Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Growth of Al2O3/Al Composite by Directed Metal Oxidation of Al Surface Doped with Sodium Source

  • Park, Hong Sik (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Dong Seok (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Do Kyung (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology)
  • Received : 2013.11.12
  • Accepted : 2013.11.19
  • Published : 2013.11.30
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Abstract

Both an unreinforced $Al_2O_3$/Al matrix and a ${\alpha}-Al_2O_3$ particulate reinforced composite have been produced by the oxidation of an Al surface doped with NaOH in the absence of any other dopant. Fabrication of the matrix was initiated by the formation of $NaAlO_2$, which provides a favorable surface structure for the matrix formation by breaking the protective $Al_2O_3$ layer on Al. During the matrix growth, the external surface of the growth front was covered with a very thin sodium-rich oxide. A cyclic formation process of the sodium-rich oxide on the growth surface was proposed for the sodium-induced directed metal oxidation process. This process involves dissolution of the sodium-rich oxide, motion of Na to the growth front, and re-formation of the oxide on the surface. Near-net-shape composites were fabricated by infiltrating an $Al_2O_3$/Al matrix into a ${\alpha}-Al_2O_3$ particulate preform, without growth barrier materials. The infiltration distance increased almost linearly in the NaOH-doped preform.

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References

  1. A. J. Moulson, "Review: Reaction-Bonded Silicon Nitride-its Formation and Properties," J. Mater. Sci., 14 [5] 1017-51 (1979). https://doi.org/10.1007/BF00561287
  2. P. Popper, "The Preparation of Dense Self-Bonded Silicon Carbide," pp. 209-17 in Special Ceramics Heywood, London, 1960.
  3. S. Wu, D. Holz, and N. Claussen, "Mechanisms and Kinetics of Reaction-Bonded Aluminum Oxide Ceramics," J. Am. Ceram. Soc., 76 [4] 970-80 (1993). https://doi.org/10.1111/j.1151-2916.1993.tb05321.x
  4. M. S. Newkirk, A. W. Urquhart, and H. R. Zwicker, "Formation of $Lanxide^{TM}$ Ceramic Composite Materials," J. Mater. Res., 1 [1] 81-9 (1986). https://doi.org/10.1557/JMR.1986.0081
  5. O. Salas, H. Ni, V. Jayaram, K. C. Vlach, C. G. Levi, and R. Mehrabian, "Nucleation and Growth of $Al_2O_3/Metal$ Composites by Oxidation of Aluminum Alloys," J. Mater. Res., 6 [9] 1964-81 (1991). https://doi.org/10.1557/JMR.1991.1964
  6. A. S. Nagelberg, S. Antolin, and A. W. Urquhart, "Formation of $Al_2O_3/Metal$ Composites by the Directed Oxidation of Molten Aluminum-Magnesium-Silicon Alloys: Part II, Growth Kinetics," J. Am. Ceram. Soc., 75 [2] 455-62 (1992). https://doi.org/10.1111/j.1151-2916.1992.tb08201.x
  7. H. S. Park and D. K. Kim, "Effect of $SiO_2$ Surface Dopant on the Formation of $Al_2O_3/Al$ Composites by Directed Metal Oxidation of Aluminum Alloy," J. Am. Ceram. Soc., 84 [11] 2526-30 (2001). https://doi.org/10.1111/j.1151-2916.2001.tb01047.x
  8. P. Xiao and B. Derby, "Alumina/Aluminum Composites Formed by the Directed Oxidation of Aluminum Using Sodium Hydroxide as a Surface Dopant," J. Am. Ceram. Soc., 77 [7] 1771-76 (1994). https://doi.org/10.1111/j.1151-2916.1994.tb07049.x
  9. X. Gu and R. J. Hand, "The Use of Lithium as a Dopant in the Directed Melt Oxidation of Aluminum," J. Eur. Ceram. Soc., 16 [9] 929-35 (1996). https://doi.org/10.1016/0955-2219(96)00019-2
  10. W. P. Tai, T. Watari, and T. Torikai, "Fabrication of $Al_2O_3/Al$ Composites by Reactive Melt Infiltration," Am. Ceram. Soc. Bull., 76 [4] 86-9 (1997).
  11. J. G. Li, "Wetting of Ceramic Materials by Liquid Silicon, Aluminum, and Metallic Melts Containing Titanium and Other Reactive Elements: A Review," Ceram. Int., 20 [6] 391-412 (1994). https://doi.org/10.1016/0272-8842(94)90027-2
  12. L. F. Mondolfo, Aluminum Alloys-Structure and Properties, p.333, Butterworth Press Ltd., London & Tonbridge, 1976.
  13. E. Breval, M. K. Aghajanian, and S. J. Luszcz, "Microstructure and Composition of Alumina/Aluminum Composites Made by Directed Oxidation of Aluminum," J. Am. Ceram. Soc., 73 [9] 2610-14 (1990). https://doi.org/10.1111/j.1151-2916.1990.tb06735.x
  14. E. Manor, H. Ni, and C. G. Levi, "Microstructure Evolution of SiC/$Al_2O_3$/Al-Alloy Composites Produced by Melt Oxidation," J. Am. Ceram. Soc., 76 [7] 1777-87 (1990).
  15. P. Gros, C. Chatillon, and M. Fouletier, "Sodium-Aluminum-Oxygen Phase Diagram and its Application to Solid-State Electrochemistry," J. Electrochem. Soc., 138 [1] 289-95 (1991). https://doi.org/10.1149/1.2085557
  16. E. W. Washburn, "The Dynamics of Capillary Flow," Phys. Rev., 17 273-83 (1921). https://doi.org/10.1103/PhysRev.17.273
  17. G. P. Martins, D. L. Olson, and G. R. Edwards, "Modeling of infiltration Kinetics for Liquid Metal Processing of Composites," Metall. Trans. B, 19 [1] 95-101 (1988). https://doi.org/10.1007/BF02666495

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