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Microstructures of alumina-aluminium/magnesium interpenetrating composites
journal contribution
posted on 2007-01-22, 11:17 authored by Rebecca HigginsonRebecca Higginson, Hong Chang, J.G.P. BinnerInterpenetrating composites allow a completely 3-dimensional matrix of two phases,
in this case an alumina (ceramic) and aluminium-magnesium alloy (metal), to be
developed. This 3-dimensionality yields a material with mechanical and physical
properties that are superior to either the metal or ceramic individually. The composites
were produced by heating an alumina foam and aluminium-magnesium alloys
together in flowing nitrogen to in excess of 900°C. At these temperatures the alloy is
drawn into the ceramic foam by capillary action. The infiltration process is dependent
on the interaction of the alloy with the nitrogen atmosphere in the furnaces. This
complex interaction and its affect on the microstructural development has been
studied using Electron Backscatter Diffraction (EBSD) coupled with Energy
Dispersive x-ray Spectroscopy (EDS).
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Materials
Pages
1090533 bytesCitation
HIGGINSON, R.L., CHANG, H. and BINNER, J.G.P., 2006. Microstructures of alumina-aluminium/magnesium interpenetrating composites. Materials Science Forum, 519-521, pp. 1279-1284Publisher
© Trans TechPublication date
2006Notes
This is Restricted Access. This article was published in the journal, Materials Science Forum [© Trans Tech] and is available via: http://www.scientific.net/.ISSN
0255-5476Language
- en