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代替タイトル: Development of a prototype thermodynamic database for Nd-Fe-B permanent magnets

説明:

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.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: CALPHAD, permanent magnet, phase equilibria

刊行年月日: 2022-01-30

出版者: Japan Society of Powder and Powder Metallurgy

掲載誌:

• Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy (ISSN: 05328799) vol. 69 issue. Supplement p. 52-62

研究助成金:

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.2497/jjspm.69.S52

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更新時刻: 2024-01-05 22:11:33 +0900

MDRでの公開時刻: 2023-05-15 10:27:39 +0900