Refining Principles and Technical Methodologies to Produce Ultra-Pure Magnesium for High-Tech Applications

During the last decade, magnesium-based medical implants have become the focal point of a large number of scientific studies due to their perceived favorable properties. Implants manufactured from magnesium alloys are not only biocompatible and biodegradable, but they are also the answer to problems...

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Main Authors: Seifeldin R. Mohamed, Semiramis Friedrich, Bernd Friedrich
Format: Article
Language:English
Published: MDPI AG 2019-01-01
Series:Metals
Subjects:
Online Access:http://www.mdpi.com/2075-4701/9/1/85
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author Seifeldin R. Mohamed
Semiramis Friedrich
Bernd Friedrich
author_facet Seifeldin R. Mohamed
Semiramis Friedrich
Bernd Friedrich
author_sort Seifeldin R. Mohamed
collection DOAJ
description During the last decade, magnesium-based medical implants have become the focal point of a large number of scientific studies due to their perceived favorable properties. Implants manufactured from magnesium alloys are not only biocompatible and biodegradable, but they are also the answer to problems associated with other materials like stress shielding (Ti alloys) and low mechanical stability (polymers). Magnesium has also been a metal of interest in another field. By offering superior technical and economic features in comparison to lithium, it has received significant attention in recent years as a potential battery anode alternative. Natural abundancy, low cost, environmental friendliness, large volumetric capacity, and enhanced operational safety are among the reasons that magnesium anodes are the next breakthrough in battery development. Unfortunately, commercial production of such implants and primary and secondary cells has been hindered due to magnesium’s low corrosion resistance. Corrosion investigations have shown that this inferior quality is a direct result of the presence of certain impurities in metallic magnesium such as iron, copper, cobalt, and nickel, even at the lowest levels of concentration. Magnesium’s sensitivity to corrosion is an obstacle for its usage not only in biomedical implants and batteries, but also in the automotive/aerospace industries. Therefore, investigations focusing on magnesium refinement with the goal of producing high and ultra-high purity magnesium suitable for such demanding applications are imperative. In this paper, vacuum distillation fundamentals and techniques are thoroughly reviewed as the main refining principles for magnesium.
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spelling doaj.art-85329dc5b9da49eaae7a27e2aa22a5a02022-12-22T00:11:02ZengMDPI AGMetals2075-47012019-01-01918510.3390/met9010085met9010085Refining Principles and Technical Methodologies to Produce Ultra-Pure Magnesium for High-Tech ApplicationsSeifeldin R. Mohamed0Semiramis Friedrich1Bernd Friedrich2IME Institute of Process Metallurgy and Metal Recycling, RWTH Aachen University, 52056 Aachen, GermanyIME Institute of Process Metallurgy and Metal Recycling, RWTH Aachen University, 52056 Aachen, GermanyIME Institute of Process Metallurgy and Metal Recycling, RWTH Aachen University, 52056 Aachen, GermanyDuring the last decade, magnesium-based medical implants have become the focal point of a large number of scientific studies due to their perceived favorable properties. Implants manufactured from magnesium alloys are not only biocompatible and biodegradable, but they are also the answer to problems associated with other materials like stress shielding (Ti alloys) and low mechanical stability (polymers). Magnesium has also been a metal of interest in another field. By offering superior technical and economic features in comparison to lithium, it has received significant attention in recent years as a potential battery anode alternative. Natural abundancy, low cost, environmental friendliness, large volumetric capacity, and enhanced operational safety are among the reasons that magnesium anodes are the next breakthrough in battery development. Unfortunately, commercial production of such implants and primary and secondary cells has been hindered due to magnesium’s low corrosion resistance. Corrosion investigations have shown that this inferior quality is a direct result of the presence of certain impurities in metallic magnesium such as iron, copper, cobalt, and nickel, even at the lowest levels of concentration. Magnesium’s sensitivity to corrosion is an obstacle for its usage not only in biomedical implants and batteries, but also in the automotive/aerospace industries. Therefore, investigations focusing on magnesium refinement with the goal of producing high and ultra-high purity magnesium suitable for such demanding applications are imperative. In this paper, vacuum distillation fundamentals and techniques are thoroughly reviewed as the main refining principles for magnesium.http://www.mdpi.com/2075-4701/9/1/85magnesiumrefiningrecyclingultra-high purityvacuum distillationcondensation
spellingShingle Seifeldin R. Mohamed
Semiramis Friedrich
Bernd Friedrich
Refining Principles and Technical Methodologies to Produce Ultra-Pure Magnesium for High-Tech Applications
Metals
magnesium
refining
recycling
ultra-high purity
vacuum distillation
condensation
title Refining Principles and Technical Methodologies to Produce Ultra-Pure Magnesium for High-Tech Applications
title_full Refining Principles and Technical Methodologies to Produce Ultra-Pure Magnesium for High-Tech Applications
title_fullStr Refining Principles and Technical Methodologies to Produce Ultra-Pure Magnesium for High-Tech Applications
title_full_unstemmed Refining Principles and Technical Methodologies to Produce Ultra-Pure Magnesium for High-Tech Applications
title_short Refining Principles and Technical Methodologies to Produce Ultra-Pure Magnesium for High-Tech Applications
title_sort refining principles and technical methodologies to produce ultra pure magnesium for high tech applications
topic magnesium
refining
recycling
ultra-high purity
vacuum distillation
condensation
url http://www.mdpi.com/2075-4701/9/1/85
work_keys_str_mv AT seifeldinrmohamed refiningprinciplesandtechnicalmethodologiestoproduceultrapuremagnesiumforhightechapplications
AT semiramisfriedrich refiningprinciplesandtechnicalmethodologiestoproduceultrapuremagnesiumforhightechapplications
AT berndfriedrich refiningprinciplesandtechnicalmethodologiestoproduceultrapuremagnesiumforhightechapplications