Microstructure and thermal stability of Al₂O₃-20vol%Fe₄₈Co₅₂ composite powder particles prepared by high energy mechanical milling

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dc.contributor.authorYusop, Masleeyati
dc.contributor.authorZhang, Deliang
dc.contributor.authorWilson, Marcus T.
dc.coverage.spatialConference held at Auckland, New Zealanden_NZ
dc.date.accessioned2011-02-23T02:14:48Z
dc.date.available2011-02-23T02:14:48Z
dc.date.issued2009
dc.description.abstractHigh energy mechanical milling of a mixture of alumina and nanostructured Fe₄₈Co₅₂ powders was used in producing an Al₂O₃-20vol%Fe₄₈Co₅₂ composite powder. The milling time ranged from 8 to 48 hours. The microstructural changes were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD analysis of the powder showed significant reduction in Al₂O₃ grain size after 24h milling to 27nm and approaching the alloy grain size with further milling. However, the alloy particles demonstrated almost unchanged grain size throughout the process. As milling progressed, changes of alloy particles shapes and their location in alumina phases became apparent. After 24h, a small fraction of Al₂O₃ particles became embedded into the alloy particles, forming a complex composite structure. Small change in the microhardness of the particles was observed. It was also observed that the Fe₄₈Co₅₂ particles and Al₂O₃ matrix reacted heavily when the powder was heated to 10500°C.en_NZ
dc.identifier.citationYusop, M., Zhang, D. & Wilson, M. (2009). Microstructure and thermal stability of Al₂O₃-20vol%Fe₄₈Co₅₂ composite powder particles prepared by high energy mechanical milling. IOP Conference Series: Materials Science and Engineering, 4(1), 012016.en_NZ
dc.identifier.doi10.1088/1757-899X/4/1/012016en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/5086
dc.language.isoen
dc.publisherIOP Publishingen_NZ
dc.relation.isPartOfProceedings of Processing, Microstructure and Performance Materialsen_NZ
dc.relation.urihttp://iopscience.iop.org/1757-899X/4/1/012016en_NZ
dc.subjectHigh energy mechanical millingen_NZ
dc.titleMicrostructure and thermal stability of Al₂O₃-20vol%Fe₄₈Co₅₂ composite powder particles prepared by high energy mechanical millingen_NZ
dc.typeJournal Articleen_NZ
pubs.begin-page1en_NZ
pubs.elements-id19517
pubs.end-page5en_NZ
pubs.finish-date2009-04-09en_NZ
pubs.place-of-publication(online)en_NZ
pubs.start-date2009-04-08en_NZ
pubs.volumeIOP Conference Series, Materials Science and Engineering, Volume 4en_NZ
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