Development of Mg based biomaterial with improved mechanical and degradation properties using powder metallurgy

In the present work, biocompatible materials such as niobium (Nb), zinc (Zn) and calcium (Ca) have been blended with magnesium (Mg) to develop a novel biomaterial (BM) with improved mechanical and corrosion resistant properties. Powder metallurgy (PM) technique was used to fabricate Mg based BM. The...

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Main Authors: Ajit Kumar, Pulak M. Pandey
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2020-09-01
Series:Journal of Magnesium and Alloys
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2213956720300463
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spelling doaj-1bdd678824314fd79c7e94da4703a6952021-04-02T16:56:17ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672020-09-0183883898Development of Mg based biomaterial with improved mechanical and degradation properties using powder metallurgyAjit Kumar0Pulak M. Pandey1Department of Mechanical Engineering, Indian Institute of Technology, Delhi, 110016, IndiaCorresponding author.; Department of Mechanical Engineering, Indian Institute of Technology, Delhi, 110016, IndiaIn the present work, biocompatible materials such as niobium (Nb), zinc (Zn) and calcium (Ca) have been blended with magnesium (Mg) to develop a novel biomaterial (BM) with improved mechanical and corrosion resistant properties. Powder metallurgy (PM) technique was used to fabricate Mg based BM. The powder of all aforementioned materials were mixed homogenously in specific quantities to create a uniform composite component. In order to analyse the influence of process parameters on the mechanical properties of the fabricated part, experiments were performed considering central composite design (CCD). The effect of powder metallurgical parameters namely percentage Nb, compaction pressure, heating rate, sintering temperature and soaking time on the ultimate compressive strength (UCS) and sintered density was studied in the present study. It was found that the UCS and sintered density increased with increase in compaction pressure, heating rate and sintering temperature. The results also revealed that the increase in soaking time and percentage Nb, increased sintered density and UCS to a certain limit. Subsequent increase in these two parameters, sintered density and UCS decreased. Scanning electron microscopy (SEM) images of the fabricated samples showed reduction in porosity with the increase in heating rate. Moreover, X-ray diffraction (XRD) results revealed that no other phase or impurities were found during sintering of Mg based BMs. The optimum process parameters were obtained to develop Mg based BM for maximum UCS and sintered density. Furthermore, the Mg based BM samples fabricated at optimum process parameters were used for corrosion testing in simulated body fluid (SBF) solution at a temperature of 37±0.5°C. The Mg based BM yielded improved mechanical properties with reduced corrosion rates as compared to pure Mg.http://www.sciencedirect.com/science/article/pii/S2213956720300463BiomaterialsPowder metallurgyMagnesiumCorrosionMetal matrix composite
collection DOAJ
language English
format Article
sources DOAJ
author Ajit Kumar
Pulak M. Pandey
spellingShingle Ajit Kumar
Pulak M. Pandey
Development of Mg based biomaterial with improved mechanical and degradation properties using powder metallurgy
Journal of Magnesium and Alloys
Biomaterials
Powder metallurgy
Magnesium
Corrosion
Metal matrix composite
author_facet Ajit Kumar
Pulak M. Pandey
author_sort Ajit Kumar
title Development of Mg based biomaterial with improved mechanical and degradation properties using powder metallurgy
title_short Development of Mg based biomaterial with improved mechanical and degradation properties using powder metallurgy
title_full Development of Mg based biomaterial with improved mechanical and degradation properties using powder metallurgy
title_fullStr Development of Mg based biomaterial with improved mechanical and degradation properties using powder metallurgy
title_full_unstemmed Development of Mg based biomaterial with improved mechanical and degradation properties using powder metallurgy
title_sort development of mg based biomaterial with improved mechanical and degradation properties using powder metallurgy
publisher KeAi Communications Co., Ltd.
series Journal of Magnesium and Alloys
issn 2213-9567
publishDate 2020-09-01
description In the present work, biocompatible materials such as niobium (Nb), zinc (Zn) and calcium (Ca) have been blended with magnesium (Mg) to develop a novel biomaterial (BM) with improved mechanical and corrosion resistant properties. Powder metallurgy (PM) technique was used to fabricate Mg based BM. The powder of all aforementioned materials were mixed homogenously in specific quantities to create a uniform composite component. In order to analyse the influence of process parameters on the mechanical properties of the fabricated part, experiments were performed considering central composite design (CCD). The effect of powder metallurgical parameters namely percentage Nb, compaction pressure, heating rate, sintering temperature and soaking time on the ultimate compressive strength (UCS) and sintered density was studied in the present study. It was found that the UCS and sintered density increased with increase in compaction pressure, heating rate and sintering temperature. The results also revealed that the increase in soaking time and percentage Nb, increased sintered density and UCS to a certain limit. Subsequent increase in these two parameters, sintered density and UCS decreased. Scanning electron microscopy (SEM) images of the fabricated samples showed reduction in porosity with the increase in heating rate. Moreover, X-ray diffraction (XRD) results revealed that no other phase or impurities were found during sintering of Mg based BMs. The optimum process parameters were obtained to develop Mg based BM for maximum UCS and sintered density. Furthermore, the Mg based BM samples fabricated at optimum process parameters were used for corrosion testing in simulated body fluid (SBF) solution at a temperature of 37±0.5°C. The Mg based BM yielded improved mechanical properties with reduced corrosion rates as compared to pure Mg.
topic Biomaterials
Powder metallurgy
Magnesium
Corrosion
Metal matrix composite
url http://www.sciencedirect.com/science/article/pii/S2213956720300463
work_keys_str_mv AT ajitkumar developmentofmgbasedbiomaterialwithimprovedmechanicalanddegradationpropertiesusingpowdermetallurgy
AT pulakmpandey developmentofmgbasedbiomaterialwithimprovedmechanicalanddegradationpropertiesusingpowdermetallurgy
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