Manufacturing Technology 2014, 14(3):359-362 | DOI: 10.21062/ujep/x.2014/a/1213-2489/MT/14/3/359

Structural Description of Powder Metallurgy Prepared Materials

Alena Michalcová1, Dalibor Vojtěch1, Tomáš František Kubatík2, Pavel Novák1, Petr Dvořák1
1 Department of Metals and Corrosion Engineering, Institute of Chemical Technology in Prague, Technická 5, 166 28 Prag 6. Czech Republic
2 Institute of Plasma Physics AS CR, v. v. i., Za Slovankou 1782/3, 182 00 Prague 8. Czech Republic

The compaction of powder metals and alloys is very difficult field due to preserving of unique properties of initial materials. One of few possible method of succesful compaction is plasma sintering. To describe detailed structure os powder metallurgy materials, it is necesary to use advanced microscopy methods such as SEM and TEM. In this study, the structure of NiAl intermetallic compaoud is described. The material was at first produce by reactive sintering from pure elements. Subsequently, the NiAl porous master alloy was milled and compacted by spark plasma sintering (SPS) technique.The particle size of NiAl powder was compareable to the grain size of compact material, which exhibited low porosity. It was proven that the interconnection on NiAl particles is performed by thin layer of nanocrystalline oxides.

Keywords: SPS, intermetallics, powder metallurgy

Published: October 1, 2014  Show citation

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Michalcová A, Vojtěch D, Kubatík TF, Novák P, Dvořák P. Structural Description of Powder Metallurgy Prepared Materials. Manufacturing Technology. 2014;14(3):359-362. doi: 10.21062/ujep/x.2014/a/1213-2489/MT/14/3/359.
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