Microstructure and Corrosion Behavior of Extruded Mg-Zn-Er Alloys

Devadas Bhat Panemangalore; Rajashekhara Shabadi; Manoj Gupta; Rajan Ambat; Gang Ji; Ahmed Addad; Ludovic Lesven

doi:10.4028/www.scientific.net/MSF.941.1766

Microstructure and Corrosion Behavior of Extruded Mg-Zn-Er Alloys

Devadas Bhat Panemangalore, Rajashekhara Shabadi^*, Manoj Gupta, Rajan Ambat, Gang Ji, Ahmed Addad, Ludovic Lesven

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The current medical technology necessitates the usage of biodegradable metals like Magnesium (Mg) as the future implant material due to the numerous benefits it can provide. Therefore, new Magnesium-based rare earth alloys targeting biomedical applications were synthesized using Disintegrated Melt Deposition (DMD) technique followed by hot-extrusion. In this investigation, Zinc (Zn) and Erbium (Er) were chosen as alloying elements to provide suitable strengthening effect and Mg-2Zn, Mg-2Zn-2Er alloys were synthesized. With the addition of alloying elements, the grain size was reduced and several MgZn intermetallics were formed. Corrosion studies of as-extruded materials were done in 0.5 wt.% NaCl solution to elucidate the microstructure-corrosion relationship. Improved corrosion resistance is seen in the alloys in comparison to pure Magnesium. Addition of Erbium is seen to improve the protectiveness of the surface film formed during immersion. Both these elements have proven to increase the corrosion potential of Mg in NaCl solution.

Original language	English
Journal	Materials Science Forum
Volume	941
Pages (from-to)	1766-1771
ISSN	0255-5476
DOIs	https://doi.org/10.4028/www.scientific.net/MSF.941.1766
Publication status	Published - 2018

Keywords

Corrosion
Magnesium
Rare-Earth

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title = "Microstructure and Corrosion Behavior of Extruded Mg-Zn-Er Alloys",

abstract = "The current medical technology necessitates the usage of biodegradable metals like Magnesium (Mg) as the future implant material due to the numerous benefits it can provide. Therefore, new Magnesium-based rare earth alloys targeting biomedical applications were synthesized using Disintegrated Melt Deposition (DMD) technique followed by hot-extrusion. In this investigation, Zinc (Zn) and Erbium (Er) were chosen as alloying elements to provide suitable strengthening effect and Mg-2Zn, Mg-2Zn-2Er alloys were synthesized. With the addition of alloying elements, the grain size was reduced and several MgZn intermetallics were formed. Corrosion studies of as-extruded materials were done in 0.5 wt.% NaCl solution to elucidate the microstructure-corrosion relationship. Improved corrosion resistance is seen in the alloys in comparison to pure Magnesium. Addition of Erbium is seen to improve the protectiveness of the surface film formed during immersion. Both these elements have proven to increase the corrosion potential of Mg in NaCl solution.",

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AU - Bhat Panemangalore, Devadas

AU - Shabadi, Rajashekhara

AU - Gupta, Manoj

AU - Ambat, Rajan

AU - Ji, Gang

AU - Addad, Ahmed

AU - Lesven, Ludovic

PY - 2018

Y1 - 2018

N2 - The current medical technology necessitates the usage of biodegradable metals like Magnesium (Mg) as the future implant material due to the numerous benefits it can provide. Therefore, new Magnesium-based rare earth alloys targeting biomedical applications were synthesized using Disintegrated Melt Deposition (DMD) technique followed by hot-extrusion. In this investigation, Zinc (Zn) and Erbium (Er) were chosen as alloying elements to provide suitable strengthening effect and Mg-2Zn, Mg-2Zn-2Er alloys were synthesized. With the addition of alloying elements, the grain size was reduced and several MgZn intermetallics were formed. Corrosion studies of as-extruded materials were done in 0.5 wt.% NaCl solution to elucidate the microstructure-corrosion relationship. Improved corrosion resistance is seen in the alloys in comparison to pure Magnesium. Addition of Erbium is seen to improve the protectiveness of the surface film formed during immersion. Both these elements have proven to increase the corrosion potential of Mg in NaCl solution.

AB - The current medical technology necessitates the usage of biodegradable metals like Magnesium (Mg) as the future implant material due to the numerous benefits it can provide. Therefore, new Magnesium-based rare earth alloys targeting biomedical applications were synthesized using Disintegrated Melt Deposition (DMD) technique followed by hot-extrusion. In this investigation, Zinc (Zn) and Erbium (Er) were chosen as alloying elements to provide suitable strengthening effect and Mg-2Zn, Mg-2Zn-2Er alloys were synthesized. With the addition of alloying elements, the grain size was reduced and several MgZn intermetallics were formed. Corrosion studies of as-extruded materials were done in 0.5 wt.% NaCl solution to elucidate the microstructure-corrosion relationship. Improved corrosion resistance is seen in the alloys in comparison to pure Magnesium. Addition of Erbium is seen to improve the protectiveness of the surface film formed during immersion. Both these elements have proven to increase the corrosion potential of Mg in NaCl solution.

KW - Corrosion

KW - Magnesium

KW - Rare-Earth

U2 - 10.4028/www.scientific.net/MSF.941.1766

DO - 10.4028/www.scientific.net/MSF.941.1766

M3 - Journal article

SN - 0255-5476

VL - 941

SP - 1766

EP - 1771

JO - Materials Science Forum

JF - Materials Science Forum

ER -

Microstructure and Corrosion Behavior of Extruded Mg-Zn-Er Alloys

Abstract

Keywords

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