Development of a prototype thermodynamic database for Nd-Fe-B permanent magnets
Source abstract
Abstract
For the Nd-Fe-B permanent magnets, a prototype thermodynamic database of the 8-element system (Nd, Fe, B, Al, Co, Cu, Dy, Ga) was constructed based on literature data and assessed parameters in the present work. The magnetic excess Gibbs energy of the Nd2Fe14B compound was reassessed using thoroughly measured heat capacity data. The Dy-Nd binary system was reassessed based on formation energies estimated from ab initio calculations. The constructed database was applied successfully for estimations of phase equilibria during the grain boundary diffusion processes (GBDP) and the reactions in the hydrogenation decomposition desorption recombination (HDDR) processes.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic Properties of Alloys · Hydrogen Storage and Materials · Metallurgical and Alloy Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Elements Strategy Initiative Center for Magnetic Materials (ESICMM), National Institute for Materials Science, Tsukuba, Japan
Department of Chemical Engineering and Materials Science, University of Hyogo, Hyogo, Japan
School of Engineering, Tohoku University, Sendai, Japan
Department of Material Science and Engineering, Tokyo Institute of Technology, Tokyo, Japan
Department of Materials Design Innovation Engineering, Nagoya Univ., Nagoya, Japan
Funding
Elements Strategy Initiative Center for Magnetic Materials · Ministry of Education, Culture, Sports, Science, and Technology
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