| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1448424 | Acta Materialia | 2010 | 8 Pages |
Abstract
Microstructural evolution of hydrogenation–disproportionation–desorption–recombination processed Nd12.5Fe72.8Co8.0B6.5Ga0.2 powder has been investigated in relation to coercivity development during the desorption recombination process. Coercivity increases when residual NdH2 is completely dehydrogenated and the decomposed Nd is segregated at the grain boundaries of the Nd2Fe14B phase. Three-dimensional atom probe (3DAP) analysis indicates the segregation of Ga at the grain boundary. The reason for the enhancement of the coercivity by the trace addition Ga is discussed based on the 3DAP results.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
H. Sepehri-Amin, W.F. Li, T. Ohkubo, T. Nishiuchi, S. Hirosawa, K. Hono,