The driving force for Marangoni convection during the ultra-rapid solution growth of the high. quality mono-crystalline SiC.

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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.