The Fe-N system: phase transformations induced by the concomitant use of heavy ion bombardment and temperature

Authors
Moreira, EC Behar, M Amaral, L
Citation
Ec. Moreira et al., The Fe-N system: phase transformations induced by the concomitant use of heavy ion bombardment and temperature, NUCL INST B, 148(1-4), 1999, pp. 836-840
Citations number
10
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
ISSN journal
0168583X → ACNP
Volume
148
Issue
1-4
Year of publication
1999
Pages
836 - 840
Database
ISI
SICI code
0168-583X(199901)148:1-4<836:TFSPTI>2.0.ZU;2-Z
Abstract
Ion-beam-assisted phase transformation in the Fe-N system has been studied for Fe samples implanted with N at room temperature. By bombarding the as-i mplanted samples with 1.4 MeV Au ions in the 200 -400 degrees C temperature range, we have produced epsilon-Fe2N double right arrow epsilon-Fe3.2N and epsilon-Fe2N double right arrow gamma'-Fe4N phase transformations at tempe ratures that are at least 70 degrees C lower than those required for therma l treatments alone. Comparison with previous results shows that the energy transfer per ion to the matrix plays a key role in lowering the temperature for a given phase transformation. (C) 1999 Elsevier Science B.V. All right s reserved.