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Crystallization of Nd<sub>2</sub>Fe<sub>17</sub>B<sub>x</sub> from its stoichiometric melt composition
Gao, J. R. and Volkmann, T. and Yang, S. and Reutzel, S. and Herlach, D. M. and Song, X. P. (2007) Crystallization of Nd<sub>2</sub>Fe<sub>17</sub>B<sub>x</sub> from its stoichiometric melt composition. Journal of Alloys and Compounds, 433, pp. 356-362. Elsevier. DOI: 10.1016/j.jallcom.2006.06.090.
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Abstract
Containerless solidification of gas-atomized Nd<sub>10</sub>Fe<sub>85</sub>B<sub>5</sub> melt droplets was carried out using the drop tube technique. The phase constituents and microstructure of the solidified samples were investigated by means of powder X-ray diffraction analysis, thermomagnetic analysis, and scanning electron microscopy. Besides <font face="symbol">g</font>-Fe and Nd<sub>2</sub>Fe<sub>14</sub>B, non-equilibrium phases such as Nd<sub>2</sub>Fe<sub>17</sub>B<sub>x</sub>, <font face="symbol">e</font>-Nd, and Nd<sub>1.1</sub>Fe<sub>4</sub>B<sub>4</sub> were identified. The microstructure of the samples was categorized into three types, including a quasi-single phase one that consists mainly of Nd<sub>2</sub>Fe<sub>17</sub>B<sub>x</sub> dendrites. The lattice parameters and Curie temperature of Nd<sub>2</sub>Fe<sub>17</sub>B<sub>x</sub> were determined, and compared with those of the same type phase crystallized in Nd-rich Nd-Fe-B melt compositions. The results were discussed with respect to the stoichiometry, formation as well as potential applications of Nd<sub>2</sub>Fe<sub>17</sub>B<sub>x</sub>.
| Document Type: | Article | ||||||||||||||
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| Title: | Crystallization of Nd<sub>2</sub>Fe<sub>17</sub>B<sub>x</sub> from its stoichiometric melt composition | ||||||||||||||
| Authors: |
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| Date: | 2007 | ||||||||||||||
| Journal or Publication Title: | Journal of Alloys and Compounds | ||||||||||||||
| Refereed publication: | Yes | ||||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||||
| Volume: | 433 | ||||||||||||||
| DOI: | 10.1016/j.jallcom.2006.06.090 | ||||||||||||||
| Page Range: | pp. 356-362 | ||||||||||||||
| Publisher: | Elsevier | ||||||||||||||
| Status: | Published | ||||||||||||||
| Keywords: | Unterkühlung von Materialien | ||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||
| HGF - Program: | Space | ||||||||||||||
| HGF - Program Themes: | W FR - Forschung unter Weltraumbedingungen | ||||||||||||||
| DLR - Research area: | Space | ||||||||||||||
| DLR - Program: | W FR - Forschung unter Weltraumbedingungen | ||||||||||||||
| DLR - Research theme (Project): | W - Vorhaben Materialforschung unter Mikro-g (old) | ||||||||||||||
| Location: | Köln-Porz | ||||||||||||||
| Institutes and Institutions: | Institute of Materials Physics in Space > Institute of Space Simulation > Center for Solidification of Undercooled Melts (ZEUS) | ||||||||||||||
| Deposited By: | Dr.rer.nat. Sven Reutzel | ||||||||||||||
| Deposited On: | 08 Jan 2008 | ||||||||||||||
| Last Modified: | 14 Jan 2010 23:02 |
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