5-8 September 2022
Wyndham Grand Salzburg Conference Center
Europe/Vienna timezone

Synthesis and characterisation of MAX phase Ti3AlC2by pressureless sintering

7 Sep 2022, 17:57
2m
Wyndham Grand Salzburg Conference Center

Wyndham Grand Salzburg Conference Center

Fanny-von-Lehnert-Straße 7, 5020 Salzburg, Austria
Poster Thermal and thermochemical treatment in additive manufacturing Poster

Speaker

Vyom DESAI (Institute for Plasma Research)

Description

MAX phases materials have the potential to bridge the gap between metallic and ceramic materials owing to their excellent properties like good machinability, thermal conductivity, high temperature oxidation and corrosion resistant, low density, low thermal expansion coefficient etc. [1,2]. The present study emphasises the synthesis of layered ternary carbide Ti3AlC2 by mixing the TiH2, Al and TiC powders in a planetary ball mill followed by pressureless sintering in flowing Argon (Ar) atmosphere. The sintering process is carried out in two steps; i) decomposition of TiH2 to Ti which leads to solid – liquid reaction of Ti and molten Al. ii) Ti-Al compounds formed by step 1 react with TiC to synthesis MAX phase Ti3AlC2 [3]. The mixed precursor powders were cold pressed and annealed at 750°C for 2 hours at a ramp rate of 10°C/minute in step 1. Step 2 includes the heat treatment of annealed samples at a ramp rate of 10°C/minute to 1250°C for 5 hours in a tube furnace under flowing Ar. The processed Ti3AlC2 samples were analysed by X-ray diffraction (XRD), Raman Spectroscopy for phase identification followed by Scanning electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDS) to investigate the morphology and quantify different phase constituents present. Differential Scanning Calorimetry (DSC) was performed to study the thermal analysis of Ti3AlC2 phase upto 1400oC in Ar atmosphere. The results indicated that the synthesised Ti3AlC2 have high purity along with TiC as a minimal impurity. DSC results revealed that Ti3AlC2 phase does not undergo decomposition upto 1400oC in Ar atmosphere. Thus, this study provides a beneficial approach to low temperature synthesis of high-purity Ti3AlC2 materials and understanding the thermal behaviour of Ti3AlC2 for high temperature applications.

Register for the Tom Bell Young Author Award (TBYAA)? Yes
Speaker Country India

Primary author

Vyom DESAI (Institute for Plasma Research)

Co-authors

Dr Arunsinh ZALA (Institute for Plasma Resarch) Mr Aroh SRIVASTAVA (Institution for Plasma Research) Dr Surojit GUPTA (University of North Dakota) Dr Nirav JAMNAPARA (Institute for Plasma Research)

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