| Budget Amount *help |
¥194,870,000 (Direct Cost: ¥149,900,000、Indirect Cost: ¥44,970,000)
Fiscal Year 2018: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2017: ¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2016: ¥23,530,000 (Direct Cost: ¥18,100,000、Indirect Cost: ¥5,430,000)
Fiscal Year 2015: ¥30,160,000 (Direct Cost: ¥23,200,000、Indirect Cost: ¥6,960,000)
Fiscal Year 2014: ¥116,870,000 (Direct Cost: ¥89,900,000、Indirect Cost: ¥26,970,000)
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| Outline of Final Research Achievements |
To elucidate the essence of size effects on strength of metallic nano-films with thickness on the order of 10 - 1,000 nm, we developed an in situ field emission scanning electron microscope mechanical testing/analysis system under a controlled environmental condition to investigate the effects of surface oxide layer and film thickness itself separately. We investigated into the size effects on fracture toughness, fatigue and creep strength, and mechanisms of deformation and fracture, and clarified that the thickness or presence/absence of a thin surface oxide layer strongly affects the strengths of the nano-films.
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