| Project/Area Number |
13650780
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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 |
Material processing/treatments
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| Research Institution | Osaka University |
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Principal Investigator |
MATSUMOTO Taihei Joining and Welding Research Institute, Research Associate, 接合科学研究所, 助手 (30294135)
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| Co-Investigator(Kenkyū-buntansha) |
FUJII Hidetoshi Joining and Welding Research Institute, Associate Professor, 接合科学研究所, 助教授 (00247230)
NOGI Kiyoshi Joining and Welding Research Institute, Professor, 接合科学研究所, 教授 (40029335)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2002: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2001: ¥2,400,000 (Direct Cost: ¥2,400,000)
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| Keywords | Oscillating drop method / Sessile drop method / Surface tension / Ni / Electromagnetic levitation |
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| Research Abstract |
The surface tension of the molten Ni, Si and Ni-Based superalloys were measured using an oscillating drop method and an improved sessile drop method. In two methods, samples were cut from same parent material and the environmental gas was Ar-3%H2 purified by Pt asbestos and magnesium perchlorate. The oscillating drop method was carried out under microgravity so that the simple surface oscillation can be obtained. The value was measured over a wide temperature range including undercooling state. In the sessile drop method, the symmetry of a sample droplet was confirmed by observing from two directions, and the sharp images were obtained by combination of He-Ne lasers, band-pass filters and high-resolution digital cameras. Reliability of the oscillating drop method was confirmed by comparing the results of the two methods.
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