Effect of CCBP doping on the multifunctional Al-0.5 Mg-15CCBP superalloy using liquid metallurgy process for advanced application O.S.I. Fayomi a, c, * , O.O. Joseph a , I.G. Akande b , C.K. Ohiri a , K.O. Enechi a , N.E. Udoye a a Department of Mechanical Engineering, Covenant University, P.M.B, 1023, Ota, Nigeria b Department of Mechanical Engineering, University of Ibadan, Ibadan, Oyo state, Nigeria c Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, P.M.B, X680, Pretoria, South Africa article info Article history: Received 5 December 2018 Received in revised form 24 December 2018 Accepted 26 December 2018 Available online 27 December 2018 Keywords: Aluminium Composite Electrical properties Mechanical properties Corrosion abstract One of the greatest challenges of metallic alloys in numerous applications is due to their structural and habitual failure in service. In an attempt to subdue this failure, Aluminium metal matrix composite was developed with the inclusion of carbonized chicken bone powder (CCBP) as the reinforcing particulate. The addition of the nano-sized CCBP was carried out at different percentage weight on an Al6063 alloy. The production of Aluminium metal matrix composite (A6063-CCBP) was achieved using stir casting comprising 0, 5, 10, and 15wt per cent of CCBP. The electrochemical and weight loss test conducted in 0.5 M of hydrochloric acid on the composite reveal an improved corrosion resistance. Conventional mechanical tests; hardness and tensile test carried out on the composite using Vickers hardness tech- nique and Universal tensile machine respectively showed that the composite now exhibits better me- chanical properties. The comparison of the electrical properties from the electrical test carried out pointed to the fact that incorporation of CCBP into Al6063 provided some level of insulation. Also, the morphological change via SEM (Scanning Electron Microscope) micrograph unveiled that the inclusion of CCBP in the A6063 metal matrix reduced cleavages, showing uniform dispersion of the reinforcement along the grain boundaries and more so, minimised brittle fracture. © 2019 Elsevier B.V. All rights reserved. 1. Introduction The growths of automotive, aerospace and maritime industries have commanded the search for composite materials with good mechanical and chemical properties such as toughness, high hardness and improved corrosion resistance [1e3]. Researches on metal matrix composites in recent years have shown that they exhibit beneficial industrial applications due to their superior strength-to-weight ratio and high resistance to temperature. The development of low-cost materials, especially metal matrix com- posite with enhanced properties has been the focus of many re- searchers [4e7]. Regularly, in electrochemically destructive medium like acid and salt, alloys of Aluminium have been used as matrix materials, incorporated with economical reinforcement particles to generate long-lasting aluminium particulate composites [8,9]. Various types of Metal Matrix Composites are fabricated with excellent qualities and continuous configurations and dimensions [10]. Aluminium metal matrix composites (AMMCs) are of immense importance because of their high-temperature capacity as well as thermal stress resistance [11]. Extensive research in the field of AMMCs established beyond suspicion the edges Al-based metal matrix composites (AMMCs) has over the base alloy in the laboratory scale. Today, there is a constant demand for AMMCs for various Engineering components [12]. Carbonized chicken bone powder (CCBP) is known to contain calcium. The calcium content of the bone prevents ignition during casting [13, 14]. This is as a result of the retardation in the oxidation rate throughout the melting process by developing tiny and compact calcium oxide layer on the exterior of the melted alloy [15]. The calcium additive further re- fines the microstructure of the casting as a result of its grain refinement ability [16]. The phosphorus and large carbon content of the ash improves the coalescence of the early stage of the molten metal and hardness of the final composite respectively [17]. The parent aluminium enhance the castability of the entire composite by decreasing the melting point, with the benefit that the overall * Corresponding author. Department of Mechanical Engineering, Covenant Uni- versity, P.M.B, 1023, Ota, Nigeria. E-mail addresses: ojo.fayomi@covenantuniversity.edu.ng, Ojosundayfayomi3@ gmail.com, fayomio@tut.ac.za (O.S.I. Fayomi). Contents lists available at ScienceDirect Journal of Alloys and Compounds journal homepage: http://www.elsevier.com/locate/jalcom https://doi.org/10.1016/j.jallcom.2018.12.312 0925-8388/© 2019 Elsevier B.V. All rights reserved. Journal of Alloys and Compounds 783 (2019) 246e255