The effect of eggshell as a reinforcement on the mechanical and Corrosion properties of Mg-Zn-Mn matrix composite

Hasan A Fattah,Ayman Elsayed,Salah Salman,Mohammed Gouda

doi:10.36547/ams.27.4.1088

Hasan A Fattah, Ayman Elsayed + Show 2 more

Open Access

https://doi.org/10.36547/ams.27.4.1088

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Abstract

Magnesium is a promising lightweight metal required in many industries such as automobile, aerospace, electronics, etc. It is also a biodegradable material, which eliminates the secondary removal procedure of the implant. Furthermore, its mechanical properties are similar to the mechanical properties of human bone. In this research, eggshells were used as an environmentally friendly composite reinforcement material in the Mg-2.5Zn-1Mn matrix. Composites were prepared using the powder metallurgy route. The effect of eggshells on the morphology, mechanical, and corrosion behaviour of Mg-2.5Zn-1Mn alloy was investigated. The results revealed an enhancement in grain refining ability and mechanical properties of Mg-2.5Zn-1Mn with eggshell additives. The corrosion behaviour improved at a higher percentage of eggshells (10%).

Highlights

Magnesium (Mg) is the third-largest structural metal in the earth's crust; it comes after aluminum and iron
The results revealed an enhancement in grain refining ability and mechanical properties of Mg-2.5Zn-1Mn with eggshell additives
It is considered the optimum choice for producing such metal matrix composites (MMCs) mainly because of the high production rates combined with the good compositional homogeneity

Summary

Introduction

Magnesium (Mg) is the third-largest structural metal in the earth's crust; it comes after aluminum and iron. Typical magnesium alloys weigh less than their aluminum coequal counterparts with the same stiffness [1,2,3]. These properties cause magnesium alloys to be a good candidate for lightweight applications like aerospace and transportation [4]. Mg is usually alloyed with alloying elements like aluminum (Al), zinc (Zn), silicon (Si), zirconium (Zr), manganese (Mn), and rare earth elements (e.g., Ce, Nd, Gd, etc.) [11]. Most of these alloying elements have low biocompatibility, Al and rare earth elements. The Zn content should be limited to 4 wt.% to achieve the desired mechanical properties [18]

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