Fig. 3: Atom probe tomography (APT) characterization of 1.0LaB6-Cu.
From: Manufacturing of high strength and high conductivity copper with laser powder bed fusion
a 3D reconstruction of Cu, La and B distribution in the L-PBF fabricated 1.0LaB6-Cu. b Enlarged view of the precipitate−1 (P1). c The 1-D concentration profile along the axis of the cylindrical volume-of-interest in (b). d is the enlarged view of P2 and (e) is the 1-D concentration profile crossing P2. Both concentration profiles showing depletion of La and B in Cu matrix. La enrichment is spatially correlated with B. Note that the La and B enriched zones do not correspond to the real shape and dimension of the LaB6 nanoparticles due to the significant different voltages required for the evaporation of LaB6 and Cu during APT (see another dataset in Supplementary Fig. 5). The error bars denote the standard deviation of the mean. M: Matrix, P: Precipitate. Source data are provided as a Source Data file.
