| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
High Entropy Nitrides: Spark Plasma Sintering of Mechanically Alloyed Nitrides to Investigate the Mechanical, Tribological, and Oxidation Properties |
| Author(s) |
Ganesh Walunj, Tushar Borkar, Manoj Mugale |
| On-Site Speaker (Planned) |
Ganesh Walunj |
| Abstract Scope |
Ultra-high temperature ceramics (UHTCs) consist of a mixture of different compounds of ceramics like boride, carbide, diboride, and nitride of the transition metals. The UHTCs show prominent characteristics such as higher melting point, higher oxidation resistance, lower thermal conductivity, higher yield strength, and microhardness. High entropy ceramic (HEC) is a multi-component alloy similar to the high entropy alloy (HEA) specifically developed for hypersonic vehicles, nuclear reactors, and high-temperature applications. In the current study, mechanical alloying (MA) and spark plasma sintering (SPS) approach were used to develop equiatomic HEC (Hf0.2Nb0.2Ta0.2Ti0.2Zr0.2)N. High-entropy nitrides have been consolidated using the two-stage technique. All five elements were mechanically alloyed in using a planetary ball mill followed by spark plasma sintering at 1800-2000 C. In addition, the material's mechanical, tribological, and oxidation characteristics were investigated. The fabricated sample exhibits 1650Hv microhardness, which is greater than the result of the rule of mixture. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Powder Materials |