About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
14th Symposium on Green and Sustainable Technologies for Materials Manufacturing and Processing
|
Presentation Title |
Change in the Density Distribution during Sintering of Alumina Ceramics Visualized by In-situ OCT Observation |
Author(s) |
Junichi Tatami, Mitsuki Tajima, Motoyuki Iijima, Takuma Takahashi |
On-Site Speaker (Planned) |
Junichi Tatami |
Abstract Scope |
The density distribution of ceramics develops during the firing process. However, the density distribution and its changes have not been fully elucidated. In this study, the change in the density distribution of alumina ceramics during sintering was clarified by in-situ optical coherence tomography (OCT) observation of the internal structure.
First, a calibration curve was obtained for the relationship between density and the attenuation rate of the OCT signal. Mapping of the attenuation rate inside alumina ceramics was obtained through in situ and 3D OCT observations at high temperatures using an infrared heating furnace. Density distribution was estimated from the attenuation rate mapping and calibration curves. It was shown that the density distribution developed during sintering and became narrower in more homogeneous green bodies. |