| Project/Area Number |
11650685
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical properties of metals
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| Research Institution | KYUSHU UNIVERSITY |
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Principal Investigator |
TSUKUDA Noboru Reseach Institute for Applied Mechanics, KYUSHU UNIVERSITY Ass.Prof., 応用力学研究所, 助教授 (90038563)
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| Co-Investigator(Kenkyū-buntansha) |
KURAMOTO Eiichi Reseach Institute for Applied Mechanics, KYUSHU UNIVERSITY Prof, 応用力学研究所, 教授 (30013519)
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| Project Period (FY) |
1999 – 2000
|
| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2000: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1999: ¥2,900,000 (Direct Cost: ¥2,900,000)
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| Keywords | Hydrogen / In-situ X-ray diffraction / Metals / Diffusion / Lattice Parameter / Hydride / in situ measurement / lattice parameter / X ray diffraction / hydrogen charging / Pd / Ni |
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| Research Abstract |
A device for in-situ X-ray diffraction measurements during cathodic hydrogen charging has been developed. Diffracted X-rays are detected through 0.3 mm thick H_2SO_4 flow. The charging current is 1-100 mA/cm^2. The change of lattice parameter for Pd during hydrogen charging and after charging has been clearly demonstrated. Diffusion coefficient of hydrogen atoms in Pd was determined by the time dependence of the lattice parameter and is 3x10^<-7> cm^2s^<-1> at 295K The device is widely applicable for understanding metal-hydrogen systems under various constrained hydrogen environments
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