Publication | Open Access
High entropy Sr((Zr<sub>0.94</sub>Y<sub>0.06</sub>)<sub>0.2</sub>Sn<sub>0.2</sub>Ti<sub>0.2</sub>Hf<sub>0.2</sub>Mn<sub>0.2</sub>)O<sub>3−</sub><sub>x</sub> perovskite synthesis by reactive spark plasma sintering
86
Citations
29
References
2019
Year
Materials EngineeringMaterials ScienceHigh Entropy SrSinteringHigh Temperature MaterialsNanoengineeringHigh Entropy PerovskiteEngineeringReactive SinteringPerovskite ModuleApplied PhysicsPerovskite MaterialsHalide PerovskitesSpark Plasma SinteringLead-free PerovskitesFunctional MaterialsMultiprincipal Element AlloyPowder Synthesis
A rising interest in entropy-stabilized oxides in recent years has been driven by their attractive functional properties. Their synthesis usually requires prolonged exposure at high temperature to promote solid-state diffusion without the application of pressure. In this work, we report the synthesis of a high entropy perovskite, Sr((Zr0.94Y0.06)0.2Sn0.2Ti0.2Hf0.2Mn0.2)O3−x, in a relatively short time (minutes instead of hours) using a spark plasma sintering (SPS) furnace. Comparative analysis showed that conventional pressureless sintering at 1500°C for 2 h results in porous materials with large thermodynamically stable pores (tens of µm), while SPS processing produces dense materials in a single step by reactive sintering at 1475°C in 9 min. SPS is therefore an attractive route for the production, synthesis and sintering of dense high-entropy oxides.
| Year | Citations | |
|---|---|---|
Page 1
Page 1