인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
In this study, we investigated the effects of boron addition on glass forming ability (GFA) and soft magnetic properties of Fe<sub>73.5</sub>Si<sub>13.5-x</sub>B<sub>9+x</sub>Nb₃Cu₁ nanocrystalline alloys. By increasing the boron content in the alloys, GFA is expected to be increased via calculation on thermodynamic factors including mixing enthalpy, mixing entropy, and atomic radius differences. This enhancement in GFA is highly beneficial for powder production via gas atomization. Since gas atomization typically exhibits a lower cooling rate compared to the melt spinning process, achieving an amorphous structure is more challenging. However, by improving the GFA through alloy design, amorphous phase formation was successfully demonstrated even under these conditions. As a result, it was confirmed that the fully amorphous powders exhibited significantly improved coercivity compared to powders with initial crystallites. This alloy-design-based approach not only contributes to cost reduction in processing by enabling amorphous formation under less stringent cooling conditions, but also leads to enhanced magnetic properties.
본문·목차
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