| Project/Area Number |
04650026
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied materials
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| Research Institution | Daido Institute of Technology |
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Principal Investigator |
MIHAMA Kazuhiro Daido Institute of Technology, Professor, 工学部, 教授 (50023007)
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| Co-Investigator(Kenkyū-buntansha) |
HAYAKAWA Kenji Daido Institute of Technology, Lecturer, 工学部, 講師 (50075909)
IWAMA Saburou Daido Institute of Technology, Professor, 工学部, 教授 (00075904)
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| Project Period (FY) |
1992 – 1993
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| Project Status |
Completed (Fiscal Year 1993)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1993: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1992: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | Quasicrystals / Mesoscopic particles / Crystal growth / Gas evaportation / Electron microscopy / メゾンコピット粒子 |
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| Research Abstract |
The purpose of the present project is that an establishmant of the preparation method of quasicrystalline particles with uniform size is tried. The establishment may bring about a possibility of application of quasicrystalline particles as coating materials or polisheng powder for ultra-finishing.
A working chamber of stainless steel constructed is 25cm in diameter, 45cm in hight and evacuated down to 5x10^<-4> Pa by using a turbo-molecular pump.
For control of the particle size, a downward evaporation of Al-Mn alloy has tried so as to form only outer zone among the three growth zones in ordinary gas evaporation technique. However, the trial has failed due to a reaction of the alloy with the source materials such as W, Ta.
Next, the condition of which the all particles prepared in the work chamber are quasicrystalline phase without the equilibrium alloy phase has been searched by the function of capture duration of particles, evaporation temperature and gas pressure. Howerer, it was really difficult to find the condition and is required further investigation on the preparation technique.
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