Abstract
Highly-coercive YCo 5-based nanograined powders with composition Y x Co 100− x ( x=16.8–20) have been synthesized by mechanical milling of as-cast alloys and subsequently annealing them. The optimum magnetic properties have been obtained in Y 19.5Co 80.5 powders milled for 4 h and annealed at 950°C for 1 min with a coercivity of 16.0 kOe, a high M r/ M s ratio of 0.67 and a medium-strength maximum energy product ( BH) max of 7.7 MG Oe. Microstructure studies reveal that the Y 19.5Co 80.5 powders have a nearly single YCo 5 structure with a grain size of about 30–40 nm. The high coercivity is attributed to the high anisotropy field of the YCo 5 phase and to its nanoscale grain size.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
