Investigation of the Composition and Properties of a Cr2AlC MAX Phase-Based Material Prepared by Metallothermic SHS
Abstract
Cast composite material based on Cr2AlC MAX phase has been prepared by metallothermic self-propagating high-temperature synthesis (SHS) from a mixture of powders of chromium oxide, aluminum, and carbon. The experiments have been performed using an SHS reactor with a volume V of 3 L under an excess inert gas (Ar) pressure ( P = 5 MPa). The prepared material has been studied by X-ray diffraction analysis, scanning electron microscopy, and local microstructural analysis. The quantitative analysis has been performed by the Rietveld method. The electrical resistivity was measured in the 100 -1300 K temperature range. The resulting material is an electrical conductor with metallic conductivity in the 100-1300 K temperature range, and has the electrical resistivity of the same order as the samples containing 100% Cr2AlC.
- Publication:
-
Physics of Metals and Metallography
- Pub Date:
- May 2019
- DOI:
- 10.1134/S0031918X19050041
- Bibcode:
- 2019PMM...120..471G