A novel approach in fabrication of a hybrid green metal matrix composite using waste egg shells and snail shell ash as reinforcements
Soutrik Bose*, Deep Mondal, and Subhayu Sar
Department of Mechanical Engineering, MCKV Institute of Engineering, 243 G.T. Road (N), Liluah, Howrah 711204, West Bengal, India.
Carbon - Science and Technology 10/4 (2018) 1 - 7.
© Applied Science Innovations Private Limited, India.
Full Text (OPEN ACCESS): CST-333.pdf
Keywords: Wettability, porosity, interfacial bonding, tensile strength, hardness
Abstract: The effective utilization of biowaste is mandatory for sustainability of our society. The
aluminum (Al) alloy is reinforced with different volume fractions of silicon carbide (SiC), waste
carbonized eggshells (WCE) and snail shell ash (SSA) and fabricated by stir casting process. To
manifest the global need of novel hybrid composites with reduced weight, high strength and cost
effectiveness, this paper leads to the development of a new hybrid composite. Experimental results
shows increased hardness, tensile and fatigue strength while decrease in fracture toughness, ductility
and corrosion rate which is improved by heat treatment. The optimum values are obtained at 12.5 wt. %
of WCE and 7.5 wt. % SiC+SSA. The samples are kept stable and non-reactive at most favorable
temperature. Mono-ethylene glycol (MEG) in aqueous solution is used for the experiments. The
hardness is augmented to a maximum value at 7.5 wt. % SiC+SSA addition and gets decremented at 10
wt. % SiC+SSA addition. Microstructures of composites show uniformity in interfacial bonding and
distribution of WCE. Density and overall cost of the composite are decreased which infer improvement
of mechanical properties with the addition of WCE particulates.
