2012 Fiscal Year Final Research Report
Development of new-type metallic glasses by using multi-step liquid phase separation
| Project/Area Number |
23760667
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Structural/Functional materials
|
|---|
| Research Institution | Osaka University |
|---|
Principal Investigator |
NAGASE Takeshi 大阪大学, 超高圧電子顕微鏡センター, 講師 (50362661)
|
|---|
| Project Period (FY) |
2011 – 2012
|
| Keywords | アモルファス材料 / 金属ガラス |
|---|
| 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.
|
