PHYSICO-MECHANICAL PROPERTIES OF IRON-MILLSCALE REINFORCED CERAMIC COMPOSITE

  • O. I. Sekunowo
  • Durowaye, S. I., Lawal, G. I.
Keywords: Ceramic matrix composite, iron millscale, specific strength, impact energy

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.

Author Biographies

O. I. Sekunowo

Faculty of Engineering Metallurgical and Materials Engineering Department,

University of Lagos. Nigeria

Durowaye, S. I., Lawal, G. I.

Faculty of Engineering Metallurgical and Materials Engineering Department,

University of Lagos. Nigeria

Published
2019-05-17
How to Cite
Sekunowo, O. I., & Lawal, G. I., D. S. I. (2019). PHYSICO-MECHANICAL PROPERTIES OF IRON-MILLSCALE REINFORCED CERAMIC COMPOSITE. UNILAG Journal of Medicine, Science and Technology, 6(1), 97-112. Retrieved from http://ujmst.unilag.edu.ng/article/view/399