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2014 | 125 | 2 | 563-566
Article title

Effects of Nb-Alloying on High-Temperature Oxidation of MoSi_2

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Content
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Languages of publication
EN
Abstracts
EN
The effects of alloying with 0.5, 1.0, and 2.0 at.% Nb on oxidation resistance of MoSi_2 are investigated at temperature range of 1400°C-1700°C. Rapid formation of a stable protective layer of silica resulted in a parabolic oxidation rate. The oxide layer thickness and the sample weight increased with increasing oxidation time. Impurities accelerated oxidation rate of MoSi_2 only slightly, however, did not affect the rate controlling mechanism for oxidation. There was no correlation between oxidation rate and the amount of impurity. The values of activation energies for oxidation of pure MoSi_2 and Nb-alloyed samples were similar to activation energy for diffusion of O_2 through silica. Diffusion of O_2 through the oxide scale remained the rate controlling mechanism with or without Nb impurity.
Keywords
EN
Year
Volume
125
Issue
2
Pages
563-566
Physical description
Dates
published
2014-02
References
  • 1. A.K. Vasudevan, J.J. Petrovic, Mater. Sci. Eng. A 155, 1 (1992)
  • 2. J.J. Petrovic, Ceram. Eng. Sci. Proc. 18, 3 (1997)
  • 3. M.G. Hebsur, M.V. Nathal, Structural Intermetallics, The Minerals, Metals and Materials Society, Warrendale (PA) 1997, p. 949
  • 4. K. Kurokawa, H. Houzumi, I. Saeki, H. Takahashi, Mater. Sci. Eng. A 261, 292 (1999)
  • 5. S. Bose, Mater. Sci. Eng. A 155, 217 (1992)
  • 6. H. Inui, T. Nakamoto, K. Ishikawa, M. Yamaguchi, Mater. Sci. Eng. A 261, 131 (1999)
  • 7. Y. Umakoshi, T. Nakano, K. Kishimoto, D. Furuta, K. Hagihara, M. Azuma, Mater. Sci. Eng. A 261, 113 (1999)
  • 8. U.V. Waghmare, E. Kaxiras, V.V. Bulatov, M.S. Duesbery, Modeling Simul. Mater. Sci. Eng. 6, 493 (1998)
  • 9. A. Misra, A.A. Sharif, J.J. Petrovic, T.E. Mitchell, Acta Mater. 48, 925 (2000)
  • 10. A.A. Sharif, A. Misra, T.E. Mitchell, doi: 10.1016/S0921-5093(03)00307-1, Mater. Sci. Eng. A 358, 289 (2003)
  • 11. A.A. Sharif, J.J. Petrovic, A. Misra, T.E. Mitchell, in: Annual Meeting of the American Ceramic Society, Eds.: J.P. Singh, N.P. Bansal, A. Bandyopadhyay, American Ceramic Society, Philadelphia 2000, p. 69
  • 12. A.A. Sharif, A. Misra, J.J. Petrovic, T.E. Mitchell, doi: 10.1016/j.scriptamat.2004.10.027, Scr. Mater. 44, 879 (2001)
  • 13. A.A. Sharif, A. Misra, J.J. Petrovic, T.E. Mitchell, Intermetallics 9, 869 (2001)
  • 14. A.A. Sharif, A. Misra, T.E. Mitchell, doi: 10.1016/j.scriptamat.2004.10.027, Scr. Mater. 52, 399 (2005)
  • 15. J. Schlichting, Mater. Chem. 4, 93 (1979)
  • 16. B.E. Deal, A.S. Grove, J. Appl. Phys. 36, 3770 (1965)
  • 17. H.J. Grabke, G.H. Meier, Oxid. Metals 44, 147 (1995)
  • 18. K. Ito, T. Hayashi, M. Yokobayashi, H. Numakura, doi: 10.1016/j.intermet.2003.12.009, Intermetallics 12, 407 (2004)
  • 19. Y.T. Zhu, M. Stan, S.D. Conzone, D.P. Butt, J. Am. Ceram. Soc. 82, 2785 (1999)
  • 20. C.D. Wirkus, D.R. Wilder, J. Am. Ceram. Soc. 49, 173 (1966)
  • 21. J.B. Berkowitz-Mattuk, R.R. Dils, J. Electrochem. Soc. 112, 583 (1965)
  • 22. K. Natesan, S.C. Deevi, Intermetallics 8, 1147 (2000)
  • 23. A.A. Sharif, doi: 10.1007/s10853-009-4012-8, J. Mater. Sci. 45, 865 (2010)
  • 24. A.A. Sharif, doi: 10.1016/j.jallcom.2011.12.082, J. Alloys Comp. 518, 22 (2012)
  • 25. N. Ponweiser, W. Paschinger, A. Ritscher, J.C. Schuster, K.W. Richter, doi: 10.1016/j.intermet.2010.11.010., Intermetallics 19, 409 (2011)
  • 26. M. Li, L. Song, J. Le, X. Zhang, B. Pei, X. Hu, Mater. Trans. 45, 2785 (2004)
  • 27. M.L.F. Nascimento, E.D. Zanotto, Phys. Chem. Glasses: Eur. J. Glass Sci. Technol. B 48, 201 (2007)
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv125n2128kz
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