| Budget Amount *help |
¥42,250,000 (Direct Cost: ¥32,500,000、Indirect Cost: ¥9,750,000)
Fiscal Year 2023: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2022: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2020: ¥21,060,000 (Direct Cost: ¥16,200,000、Indirect Cost: ¥4,860,000)
Fiscal Year 2019: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
|
|---|
| Outline of Final Research Achievements |
In order to understand the Earth’s inner core dynamics which is probably responsible for its anisotropic structure, we have conducted deformation and diffusion experiments on hcp-Fe and related materials. Rheological property of hcp-Fe determined by deformation experiments suggested that the viscosity of hcp-Fe under the inner core conditions is around 10^19 Pa s or higher. We also determined that viscosity of bcc-Fe is ~5 orders of magnitude lower than that of hcp-Fe, and hcp- and dhcp-iron hydrides are weaker than hcp-Fe only slightly. Fe-Ni interdiffusion coefficients in Fe determined by our experiments were consistent with that by previous study at least below 25 GPa.
|
