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Article Dans Une Revue Surface and Coatings Technology Année : 2014

Growth of ruthenium dioxide nanostructures by micro-afterglow oxidation at atmospheric pressure

Francis Kosior
Thomas Gries
S. Laminsi
  • Fonction : Auteur
Thierry Belmonte

Résumé

Various ruthenium dioxide nanostructures were grown locally by the oxidation of ruthenium samples with an Ar-O-2 microwave micro-afterglow operated at atmospheric pressure. A special attention was paid to the distribution of the surface temperature of the sample which evolves between 530 K and 820 K. Whatever the treatment time, the temperature and the gas composition set within the studied ranges, a general nanostructure, made of lamellae separated by 20-50 nm, is found. When the temperature rises, localized nano-sea urchins, nanotubes with square sections, nano-needles, and more complex structures are found spread over the surface. Treated surfaces were characterized by different surface diagnostics (SEM, XRD, SIMS, etc.) Finally, a growth mechanism is proposed emphasizing the role of emerging defects and stress on the appearance of localized nanostructures.
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Dates et versions

hal-01285342 , version 1 (09-03-2016)

Identifiants

Citer

D. Kuete Saa, R. P. Cardoso, Francis Kosior, A. Al Taweel, Thomas Gries, et al.. Growth of ruthenium dioxide nanostructures by micro-afterglow oxidation at atmospheric pressure. Surface and Coatings Technology, 2014, 255, pp.3-7. ⟨10.1016/j.surfcoat.2013.10.040⟩. ⟨hal-01285342⟩
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