Ion beam analysis of as-received, H-implanted and post implanted annealed fusion steels

• Published in: Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Vol. 271; pp. 27 - 32
• Main Authors: Gonzalez-Arrabal, R., Munnik, F., González, M., Romero, P., Heller, R., Leardini, F., Perlado, J.M.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.01.2012
• Subjects: Annealing; Diffusion; Elemental composition; Fusion reactor steels; Hydrogen depletion; Inhomogeneities; Ion beam analysis; Nuclear fusion; Nuclear microprobe; Nuclear reactions; ODS-Eurofer; Secondary ion mass spectrometry; Steels; Structural steels; Elemental composition; Fusion reactor steels; Nuclear microprobe; Hydrogen depletion; ODS-Eurofer; Ion beam analysis
• ISSN: 0168-583X; 1872-9584
• DOI: 10.1016/j.nimb.2011.10.005

The elemental distribution for as-received (AR), H implanted (AI) and post-implanted annealed (A) Eurofer and ODS-Eurofer steels has been characterized by means of micro Particle Induced X-ray Emission (μ-PIXE), micro Elastic Recoil Detection (μ-ERD) and Secondary Ion Mass Spectrometry (SIMS). The temperature and time-induced H diffusion has been analyzed by Resonance Nuclear Reaction Analysis (RNRA), Thermal Desorption Spectroscopy (TDS), ERDA and SIMS techniques. μ-PIXE measurements point out the presence of inhomogeneities in the Y distribution for ODS-Eurofer samples. RNRA and SIMS experiments evidence that hydrogen easily outdiffuses in these steels even at room temperature. ERD data show that annealing at temperatures as low as 300 °C strongly accelerates the hydrogen diffusion process, driving out up to the 90% of the initial hydrogen.