Paper Title:
Kinetics and Formation Mechanisms of a Nanostructured Fe-Y2O3 Powder Prepared by Reactive Ball Milling
  Abstract

Reactive high energy ball-milling has known a growing interest from both fundamental and applied point of view. We focus here on the specific system Fe-Y2O3 metal-oxide nanocomposite because of its potential application to the synthesis of oxide dispersion strengthened steels, which are promising materials for nuclear applications. YFe3 and Fe2O3 were ball-milled during different milling durations in the stoichiometric proportions defined by the chemical reaction 2 YFe3 + Fe2O3 → 8 Fe + Y2O3. The obtained milled powder was characterized by XRD, SEM, TEM and their thermal behaviour was investigated by DTA. Through those characterizations, a Mechanically induced Self-propagating Reaction (MSR) was observed and several steps in the ball-milling process were identified: mixing of reactants, chemical reaction propagation, amorphization and refinement of the microstructure. The role of the milling intensity was also examined.

  Info
Periodical
Solid State Phenomena (Volumes 172-174)
Edited by
Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson
Pages
691-696
DOI
10.4028/www.scientific.net/SSP.172-174.691
Citation
M. Couvrat, F. Legendre, M. Brocq, L. Chaffron, L. Boulanger, P. Bonnaillie, "Kinetics and Formation Mechanisms of a Nanostructured Fe-Y2O3 Powder Prepared by Reactive Ball Milling", Solid State Phenomena, Vols. 172-174, pp. 691-696, 2011
Online since
June 2011
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Price
$32.00
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