|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||L-90: Mechanical Properties of Entropy Stabilized Oxides
||Tyler Harrington, Matthew Quinn, William Mellor, Joshua Gild, Jian Luo, Kenneth Vecchio
|On-Site Speaker (Planned)
The two bulk entropy stabilized oxides of composition (Co<SUB>0.2</SUB>Cu<SUB>0.2</SUB>Mg<SUB>0.2</SUB>Ni<SUB>0.2</SUB>Zn<SUB>0.2</SUB>)O and (Co<SUB>0.2</SUB>Mg<SUB>0.2</SUB>Ni<SUB>0.2</SUB>Sc<SUB>0.2</SUB>Zn<SUB>0.2</SUB>)O were investigated to determine the effect of high configurational entropy on thermal and mechanical properties of oxide ceramics. This study focuses on the synthesis of complex oxide systems with a density greater than 95% demonstrating single-phase, solid-solution compounds, along with the mechanical and thermal properties of the multi-metal-component ceramics. Fully dense samples were fabricated through high-energy ball milling and spark plasma sintering at 1100°C and 50MPa. A hardness and compressive strength comparison between the five individual component oxides and the complex oxides was made to determine the role of entropic stabilization and further understanding of the processing-property-microstructure relationships of this new class of materials. Thermal testing was included to find any unique melting temperatures and thermal conductivity that differ between the individual constituents and the complex oxides.
||Planned: Supplemental Proceedings volume