Development of new-type metallic glasses by using multi-step liquid phase separation
| Project/Area Number |
23760667
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Structural/Functional materials
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| Research Institution | Osaka University |
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Principal Investigator |
NAGASE Takeshi 大阪大学, 超高圧電子顕微鏡センター, 講師 (50362661)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | アモルファス材料 / 金属ガラス / 液体分離 / ワイヤー / ファイバー / アモルファス / 液体急冷 / 電子顕微鏡 / 材料組織 |
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| Research Abstract |
A dual-layer ribbon of Co-Si-B-Cu alloy was prepared by the single-roller melt-spinning method. The substrate surface comprised Co-Si-B-based amorphous phase with Cu crystalline nanoscale globules, while the free surface showed a thin crystalline Cu layer . A macroscopically separated unique structure was obtained by the simultaneous occurrence of liquid phase separation of the Co-Cu-based alloy system and amorphous phase formation in the Co-Si-B alloy layer. Rapidly-solidified wire with macroscopically separated structure was formed in Fe-Si-B-Cu alloy by Arc-melt-type melt-extraction method. Unique core-wire / surface-cover-layer structure composed with core Fe-Si-B amorphous based alloy and cover Cu crystal was formed through liquid phase separation during rapid quenching of thermal melt.
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Report
(3 results)
Research Products
(4 results)
