Iron-based amorphous powder attracts increasing attention because of its excellent soft magnetic properties and low iron loss at high frequencies. The development of an insulating layer on the surface of the amorphous soft magnetic powder is important for minimizing the eddy current loss and enhancing the energy efficiency of highfrequency devices by further increasing the electrical resistivity of the cores. In this study, a hybrid insulating coating layer is investigated to compensate for the limitations of monolithic organic or inorganic coating layers. Fe2O3 nanoparticles are added to the flexible silicon-based epoxy layer to prevent magnetic dilution; in addition TiO2 nanoparticles are added to enhance the mechanical durability of the coating layer. In the hybrid coating layer with optimal composition, the decrease in magnetic permeability and saturation magnetization is suppressed.

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

• 김정준(국민대학교 신소재공학부) | Jungjoon Kim (School of Materials Science and Engineering, Kookmin University)
• 김선겸(국민대학교 신소재공학부) | Sungyeom Kim (School of Materials Science and Engineering, Kookmin University)
• 김영균(고등기술연구원) | Youngkyun Kim (Advanced Materials & Processing Center, Institute of Advanced Engineering)
• 장태석(선문대학교 신소재공학부) | Taesuk Jang (Department of Advanced Materials Engineering, Sun Moon University)
• 김휘준(한국생산기술연구원) | Hwi-jun Kim (Division of New Materials Engineering, Korea Institute of Industrial Technology)
• 김용진(한국재료연구원) | Youngjin Kim (Powder/Ceramic Research Division, Korea Institute of Materials Science)
• 최현주(국민대학교 신소재공학부) | Hyunjoo Choi (School of Materials Science and Engineering, Kookmin University) Corresponding Author