Surface Diffusivity under High-Pressure Gas |
| |
| Authors: | Makoto Nanko Kozo Ishizaki Takao Fujikawa Yoshihito Kondo |
| |
| Affiliation: | Department of Materials Science and Engineering, School of Mechanical Engineering, Nagaoka Gijutsu-Kagaku Daigaku (Nagaoka University of Technology), Nagaoka, Niigata 940–21, Japan;Kobe Steel Ltd, Co., Takasago, Hyogo 676, Japan;Kagawa Industrial Technology Center, Takamatsu, Kagawa 761, Japan |
| |
| Abstract: | The sintering behavior of TiO2 under high-pressure gas (100 MPa) was studied with respect to densification rate, decreasing rate of specific surface area, and narrowing rate of pore size distribution. At the low sintering temperature (800°C) used in this study, the densification rate under high- pressure gas was similar to that under low (i.e., 1 atm) pressure. The specific surface area decreased and the pore size distribution narrowed at a faster rate under high- pressure gas than under low-pressure gas. These results imply that high-pressure gas enhances surface diffusion. |
| |
| Keywords: | |
|
|
