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Effects of Cu Addition on Magnetic Properties and Microstructures of Annealed Zr-Co-Cu-B Ribbons
- Authors
- Lee, Gyutae; Kim, Jongryoul
- Issue Date
- Nov-2017
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Melt-spinning; phase stability; rare-earth free magnet; rhombohedral Zr2Co11
- Citation
- IEEE TRANSACTIONS ON MAGNETICS, v.53, no.11, pp.1 - 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON MAGNETICS
- Volume
- 53
- Number
- 11
- Start Page
- 1
- End Page
- 4
- ISSN
- 0018-9464
- Abstract
- The magnetic properties and microstructures of Zr18Co82-xCuxB2 (x = 0, 1, 2, 3, and 4) ribbons fabricated by melt-spinning technique were investigated to analyze the effects of Cu addition on the stabilization of a hard magnetic rhombohedral Zr2Co11 phase. In as-spun ribbons, the proportion of the rhombohedral Zr2Co11 phase increased up to x = 3. In addition, it was found that the Cu addition inhibited the decomposition of the rhombohedral Zr2Co11 phase into Co and ZrCo5 phases during the post-annealing process. In particular, annealed Zr18Co79Cu3B2 ribbons showed that the recrystallized grains having rhombohedral Zr2Co11 phase were grown as aligned rod-shaped grains with lengths of 200 nm. Thus, the Cu addition increased the coercivity of both as-spun and annealed ribbons. A maximum coercivity of 4.7 kOe was obtained in Zr18Co80Cu2B2 ribbons annealed at 550 degrees C.
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Related Researcher
- Kim, Jong ryoul
- ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)