2011 Fiscal Year Final Research Report
The driving force for Marangoni convection during the ultra-rapid solution growth of the high. quality mono-crystalline SiC.
| Project/Area Number |
22760576
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Metal making engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2011
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| Keywords | シリコンカーバイド / 溶液成長 / マランゴニ対流 / 表面張力 |
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| Research Abstract |
In the present work, it was aimed to determine the major driving force for Marangoni convection during the FZ growth of silicon carbide. The experimental apparatus of the maximum bubble pressure method for alloy samples was fabricated, and then measurements of surface tensions of Fe-Si-C alloys were conducted at 1250～1450℃. The surface tensions of binary Fe-Si alloys and ternary Fe-Si-C alloys are similar, and the carbon effect on the surface tension was not observed. Accordingly, it was speculated that the Marangoni flow is driven by the temperature difference in the Fe-Si solvent during the solution growth process.
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