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Microstructural Changes and Magnetic Properties of Nanostructured Fe-Si-B-Cu Ribbon Cores Containing a Small Amount of Ca and Zr
Ca와 Zr을 소량 첨가한 나노결정 Fe-Si-B-Cu계 합금의 미세조직변화와 자기적특성
Su-Bong An, Su-Hwan Jang, Won-Wook Park, Keun-Yong Sohn안수봉, 장수환, 박원욱, 손근용
Korean J. Met. Mater. 2021;59(3):168-176. Published online 2021 Feb 19 DOI: https://doi.org/10.3365/KJMM.2021.59.3.168
Abstract
Nanocrystalline Fe-Si-B-Nb-Cu Finemet alloys show low saturation magnetic flux density compared to amorphous Fe-Si-B alloys. In the Fe-Si-B-Cu base amorphous alloys, Cu atoms form clusters which act as heterogeneous nucleation sites for α-Fe crystals. The addition of Ca element atoms, distributed along grain boundaries, helps inhibit grain growth and increase..... More
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Investigation of Color Change in Cu-Zn Alloys by Reflectivity and Color Difference Analysis
반사도와 색 차 분석을 이용한 Cu-Zn 합금의 색 변화 고찰
Yeon Beom Jeong, Sung Hwan Hong, Hae Jin Park, Young Seok Kim, Jeong Tae Kim, Hoo Dam Lee, Yun Jung Hwang, Young Hoon Lee, Ki Buem Kim정연범, 홍성환, 박혜진, 김영석, 김정태, 이후담, 황윤중, 이영훈, 김기범
Korean J. Met. Mater. 2018;56(3):171-176. Published online 2018 Mar 6 DOI: https://doi.org/10.3365/KJMM.2018.56.3.171
Abstract
The change in reflectivity of Cu-Zn alloys was investigated with the modulation of Zn content. The reflectivity of the prepared alloys were compared with pure copper and divided into wavelength regions corresponding to blue, green, yellow, and red colors. As the amounts of Zn increased, the difference in reflectivity of..... More
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