| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Manufacturing and Processing of Advanced Ceramic Materials
|
| Presentation Title |
A Novel Room-temperature Synthesis Technique for Producing High-density Electroceramic Composites |
| Author(s) |
Evan C. Smith, Rick Ubic |
| On-Site Speaker (Planned) |
Evan C. Smith |
| Abstract Scope |
Room-temperature fabrication represents a major technological leap in ceramic processing techniques. This procedure has the potential to save a significant amount of energy because it avoids use of the high temperatures needed for conventional ceramic sintering techniques. In this work, a novel approach is taken to achieve high densities (>90%) in ceramic compacts at room temperature. The electroceramic filler material (Ba<sub>x</sub>Sr<sub>1-x</sub>TiO<sub>3</sub> or PbZr<sub>1-y</sub>Ti<sub>y</sub>O<sub>3</sub>) is mixed with an aqueous solution of a dielectric binder material (<i>e.g.</i> Li<sub>2</sub>MoO<sub>4</sub>) and pressed in a cylindrical die under high pressure and high vacuum using a vacuum-assisted uniaxial press. The die is then immersed in a bath sonicator for various times, after which it is pressed again. A major advantage of this technique is that it uses a relatively small amount of binder material (~15vol%); thus, the electroceramic filler material is the dominant phase in the resultant composite pellets. |