Quantitative laser atom probe analyses of hydrogenation-disproportionated Nd-Fe-B powders.
Ultramicroscopy
; 111(6): 615-8, 2011 May.
Article
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| MEDLINE
| ID: mdl-21146306
ABSTRACT
We report a successful atom probe tomography of hydrides in hydrogenation-disproportionated Nd-Fe-B powder using a green femtosecond laser. The atom probe specimens were prepared from one particle of powder using the focused ion beam lift-out method. The atom probe tomography taken from an α-Fe/NdH(2) structure suggested that B and Ga (trace added element) were partitioned in the NdH(2) phase. The hydrogen concentration of 64 at% determined from the atom probe analysis was in excellent agreement with the stoichiometry of the NdH(2) phase.
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2011
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