Volume 5, Issue 2 , 2017

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https://ir.unilag.edu.ng/handle/123456789/3815

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Browsing Volume 5, Issue 2 , 2017 by Author "Agunsoye, J.O"

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  • Item
    Open Access
    The Effect of Process Parameters on Mechanical and Wear Properties of Alluminium-fired Clay Composites
    (University of Lagos Press, Akoka, 2017) Agbeleye, A.A; Hassan, S.B; Esezobor, D.E; Balogun, S.A; Agunsoye, J.O
    In this paper, the mechanical and tribological behaviours of as cast and rolled samples of Aluminium AA1070/fired clay (Al-Clay) composites were studied. The composites were developed through stir casting route with 0-20 wt.% clay particles of grain sizes250, 177 and 150 μm. The samples were cold rolled to final reduction of 20 and 35%.Hardness, tensile, impact and wear tests were performed on the developed composite samples and their microstructure were examined to determine the phases present in the composite. The results showed improvement in the mechanical and wear properties of Al-Clay composites with increase in wt.% clay addition. Increase in percent reduction also showed a reasonable increase in the mechanical and wear properties of the rolled samples. The results obtained clearly shows that Al-clay composite can be produced by stir casting and possess superior properties to the Aluminium AA1070 in terms of wear properties, impact energy, tensile strength as well as hardness.
  • Item
    Open Access
    Wear Behaviour of Low Alloy Grey Cast Iron (NF-Grey 7): The Effect of Ferrosilicon and Carbonised Coconut Shell Nanoparticle Addition
    (University of Lagos Press, Akoka, 2017) Agunsoye, J.O; Bello, S.A; Odunmosu, A.K
    Effect of ferrosilicon and carbonised coconut shell nanoparticle additions on wear resistance of (NF-Grey 7) cast iron were studied. Alloys of (NF-Grey 7) cast iron were produced by a gradual increase in masses of the ferrosilicon and carbonised coconut shell nanoparticle additions using a green sand mould and stir cast technique. The behaviour of the material under shock energy impact and dry sliding wear conditions were studied. Results revealed that addition of the ferrosilicon and carbonised coconut shell nanoparticle additions to the (NG-Grey 7) cast iron enhanced the wear resistance and impact energy absorption more than what obtained in the earlier NG-Grey 7 cast iron reinforced with ferrosilicon and graphite micro particles. Hence, new alloy of cast iron for jaw crusher and other heavy equipment applications where wear resistance and energy absorption are a prime prerequisite has been developed.