temperature control. The recycled alloy and powder were analyzed using X-ray fluorescence analysis, inductively coupled plasma optical emission spectroscopy, and X-ray diffractometry, showing mechanical and chemical properties comparable to commercial Stellite 6. The Co and Cr contents were maintained, with a slight increase in Fe. These findings demonstrate the potential for producing high-quality recycled Stellite 6 materials, contributing to the sustainable utilization of metal resources in high-performance applications.

1. Introduction 
2. Experimental Section 
    2.1 실험 방법 
    2.2 특성 평가 
3. Results and Discussion 
    3.1 열역학적 계산 결과 
    3.2 열 전달 해석 결과 
    3.3 Stellite 6 스크랩 재활용 공정 주조재 분석 결과 
    3.4 Stellite 6 재활용 분말 분석 결과 
4. Conclusion 
Funding
Conflict of Interest 
Data Availability Statement 
Author Information and Contribution 
Acknowledgments
References

• 박경태(한국생산기술연구원 국가희소금속센터) | Kyoungtae Park (Korea Institute of Industrial Technology, Incheon 21655, Republic of Korea) Corresponding author
• 심재진(한국생산기술연구원 국가희소금속센터) | JaeJin Sim (Korea Institute of Industrial Technology, Incheon 21655, Republic of Korea) Corresponding author
• 이용관(한국생산기술연구원 국가희소금속센터, 고려대학교 신소재공학과) | YongKwan Lee (Korea Institute of Industrial Technology, Incheon 21655, Republic of Korea, Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea)
• 김현철(한국생산기술연구원 국가희소금속센터, 고려대학교 신소재공학과) | Hyun-chul Kim (Korea Institute of Industrial Technology, Incheon 21655, Republic of Korea, Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea)
• 김명석(한국생산기술연구원 국가희소금속센터, 고려대학교 신소재공학과) | Myungsuk Kim (Korea Institute of Industrial Technology, Incheon 21655, Republic of Korea, Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea)
• 오승주(고려대학교 신소재공학과) | Soong Ju Oh (Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea)