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Synthesis of tungsten nanopowders: Comparison of milling, SHS, MASHS and milling-induced chemical processes

  • Sarah Dine
  • , Sara Aïd
  • , Karim Ouaras
  • , Véronique Malard
  • , Michaël Odorico
  • , Nathalie Herlin-Boime
  • , Aurélie Habert
  • , Adèle Gerbil-Margueron
  • , Christian Grisolia
  • , Jacques Chêne
  • , Gregory Pieters
  • , Bernard Rousseau
  • , Dominique Vrel
  • Université Paris 13
  • CEA/UVSQ/CNRS
  • CEA Cadarache
  • Building 547

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

Synthesis of tungsten nanopowders was studied using milling of micrometric tungsten, then using the WO3-Mg thermitic reaction, using SHS (Self-propagating High-temperature Synthesis), milling induced chemical reaction (MICR), and MASHS (Mechanically Activated SHS). Reactions are studied by measuring temperature and pressure inside the milling jar (during MICR), or by analyzing the temperature profile along the sample during the reaction propagation by infrared thermography (SHS, MASHS). After reaction, samples were analyzed by AFM or SEM, by XRD, and BET. MASHS seems to possess optimum conditions with a pre-milling before SHS of 10 min, which yielded the highest tungsten purity, together with a grain size corresponding to our aim.

langue originaleAnglais
Pages (de - à)1300-1305
Nombre de pages6
journalAdvanced Powder Technology
Volume26
Numéro de publication5
Les DOIs
étatPublié - 1 sept. 2015
Modification externeOui

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