| Budget Amount *help |
¥43,290,000 (Direct Cost: ¥33,300,000、Indirect Cost: ¥9,990,000)
Fiscal Year 2022: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2021: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2020: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2019: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
Fiscal Year 2018: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
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| Outline of Final Research Achievements |
The purpose of the study is to visualize the location of hydrogen on and near the surface of materials with a scanning electron microscope-level resolution, and to observe the behavior of hydrogen in a dynamic environment and in a microscopic field.
Using Operando Hydrogen Microscope, patent No.06796275 (2020)), hundreds of time-depending images of the distribution of hydrogen which permeated through structural materials were observed.
Hydrogen images were compared with local distribution images of the material structure, by using image analysis in computational science techniques. The hydrogen diffusion coefficient and permeation flow rate, which depend on the local crystal structure, were successfully determined. We also found the unique diffusion rate and permeation flow rate at the coincidence boundary. As the hydrogen diffusion barrier material, we succeeded in correlating the composition of the segregated chromium oxide film and the hydrogen permeation behavior.
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