Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/3786
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Durães, Luísa | - |
dc.contributor.author | Costa, Benilde F. O. | - |
dc.contributor.author | Santos, Regina | - |
dc.contributor.author | Correia, António | - |
dc.contributor.author | Campos, José | - |
dc.contributor.author | Portugal, António | - |
dc.date.accessioned | 2008-08-29T15:26:23Z | - |
dc.date.available | 2008-08-29T15:26:23Z | - |
dc.date.issued | 2007 | en_US |
dc.identifier.citation | Materials Science and Engineering: A. 465:1-2 (2007) 199-210 | en_US |
dc.identifier.uri | https://hdl.handle.net/10316/3786 | - |
dc.description.abstract | Radial combustion experiments on Fe2O3/aluminum thermite thin circular samples were conducted. A stoichiometric (Fe2O3 + 2Al) and four over aluminized mixtures were tested. The combustion products were characterized by X-ray diffraction and Mössbauer spectroscopy and the influence of Fe2O3/aluminum ratio on their composition was assessed. The main products were identified as alumina ([alpha]-Al2O3) and iron (Fe). A significant amount of hercynite (FeAl2O4) was detected, decreasing with the aluminum excess in the reactants. Close to the sample/confinement interface, where reaction quenching occurs, a non-stoichiometric alumina (Al2.667O4) was observed, being its XRD intensity correlated to the hercynite amount. Fe3Al intermetallic phase was found in the products of over aluminized mixtures. A reaction mechanism was proposed comprising: (i) Fe2O3 reduction to Fe3O4 and FeO; (ii) Al oxidation to Al2O3; (iii) interaction of the remaining Al with Fe3O4 and FeO with formation of iron-aluminates (hercynite) and iron; (iv) for the over aluminized mixtures, incorporation of Al into the iron-aluminates takes place with the formation of iron and alumina and, in parallel, Al reacts with iron to produce intermetallics. | en_US |
dc.description.uri | http://www.sciencedirect.com/science/article/B6TXD-4NB2WNM-D/1/330874328b00bbec08b3f511d245aa05 | en_US |
dc.format.mimetype | aplication/PDF | en |
dc.language.iso | eng | eng |
dc.rights | openAccess | eng |
dc.subject | Thermite | en_US |
dc.subject | Iron oxide/aluminum reaction | en_US |
dc.subject | Products characterization | en_US |
dc.subject | X-ray diffraction | en_US |
dc.subject | Mössbauer spectroscopy | en_US |
dc.subject | Reaction mechanism | en_US |
dc.title | Fe2O3/aluminum thermite reaction intermediate and final products characterization | en_US |
dc.type | article | en_US |
dc.identifier.doi | 10.1016/j.msea.2007.03.063 | - |
item.fulltext | Com Texto completo | - |
item.languageiso639-1 | en | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | article | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
crisitem.author.researchunit | CIEPQPF – Chemical Process Engineering and Forest Products Research Centre | - |
crisitem.author.researchunit | LAETA - Associated Laboratory for Energy, Transports and Aeronautics | - |
crisitem.author.researchunit | CFE - Centre for Functional Ecology - Science for People & the Planet | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0003-3336-2449 | - |
crisitem.author.orcid | 0000-0002-6067-3069 | - |
crisitem.author.orcid | 0000-0003-1748-6345 | - |
Appears in Collections: | FCTUC Eng.Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
filec5d47aee56004f78bda04ac1045d3b65.pdf | 1.01 MB | Adobe PDF | View/Open |
SCOPUSTM
Citations
125
checked on Jul 15, 2024
WEB OF SCIENCETM
Citations
102
checked on May 2, 2023
Page view(s) 20
715
checked on Jul 23, 2024
Download(s) 20
1,461
checked on Jul 23, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.