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Meeting MS&T23: Materials Science & Technology
Symposium Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
Presentation Title Mechanical and Thermal Properties of Entropy Stabilized Oxides
Author(s) Ravi Kumar
On-Site Speaker (Planned) Ravi Kumar
Abstract Scope Precise control of configurational entropy has opened new avenues to fine-tune material properties in multi-component entropy stabilized ceramics. However, factors such as heat-treatment and nucleation of secondary phases and their role on the mechanical properties including thermal characterization yields interesting results. We have performed controlled heat-treatment experiments of the multicomponent oxide system [(MgNiCoCuZn)O] and investigated the variation in the mechanical and thermal properties. The rationale in the observed variation of the properties are systematically understood using neutron diffraction, EELS spectroscopy, multivariate statistical analysis (MSA) on a STEM-EDX mapping and molecular dynamics simulation. Interestingly, it was observed that with decrease in Cu ion concentration in the matrix, the Young’s modulus and hardness increased remarkably while the coefficient of thermal expansion decreased. Similarly, an increased nucleation of CuO precipitates led to the improvement of fracture toughness of the material by 15%, while its thermal conductivity remained unaltered.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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Controlled Synthesis and Dimensionalities of Metal Halide Perovskites by Solution-based Approaches
Design of Ordering in Double Transition Metal Mo2Nb2C3Tx MXenes
Designing Nanostructures in Complex Concentrated and Entropy Stabilized Oxide Thin Films
Developments of Perovskite-Structured Transparent Conducting Electrode for Perovskite Solar Cells: La-Doped SrSnO3 Bulk and Thin Films
Effect of 2D MXenes on the Properties of ZrC-Ti3C2 Composites
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Graphene-coated Wires for Structural Application: Improved Mechanical Properties, Outstanding Strength Efficiency, and Enhancement Mechanism
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Growth and Characterization of Novel Single Crystals as Potential Thermoelectric Materials
Hydroxide Derived Nanomaterials and Their Properties
In Situ Solid-Phase Crystallization of Layered Complex Oxides from Amorphous Precursors in the Transmission Electron Microscope
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Investigation of Sodium and Potassium Ion Storage Behavior of WS2 Nanosheet Loaded Polymer Derived SiOC Fibers
Iron Nanoparticles for Magnetic Imaging Applications
L-2: Improved Electrochemical Properties of SiOC Composite for High Li Storage
L-3: SiC Fiber-reinforced CMCs: Towards High-temperature Structural Materials
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Mechanical Characterization of Thin Films via Constant Strain Rate Membrane Deflection Experiments
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Novel Insights into the Microwave-assisted Polyol Synthesis of Metal Nanoparticles for Catalytic Air Pollution Control
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Polymer Derived Hierarchically Porous Silicon Oxycarbide Ceramics through Bio-templating
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Ultra-Resolution 3-Dimensional Nanopatterning of Functional Materials
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