Research

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Ambreen Nisar, PhD

  1. Spark Plasma Joining of Ultra-High Temperature Ceramics (UHTCs) 
    • Understanding the mechanism of joining in similar and dissimilar UHTCs 
    • Evaluating the structural integrity of the UHTC joint at different length scales 
    • Comparing the oxidation resistance of UHTC joint with that of parent UHTCs under simulated re-entry conditions  
  2. High-Entropy UHTCs 
    • Fabrication of multi-component high entropy UHTCs 
    • To understand the concept of solid-solution to high-entropy phase formation in UHTCs 
    • Evaluating the strength and oxidation resistance in HE-UHTCs  
  3. To understand the Structural Integrity of Complex Oxide Scales for Improved Oxidation Resistance of UHTCs 
     
  4. Light and strong UHTC foam for thermal insulation

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Giuseppe Bianco

Understanding Oxidation Behavior of Ultra High Temperature Ceramics (UHTC) by Applying Machine Learning Techniques

  • Understanding the coorrelation of different parameters on the oxidation resistence for different UHTC materials by applying machine learning techniques.
  • Creating a model that help us iterate between different sample composition, to get a prediction of the oxidation behavior of the specimen.

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Rodolfo Fernandez
Computational Analysis of Spark Plasma Sintering, Optimization and Prediction in Consolidation of Nanomaterials 

  • The capability of predicting SPS runs brings the hope of new materials developed on a more efficient and faster manner.
  • By coupling the different systems that form SPS at a computational level, a model can be created and thus aid in the SPS process.
  • The high demand for new materials, especially energy materials including nuclear applications, will make this technique a valuable asset for both industry and research.

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Catalina Young
Fundamentals and understanding of Spark Plasma Sintering for the consolidation of ultra-high temperature ceramics and other ceramic materials.

  • As an experimentalist, my research also focuses on the synthesis and functional testing of these materials, for example, ultra-high-temperature ceramics testing is by plasma jet oxidation to mimic atmospheric re-entry environments these materials are subject to.
  • Due to the nature of Spark Plasma Sintering, the mechanisms of sintering are dependent upon their intrinsic material properties, such as surface energies and dielectric properties, as well as physical properties such as particle size, which can lead to improvements in particle packing.
  • Materials that are electrically insulating or dielectric materials will sinter differently via Spark Plasma Sintering in comparison to materials that are conductive due to the electric field effects and current passed during sintering.

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