Metal-oxide nanoclusters in Fe–10%Cr alloy by ion implantation

C. Zheng 1 A. Gentils 1 J. Ribis V. A. Borodin 2 O. Kaïtasov 3 F. Garrido 2
1 CSNSM PS2
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
2 CSNSM PCI
CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
3 CSNSM SEMI
CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
Abstract : High contents of Al+ and O+ ions were implanted sequentially into high purity Fe–10%Cr alloy thin foils at room temperature. The as-implanted foils were then studied by transmission electron microscopy (TEM) using the conventional TEM, energy dispersive X-ray (EDX), energy-filtered TEM (EFTEM) and high-resolution TEM (HRTEM) methods. In contrast to the conventional precipitate ensemble synthesis by implantation/annealing, the synthesis of clusters took place already at the implantation stage without requiring any subsequent thermal annealing in our case. The observed precipitates with diameters in the range of 3–25 nm were enriched in Al and O. The crystal lattice of precipitates corresponded to a cubic crystallographic structure of aluminium-rich oxide. The precipitate lattice alignment with the matrix was revealed for at least a part of precipitates. The early stage of nucleation outside thermal treatment is discussed in terms of point defect enhanced diffusion ensuring sufficient atomic transport to allow solute atom precipitation.
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Submitted on : Friday, September 4, 2015 - 4:10:34 PM
Last modification on : Tuesday, July 30, 2019 - 11:20:03 AM

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C. Zheng, A. Gentils, J. Ribis, V. A. Borodin, O. Kaïtasov, et al.. Metal-oxide nanoclusters in Fe–10%Cr alloy by ion implantation. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2015, 365, pp.319-324. ⟨10.1016/j.nimb.2015.08.020⟩. ⟨in2p3-01193154⟩

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