Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Anisotropy of Wetting of Molten Fe on α-Al2O3 Single Crystal

  • Cho, Seung-Youn (Department of Materials Science & Engineering, Korea University) ;
  • Lee, Joon-Ho (Department of Materials Science & Engineering, Korea University)
  • Published : 2008.01.31
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Abstract

The wetting behavior of molten Fe on ${\alpha}-Al_2O_3$ single crystals with three different crystallographic orientations, $R(01\bar{1}2),\;A(11\bar{2}0),\;and\;C(0001)$, was investigated using the sessile drop method under a 10%$H_2-Ar$ atmosphere at 1873 K. It was found that the differences in the contact angle of the three differently oriented ${\alpha}-Al_2O_3$ single crystals were not significant (within $5^{\circ}$, which corresponded to the changes in the work of adhesion of $157mJ/m^2$) due to the surface reconstruction.

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