About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
14th Symposium on Green and Sustainable Technologies for Materials Manufacturing and Processing
|
| Presentation Title |
L-6: Evaluation of Dewaxing Behavior of Alumina Green Body by a Combined OCT/TG/FT-IR System and Thermomechanical Analysis |
| Author(s) |
Mariko Minami, Junichi Tatami, Motoyuki Iijima |
| On-Site Speaker (Planned) |
Mariko Minami |
| Abstract Scope |
In the dewaxing process to remove organic compounds such as binder and lubricant from ceramic green bodies, crack formation and deformation have been important issues due to gas generation by thermal decomposition and oxidation of organic compounds. To avoid such problems, extremely low heating rates and long holding times have been applied for dewaxing, but these solutions were not always green processes. The objectives of this study were to understand and control dewaxing behavior and to optimize the dewaxing process by development of a combined OCT/TG/FT-IR system for simultaneous analysis of weight change and exhaust gas by optical coherence tomography developed for medical applications, and by evaluation of mechanical properties of green bodies by thermomechanical analysis. By using this combined system and TMA, it was found that changes in the internal structure, strength, and Young's modulus of the compacts due to dewaxing cause cracks and deformation. |