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An in-situ ToF-LEIS...
An in-situ ToF-LEIS and AES study of near-surface modifications of the composition of EUROFER97 induced by thermal annealing
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- Shams-Latifi, Jila (författare)
- Uppsala universitet,Tillämpad kärnfysik
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- Ström, Petter (författare)
- Uppsala universitet,Tillämpad kärnfysik
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- Pitthan, Eduardo (författare)
- Uppsala universitet,Tillämpad kärnfysik
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- Primetzhofer, Daniel (författare)
- Uppsala universitet,Tillämpad kärnfysik,Tandemlaboratoriet,Uppsala Univ, Dept Phys & Astron, Div Appl Nucl Phys, Box 516, SE-75120 Uppsala, Sweden.;Uppsala Univ, Tandem Lab, Box 529, SE-75121 Uppsala, Sweden.
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(creator_code:org_t)
- Elsevier, 2022
- 2022
- Engelska.
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Ingår i: Nuclear Materials and Energy. - : Elsevier. - 2352-1791. ; 30
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Surface segregation and diffusion of W, Ta, Cr, O and S after thermal annealing of EUROFER97 were studied in-situ. The sample was prepared by polishing, annealing up to 300??& nbsp;and 3 keV Ar sputtering. In-situ measurements with time-of-flight low energy ion scattering using 8 keV Ne ions and Auger electron spectroscopy were carried out close to room temperature after each annealing, in sequence, to 425?, 675?, 400?, 675?, 900?, and 925?. Surface segregation/diffusion of chromium and tungsten and/or tantalum can be observed in the ion scattering spectra. The segregation of sulfur was clearly observed in Auger electron spectroscopy. The energy converted time-of-flight low-energy ion scattering spectrum after the first annealing to 675?& nbsp;was compared to Monte-Carlo simulations using the TRBS code. The most compatible simulation indicates a layer enriched in W + Ta of 1 +/- 0.3 nm featuring 0.0276 combined relative concentration of tungsten and tantalum to total metal content which is considerably higher than the bulk value of 0.0042.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Nyckelord
- EUROFER97
- ToF-LEIS
- AES
- In-situ
- Annealing
- Segregation
- Diffusion
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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