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Innovative approach to protect magnesium powder during sintering

  • Shany Rotem and Eli Aghion
Published/Copyright: June 5, 2016
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 107 Issue 6

Abstract

Mg foams produced by powder metallurgy are considered as a new class of materials with unique properties. However, the high reactivity of Mg powder during sintering has a detrimental effect on their properties. The study aims at evaluating the possibility of using an insignificant amount of sulfur hexafluoride in the form of N2+0.2 %SF6 atmosphere for protecting EW62 Mg alloy during sintering at high temperature. The results obtained clearly demonstrate the relative advantage of N2+0.2 %SF6 as a protective atmosphere and cost effective environment compared to pure Ar. This was related to the active role of fluorine during sintering which improves the oxidation resistance of the Mg powder and consequently the properties of Mg foams in terms of structural integrity and strength.

Keywords: Magnesium powder; Magnesium foams; Sintering
*Correspondence address, Prof. Eli Aghion, Department of Materials Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel, Tel.: +972-8-647-7498, Cellular phone: +972-52-3577-367, Fax: +972-8-647-7935, E-mail:

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Received: 2016-01-04
Accepted: 2016-02-16
Published Online: 2016-06-05
Published in Print: 2016-06-10

© 2016, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111373
Keywords for this article
Magnesium powder; Magnesium foams; Sintering

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Effect of Peierls stress and strain-hardening parameters on EMR emission in metals and alloys during progressive plastic deformation
  5. Relaxation and diffusion barriers at step edges of Cu, Ag and Au homo- and heterogeneous systems: Case of (100) facet
  6. Simulation analysis on impurity distribution in mc-Si grown by directional solidification for solar cell applications
  7. Experimental investigation and thermodynamic calculation of the Mg–Sr–Zr system
  8. Microstructures and properties of Cr–Cu/W–Cu bi-layer composite coatings prepared by mechanical alloying
  9. Innovative approach to protect magnesium powder during sintering
  10. Friction stir welding of foamable AlSi7 reinforced by B4C
  11. Incorporation of SiC particles in FS welded zone of AZ31 Mg alloy to improve the mechanical properties and corrosion resistance
  12. Effects of fiber volume fraction on strain of piezoelectric fiber composites
  13. Dry wear behavior of cooling-slope-cast hypoeutectic aluminum alloy
  14. Short Communications
  15. In-situ grown interwoven NiSe on Ni foam as a catalyst for hydrazine oxidation
  16. DGM News
  17. DGM News
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