Wetting Behavior of Calcium Ferrite Slags on Cristobalite Substrates

  • Mingrui Yang
  • Xuewei Lv
  • Ruirui Wei
  • Jian Xu
  • Chenguang Bai
Article
  • 48 Downloads

Abstract

Calcium ferrite (CF) is a significant intermediate adhesive phase in high-basicity sinters. The wettability between calcium ferrite (CF) and gangue plays an important role in the assimilation process. The wettability of CF-based slags, in which a constant amount (2 mass pct.) of Al2O3, MgO, SiO2, and TiO2 was added, on solid SiO2 (cristobalite) substrates at 1523 K (1250 °C) was investigated. The interfacial microstructure and spreading mechanisms were discussed for each sample. All the tested slag samples exhibited good wettability on the SiO2 substrate. The initial apparent contact angles were in the range of 20 to 50 deg, while the final apparent contact angles were ~ 5 deg. The wetting process could be divided into three stages on the basis of the change in diameter, namely the “linear spreading” stage, “spreading rate reduction” stage, and “wetting equilibrium” stage. It was found that the CF-SiO2 wetting system exhibits dissolutive wetting and the dissolution of SiO2 into slag influences its spreading process. The spreading rate increases with a decrease in the ratio of viscosity to interfacial tension, which is a result of the addition of Al2O3, MgO, SiO2, and TiO2. After cooling, a deep corrosion pit was formed in the substrate and a diffusion layer was generated in front of the residual slag zone; further, some SiO2 and Fe2O3 solid solutions precipitated in the slag.

Notes

Acknowledgment

This study was performed with the financial support of Natural Science Fund of China for Excellent Young Scholars (No. 51522403).

References

  1. 1.
    P.R. Dawson, J. Ostwald, and K.M. Hayes, Trans. Inst. Min. Metall. C, 1985, vol. 94, pp. 71–8.Google Scholar
  2. 2.
    L-H. Hsieh and J.A. Whiteman, ISIJ Int., 1989, vol. 29, pp. 24–32.CrossRefGoogle Scholar
  3. 3.
    L-H. Hsieh and J.A. Whiteman, ISIJ Int., 1989, vol. 29, pp. 625–34.CrossRefGoogle Scholar
  4. 4.
    N.J. Bristow and A.G. Waters, Trans. Inst. Min. Metall. C, 1991, vol. 100, pp. 1–10.Google Scholar
  5. 5.
    I. Shigaki, M. Sawada, and N. Gennai, Trans. Iron Steel I. Japan,1986, vol. 26, pp. 503–11.CrossRefGoogle Scholar
  6. 6.
    C.E. Loo, K.T. Wan, and V.R. Howes, Ironmaking & Steelmaking,1988, vol. 15, pp. 279–85.Google Scholar
  7. 7.
    T.R.C. Patrick and R.R. Lovel, ISIJ Int., 2001, vol. 41, pp. 128–35.CrossRefGoogle Scholar
  8. 8.
    T. Mukherjee and J.A. Whiteman. Ironmaking & Steelmaking, 1985, vol. 12, pp. 151–5.Google Scholar
  9. 9.
    J. Ostwald, BHP Tech. Bull., 1981, vol. 25, pp. 13–20.Google Scholar
  10. 10.
    N.A.S. Webster, M.I. Pownceby, I.C. Madsen, and J.A. Metall. Mater. Trans. B, 2012, vol. 43B, pp. 1344-57.CrossRefGoogle Scholar
  11. 11.
    J.D.G. Hamilton, B.F. Hoskins, W.G. Mumme, W.E. Borbidge, and M.A. Montague, Neues Jb. Miner. Abh., 1989, vol. 161, pp. 1–26.Google Scholar
  12. 12.
    M.I. Pownceby, J.M.F. Clout, and M.J. Fisher-White, Trans. Inst. Min. Metall. C, 1998, vol. 107, pp. 1–10.Google Scholar
  13. 13.
    M.I. Pownceby and T.R.C. Patrick, Eur. J. Miner, 2000, vol. 12, pp. 455–68.CrossRefGoogle Scholar
  14. 14.
    M.I. Pownceby and J.M.F. Clout, Trans. Inst. Min. Metall. C, 2000, vol. 109, pp. 36–48.Google Scholar
  15. 15.
    T.R.C. Patrick and M.I. Pownceby: Metall. Mater. Trans. B, 2002, vol. 33B, pp. 79–89.CrossRefGoogle Scholar
  16. 16.
    X. Ding, X.M. Guo, C Y Ma. Metall. Mater. Trans. B, 2015, vol. 46, pp. 1146-53.CrossRefGoogle Scholar
  17. 17.
    X Ding, X M Guo. Metall. Mater. Trans. B. 2014, vol. 45, pp.1221-31.CrossRefGoogle Scholar
  18. 18.
    B Yu, X.W. Lv, S.L. Xiang, J.Q. Yin, X. Jian. Metall. Mater. Trans. B, 2016, vol. 47B, 2063-71.CrossRefGoogle Scholar
  19. 19.
    S. Kim, K. Lee, and Y. Chung. Metall. Mater. Trans. B. 2016, vol. 47B, pp. 1209-15.CrossRefGoogle Scholar
  20. 20.
    S.M. Seo, D.S. Kim and Y.H. Paik. Met. Mater. Int., vol. 7(5), 2001, pp. 479–83.CrossRefGoogle Scholar
  21. 21.
    H. Abdeyazdan, N. Dogan, M.A. Rhamdhani, M.W. Chapman, and B.J. Monaghan: Metall. Mater. Trans. B, 2014, published online.Google Scholar
  22. 22.
    B Yu, X.W. Lv, S.L. Xiang, C.G. Bai, J.Q. Yin, ISIJ Int. 2015, vol. 55, pp. 483-90.CrossRefGoogle Scholar
  23. 23.
    Choi and Lee, ISIJ Int., 2003, vol. 43, p. 1348.Google Scholar
  24. 24.
    B Yu, X.W. Lv, S.L. Xiang, C.G. Bai, J.Q. Yin, ISIJ Int. 2015, vol. 55, pp. 1558-64.CrossRefGoogle Scholar
  25. 25.
    K. Nakashima, N. Saito, S. Shinozaki, R. Tanaka, T. Maeda, M. Shimizu and K. Mori. ISIJ Int.,2004. vol. 44, pp.2052-59.CrossRefGoogle Scholar
  26. 26.
    A. V. Pocius, Adhesion and Adhesion Technology, Elsevier, New York, 2002, p. 30.Google Scholar
  27. 27.
    T. P. Yin, J. Phys. Chem.,1969, vol. 73, pp. 2413-26.CrossRefGoogle Scholar
  28. 28.
    S. Hara, Text for Okayama Ceramic Center Seminar, Okayama Ceramic Center, Okayama, 1994.Google Scholar
  29. 29.
    K. Morinaga, H. Takebe and Y. Kuromitsu, Ceramic Microstructures, Plenum Press, New York and London, 1998, pp. 543.Google Scholar
  30. 30.
    M. Hanao, T. Tanaka, M. Kawamoto and T. Kouji, ISIJ Int.,2007, vol.47, pp. 935-42.CrossRefGoogle Scholar
  31. 31.
    R. D. Shannon, Acta Crystallogr. A, 1976, vol. 32A, pp. 751.CrossRefGoogle Scholar
  32. 32.
    K. C. Mills and B. J. Keene: Int. Mater. Rev, 1987, 32, pp. 1.CrossRefGoogle Scholar
  33. 33.
    G. J. Janz and R. P. T. Tomkins, J. Phys. Chem. Ref. Data, 1983, 12, pp. 591.CrossRefGoogle Scholar
  34. 34.
    Warren J A, Boettinger W J, Acta Materialia, 1998, 46(9), pp. 3247-64.CrossRefGoogle Scholar
  35. 35.
    Yost F G, Otoole E J, Acta Meterialia, 1998, 46(14), pp. 5143-51.CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society and ASM International 2018

Authors and Affiliations

  • Mingrui Yang
    • 1
  • Xuewei Lv
    • 1
  • Ruirui Wei
    • 1
  • Jian Xu
    • 1
  • Chenguang Bai
    • 1
  1. 1.School of Materials Science and EngineeringChongqing UniversityChongqingChina

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