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Meeting Materials Science & Technology 2020
Symposium Sintering and Related Powder Processing Science and Technologies
Presentation Title Coarsening of Several Ceramic Particle Systems
Author(s) Daniel J. Delia, William M. Carty, Hyojin Lee
On-Site Speaker (Planned) Daniel J. Delia
Abstract Scope The driving force for sintering and densification is the exchange of solid-vapor surface energy for solid-solid surface energy. Therefore, the solid-vapor surface energy must be related to the amount of measurable surface area, which may be measured by nitrogen adsorption (i.e., B.E.T. method). The potential to promote sintering of different powders should then be related to the reduction in surface energy resulting from the exchange of solid-vapor surface energy for solid-solid surface energy. It is proposed that it may be possible to identify a critical surface area necessary to promote sintering for a given powder chemistry based on the ratio of SV:SS surface energy, with respect to time, temperature, and initial surface area. Results suggest a majority of the powders (i.e., Al<sub>2</sub>O<sub>3</sub>, Y<sub>2</sub>O<sub>3</sub>, and CaO) evaluated displayed a linear reduction in surface area with increasing temperature, while CeO2 exhibited non-linear behavior proposed to be polymorphism at elevated temperatures.
Proceedings Inclusion? Undecided


Coarsening of Several Ceramic Particle Systems
Electron Microscopy Observation of Electric Field Assisted Sintering of Stainless Steel Nanoparticles
Flash Sintering Solid State Ceramic Electrolytes Using a Novel Multi- electrode Approach
Grain Growth Measurements of Anti-thermal Strontium Titanate with Non-destructive High Energy X-ray Diffraction Microscopy (HEDM)
Novel Low-temperature Copper Sintering Paste for Large-area Die Attachment at 200 ℃ in Nitrogen Atmosphere
On the Bending of High-aspect Ratio Freestanding Aerosol Jet Printed Micropillar Arrays during Thermal Sintering
Reduced Pressure Nanosintering during Environmentally Controlled – Pressure Assisted Sintering
Selective Sintering Technique: Modeling and Experimentation
The Effect of Cryogenic Milling and Parameters of Spark Plasma Sintering on Microstructure, Phase Composition and Mechanical Properties of Metastable Beta Titanium Alloy Ti-15Mo
The Effect of Texturing by Applied Magnetic Field on Grain Growth of Alumina

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