| Budget Amount *help |
¥40,040,000 (Direct Cost: ¥30,800,000、Indirect Cost: ¥9,240,000)
Fiscal Year 2011: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2010: ¥12,870,000 (Direct Cost: ¥9,900,000、Indirect Cost: ¥2,970,000)
Fiscal Year 2009: ¥23,140,000 (Direct Cost: ¥17,800,000、Indirect Cost: ¥5,340,000)
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| Research Abstract |
Susceptibility of hydrogen embrittlement of high strength steel in atmospheric corrosion condition is enhanced by zinc coating and its sacrificial protection action. On the other hand, it for aluminum alloy coated steel is substantially suppressed. It was explained that the sacrificial potential for aluminum coated steel ranged around. 0. 7V and hydrogen evolution reaction was inhibited in this potential compared with that for zinc coated was. 1. 0V. Amount of hydrogen absorbed into steel depended upon the microstructure of the steel. It increased with number of wet/dry corrosion cycles when the diffusion constant of hydrogen in the steel was very small, such as martensitic steel.
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