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Initial Wetting and Spreading Rates Between SiC and CaO-SiO2-MnO Slag

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Abstract

The wetting of CaO-SiO2-MnO slag on silicon carbide was studied with a variety of slag compositions at 1823 K (1550 °C). Wetting experiments were performed by the dispensed drop technique. We observed complete wetting of the slag on SiC (within 1 second) without a bubble reaction regardless of the basicity (=CaO/SiO2 = C/S ratio). However, after 8 seconds, the bubble reaction was observed under conditions of C/S = 0.8 and 1.1, whereas it was not observed at temperatures lower than 1823 K (1550 °C). The contact angle was independent of MnO content, while the spreading rate increased with the increasing MnO content at the early stage of wetting. Inertial force acts on the early stage of spreading, and viscous force acts with lower MnO content due to higher viscosity. The low-viscosity slag did not fit with the nonreactive viscous model. However, the high-viscosity slag fitted the model well.

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Acknowledgments

This work was supported by the Industrial Strategic Technology Development Program (#10033389) funded by the Ministry of Trade, Industry & Energy of Korea.

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Authors and Affiliations

  1. Department of Advanced Materials Engineering, Korea Polytechnic University, Siheung, 429-793, Korea

    Jungseon Park Graduate Student, Junmo Jeon Graduate Student & Yongsug Chung Professor

  2. Department of Consilience, Korea Polytechnic University, Siheung, 429-793, Korea

    Kyuyoung Lee Professor

  3. Department of Materials Engineering, Hanyang University, Ansan, 426-791, Korea

    Joo Hyun Park Professor

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  1. Jungseon Park Graduate Student
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  2. Junmo Jeon Graduate Student
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  3. Kyuyoung Lee Professor
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  4. Joo Hyun Park Professor
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Correspondence to Joo Hyun Park Professor or Yongsug Chung Professor.

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Manuscript submitted November 10, 2015.

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Park, J., Jeon, J., Lee, K. et al. Initial Wetting and Spreading Rates Between SiC and CaO-SiO2-MnO Slag. Metall Mater Trans B 47, 1832–1838 (2016). https://doi.org/10.1007/s11663-016-0606-0

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  • DOI: https://doi.org/10.1007/s11663-016-0606-0

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