| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
12th International Symposium on Green and Sustainable Technologies for Materials Manufacturing and Processing
|
| Presentation Title |
Thermal Insulators with Macroscopic and Microscopic Anisotropy Created by Gelation Freezing Method with Alumina Platelets and Nano-rods |
| Author(s) |
Manabu Fukushima, Yu-ichi Yoshizawa |
| On-Site Speaker (Planned) |
Manabu Fukushima |
| Abstract Scope |
Thermal insulators have been fabricated by freezing gelatin gels including calcined kaolin with various amounts of hexagonal alumina platelets or nano-rods, followed by sintering. Unidirectional macroscopic porosity by the freezing process could be created with accompanying pore walls composed of the platelet grains or nano-rods microscopically longitudinally oriented. The relationship among different contents of the platelets, microstructures, compressive strength and thermal conductivity was examined. Varying platelet or nano-rod contents in the initial gels were found to be effective for controlling porosity and properties in the resultant insulators. The overall morphology and properties of the insulators prepared by gelation-freezing were investigated. |