PHYSICO-MECHANICAL PROPERTIES OF IRON-MILLSCALE REINFORCED CERAMIC COMPOSITE
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Date
2018
Authors
Sekunowo, O.I.
Durowaye, S.I.
Lawal, G.I.
Journal Title
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Volume Title
Publisher
Unilag Journal of Medicine, Science and Technology (UJMST) Vol 6. No. 1, 2018
Abstract
The overall safety of an aircraft requires that structural parts meet operational
aerodynamic critical mechanical characteristics. This paper evaluated two
critical mechanical properties of iron millscale (IMS) particles reinforced
ceramic matrix composite (CMC) as a suitable material for aircraft structural
application. The IMS particles reinforced CMC was produced by powder
metallurgy method. IMS particles addition varied from 5 – 30 wt. % in a matrix
comprising a mixture of silica, and magnesia and sodium bentonite as
lubricant. The composites were subjected to physical and mechanical properties
tests while their microstructures were characterised using scanning electron
microscopy coupled with energy dispersive spectroscopy (SEM/EDS) and the
data obtained analysed. The results show promising performances by the
composites in terms of a relatively low density (2.75 g/cm3) as a precursor of
lightweight, enhanced specific strength of 58.3 kN.m/kg and desirable impact
toughness up to 77.8 J. Resistance to lateral reduction in dimension as indicated
by the compressive strength is 168.2 MPa. It is concluded that the intrinsic
elastic transformation behaviour of the reinforcing phase during sintering is
responsible for the mechanical properties enhancement.
Description
Keywords
Ceramic matrix composite, iron millscale, specific strength, impact energy
Citation
Sekunowo⃰, O. I.; Durowaye, S.I.; Lawal, G.I. (2018). PHYSICO-MECHANICAL PROPERTIES OF IRON-MILLSCALE REINFORCED CERAMIC COMPOSITE. Unilag Journal of Medicine, Science and Technology (UJMST); 6(1): 97-112