Retracted: Effects of waste eggshells and SiC addition on specific strength and thermal expansion of hybrid green metal matrix composite.
Chicken eggshell waste is an industrial byproduct, and its disposal constitutes a serious environmental hazard. Chicken eggshell can be used in commercial products to produce new materials with low cost and density. Low density material which can sustain at higher temperature is a remarkable area of research. Keeping these facts in the mind, the present investigation aims to study the physical behaviour, specific strength and thermal expansion of AA2014/SiC/carbonized eggshell hybrid green metal matrix composites. Microstructure of hybrid green metal matrix shows that the reinforcement particles (SiC particulates and carbonized eggshells particles) are uniformly distributed in the matrix AA2014 alloy. Specific strength for the composites containing 2.5wt.% SiC and up to 7.5wt.% carbonized eggshell was observed to be higher than that of the other selected composites. While for the same composition (AA2014/2.5% SiC/7.5% carbonized eggshell composites), porosity was observed lower than other selected composites. The results revealed that sample of AA2014/2.5% SiC/7.5% carbonized eggshell showed minimum cross sectional area reduction after the thermal expansion at 450°C among all the selected samples. Overall costs of hybrid metal matrix composites were also calculated.
School of Engineering, Gautam Buddha University, Greater Noida, Gautam Buddha Nagar, U.P. 201310, India.
Satpal
S
Sharma
School of Engineering, Gautam Buddha University, Greater Noida, Gautam Buddha Nagar, U.P. 201310, India; Noida Institute of Engineering and Technology, Greater Noida, Gautam Buddha Nagar, U.P. 201310, India. Electronic address: shashi_gla47@rediffmail.com.
Shashi Prakash
SP
Dwivedi
D000818:Animals; D017554:Carbon Compounds, Inorganic / Q000737:chemistry*; D002645:Chickens; D003247:Conservation of Natural Resources / Q000191:economics; D003365:Costs and Cost Analysis; D004528:Egg Shell; D006358:Hot Temperature; D008422:Materials Testing; D008670:Metals / Q000737:chemistry*; D016062:Porosity; D017655:Silicon Compounds / Q000737:chemistry*; D013718:Tensile Strength; D018505:Waste Management
D017554:Carbon Compounds, Inorganic; D008670:Metals; D017655:Silicon Compounds; C022088:silicon carbide
Cost; Green MMC; Specific strength; Thermal expansion; Waste eggshells