| Budget Amount *help |
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2015: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2014: ¥10,920,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥2,520,000)
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| Outline of Final Research Achievements |
In this study, hydrogen absorption into iron was investigated by the measurements of hydrogen permeation current responses induced by stimulating hydrogen evolution reaction with potential modulation. Hydrogen absorption efficiency of iron was evaluated as a function of electrode potential by using both DC and AC components of the current responses. The hydrogen absorption efficiency of iron increased with decreasing cathodic polarization. The results suggested that hydrogen absorption kinetics can be considered to be faster than diffusion of hydrogen atoms in iron and to be under a quasi-equilibrium condition.
Measurements of laser speckle patterns of iron surface with hydrogen permeation current was successfully done. The laser speckle patterns changed with the response of hydrogen permeation current, suggesting that surface distribution of hydrogen permeation current can be detected.
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