|About this Abstract
||Materials Science & Technology 2012
||Novel Sintering Processes and News in Conventional Sintering and Grain Growth
||Microstructural Design of Innovative Titania-Based Ceramics for Thermoelectric Applications
||Michael Alberga, James P. Kelly, Olivia A. Graeve
|On-Site Speaker (Planned)
We present a study in which the sintering behavior and microstructural design of titania-based ceramics was accomplished by spark plasma sintering for thermoelectric applications. The initial powders were synthesized using two different methodologies, resulting in differences in surface states of the powders. Powder particle size and morphology were characterized using dynamic light scattering and scanning electron microscopy. The powder properties of the samples from the two sets of powders were matched as closely as possible to allow for the resulting sintering behavior to be more directly comparable. Increasing pressure, instead of temperature, appears to produce a greater positive effect on the characteristics of the sintered samples. Additionally, thermoelectric data for the sintered samples is presented. We find an interesting effect and correlation between the level of reduction in the titania sintered specimens and the thermoelectric behavior of the material.