Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Sintering of Mg and its Alloys under Hydrogen Atmospheres

Version 1 : Received: 11 February 2021 / Approved: 12 February 2021 / Online: 12 February 2021 (09:26:58 CET)

How to cite: Schaper, J. Sintering of Mg and its Alloys under Hydrogen Atmospheres. Preprints 2021, 2021020295 (doi: 10.20944/preprints202102.0295.v1). Schaper, J. Sintering of Mg and its Alloys under Hydrogen Atmospheres. Preprints 2021, 2021020295 (doi: 10.20944/preprints202102.0295.v1).

Abstract

Ongoing investigations have highlighted that MIM of Mg shows high potential for mass production of small lightweight components as well as of degradable implants with complex geometry. However, prior research activities have shown that Mg reacts sensitively to atmosphere impurities like oxygen and specific thermal decomposition products of the used backbone polymers. Polyethylene based polymers reveal a negative influence on sintering of Mg while polypropylene based polymers behave uncritically. This work is highlighting that when hydrogen instead of argon atmosphere is used during sintering, the negative influence caused by carbon residuals at the particle boundaries can be prevented. Mg-0.9Ca elongation increased with a slight decrease in UTS revealing a strengthening effect of the carbon residuals at the particle boundaries. For pure Mg UTS could be increased from 7 MPa up to 80 MPa with elongation of 6% showing the positive effect of hydrogen on the sintering of Mg.

Subject Areas

Sintering; light alloys

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