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Meeting MS&T22: Materials Science & Technology
Symposium Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
Presentation Title Influence of Laser Processing Parameters on Thermoelectric and Microstructural Properties of Bi2Te3
Author(s) Saniya LeBlanc, Eric Fodran, Eric Barnes, Cagri Oztan
On-Site Speaker (Planned) Saniya LeBlanc
Abstract Scope Thermoelectric energy conversion devices are used for thermal management and waste heat recovery. Conventional thermoelectric manufacturing techniques are laborious, allow only planar geometries, and result in considerable waste of material, impeding widespread use of thermoelectric systems. To mitigate these challenges, additive manufacturing has emerged as an alternative. We explored the process-structure-property relationship of laser powder bed fusion of undoped Bi2Te3. Using optimized laser power and scan speed from previous work, we investigated the effects of variation in secondary processing parameters such as layer height, hatch spacing, scan pattern and rescanning on microstructure and thermoelectric properties. Laser processed bulk samples were characterized for elemental composition, microstructure, relative density, and thermoelectric power factor. The results reveal that scan pattern and number of scan can be optimized to enhance the relative density and electrical conductivity, and repeated rescanning caused a change in the majority charge carriers, resulting in a negative Seebeck coefficient.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A-13: Evaluation of Reliability of Using Combined Rheological Methods for the Development of Ceramic Materials for 3D Printing
A-14: Nanomechanical Characterization of 3D Printed Ceramics
A-15: Rheological Study of 3D Printable All-inorganic Thermoelectric Inks for Direct Writing of Micro-thermoelectric Generator
A Study of Lithography-Based Additive Manufacturing of Ceria Ceramics
Additive Manufacturing of Alumina Toughened Zirconia and Zirconia Toughened Alumina
Additive Manufacturing of Mullite Ceramic by Digital Light Processing
Advanced Manufacturing of Controlled SOFC Electrolyte and Electrode Microstructures through Aerosol Deposition
Bonding Mechanisms in Indirect Selective Laser Sintering
Brittle Particle Cold Spray Technology
Ceramic 3D Printing for Investment Casting
Ceramic Additive Manufacturing for Innovative Zirconia-based Material
Direct Ink Writing of Nanoscale Feature Ceramics via Preceramic Polymer-block Copolymer Inks
Effects of Bimodal Particle Size Distribution on Mechanical and Thermal Properties of Densified SiC-Si Composites from Binder Jetting
Exploration of the Underlying Space in Microscopic Images via Deep Learning for Additively Manufactured Piezoceramics
Fabrication of Powder Components with Cooling Channels by Spark Plasma Sintering and Additive Manufacturing
Influence of Laser Processing Parameters on Thermoelectric and Microstructural Properties of Bi2Te3
Mass Customization, Moving Forwards with Additive Manufacturing
Micro-Cold Spray: Effect of Particle Impact Velocity on SiC Film Morphology
Modeling and Monitoring of Thermal Accumulation During Laser Powder Bed Fusion of Cemented Carbides
Multi-material Printing of Reaction Bonded Carbides by Robocasting
Phase-field Modeling of Co-Sintering of Ceramic Electrolyte/Electrode for All Solid-State Li-ion Batteries
Production of 3D Printed Electrodes for Batteries
Rapid Three-dimensional Printing of High-resolution Piezoelectric Structures Using Micro-CLIP
SLA-based Additive Manufacturing of 3D Structures with Surface Activated Silicone Carbide-polymer Composite
Transparent Alumina Fabricated by Energy Efficient Spark Plasma Sintering

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