| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
|
| Presentation Title |
Using Organic Acids to Densify Ceramics |
| Author(s) |
Julian Fanghanel, Clive Randall |
| On-Site Speaker (Planned) |
Julian Fanghanel |
| Abstract Scope |
Cold sintering process (CSP) was used to fabricate dense monolithic samples of Mg2SiO4 (forsterite). This is a material of interest in microwave dielectric ceramics, particularly for ceramic based 5G antennas. Dense ceramics were achieved with relatively high densities (>90%) under mild temperature conditions (<200°C), using organic acids solutions as a transient solvent, and under pressure were obtained in 4 hours. A study of a simple series of commercially important organic acids with varying degrees of chelating power was used to assess densification and microstructural evolution. X-Ray Diffraction showed that the primary phase, Mg2SiO4 (forsterite), was maintained after CSP with minimal amounts of Magnesium oxide impurities. The microstructure of the material was characterized through SEM to determine the average grain size, make comparisons for the microstructure for various densities, and to demonstrate evidence of sintering via triple points, coarsening, and necking. |