Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Sample Preparation for Microstructural Characterization of Ni-Yttria-Stabilized Zirconia Anodes

  • Sim, Soo-Man (Department of Materials Engineering, Hongik University)
  • Received : 2018.04.30
  • Accepted : 2018.06.25
  • Published : 2018.07.31
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Abstract

Microstructural characterization of Ni-yttria-stabilized zirconia (YSZ) anodes using secondary electron images has been limited by a lack of contrast between Ni and YSZ phases. This paper reports a sample preparation method for obtaining secondary electron images that allow the detection of Ni, YSZ, and pore phases together. Ni-YSZ anode samples were obtained by reducing NiO-YSZ samples prepared by using the mixed oxide method. Colloidal silica polishing and electrolytic etching were performed on the Ni-YSZ samples. The morphological change of the sample surface after each polishing process is examined.

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References

  1. T. Iwata, "Characterization of Ni-YSZ Anode Degradation for Substrate-Type Solid State Fuel Cells," J. Electrochem. Soc., 143 [5] 1521-25 (1990). https://doi.org/10.1149/1.1836673
  2. D. Simwonis, F. Tietz, and D. Stover, "Nickel Coarsening in Annealed Ni/8YSZ Anode Substrates for Solid Oxide Fuel Cells," Solid State Ionics, 132 [3-4] 241-51 (2000). https://doi.org/10.1016/S0167-2738(00)00650-0
  3. J.-H. Lee, H. Moon, H.-W. Lee, J. Kim, J.-D. Kim, and K.-H. Yoon, "Quantitative Analysis of Microstructure and Its Related Electrical Property of SOFC Anode, Ni-YSZ Cermet," Solid State Ionics, 148 [1-2] 15-26 (2002). https://doi.org/10.1016/S0167-2738(02)00050-4
  4. J.-H. Lee, J.-W. Heo, D.-S. Lee, J. Kim, G.-H. Kim, H.-W. Lee, H. S. Song, and J.-H. Moon, "The Impact of Anode Microstructure on the Power Generating Characteristics of SOFC," Solid State Ionics, 158 [3-4] 225-32 (2003). https://doi.org/10.1016/S0167-2738(02)00915-3
  5. R. M. C. Clemmer and S. F. Corbin, "Influence of Porous Composite Microstructure on the Processing and Property of Solid Oxide Fuel Cell anode," Solid State Ionics, 166 [3-4] 251-59 (2004). https://doi.org/10.1016/j.ssi.2003.12.009
  6. T. Fukui, K. Murata, S. Ohara, H. Abe, M. Naito, and K. Nogi, "Morphology Control of Ni-YSZ Cermet Anode for Lower Temperature Operation of SOFCs," J. Power Sources, 125 [1] 17-8 (2004). https://doi.org/10.1016/S0378-7753(03)00817-6
  7. M. Marinsek, S. Pejovnik, and J. Macek, "Modelling of Electrical Properties of Ni-YSZ Composites," J. Eur. Ceram. Soc., 27 [2-3] 959-64 (2007). https://doi.org/10.1016/j.jeurceramsoc.2006.04.165
  8. K.-R. Lee, S. H. Choi, J. Kim, H.-W. Lee, and J.-H. Lee, "Viable Image Analyzing Method to Characterize the Microstructure and the Properties of the Ni-YSZ Cermet Anode of SOFC," J. Power Sources, 140 [2] 226-34 (2005). https://doi.org/10.1016/j.jpowsour.2004.06.031
  9. K. Thyden, Y. L. Liu, and J. B. Bilde-Sorensen, "Microstructural Characterization of SOFC Ni-YSZ Anode Composites by Low-Voltage Scanning Electron Microscopy," Solid State Ionics, 178 [39-40] 1984-89 (2008). https://doi.org/10.1016/j.ssi.2007.12.075
  10. G. F. Vander Voort, Metallography, Principles, and Practice; pp. 177-78, ASM International, Materials Park, Ohio, 2004.
  11. I. J. McColm, Ceramic Hardness; pp. 235-79, Plenum Press, New York, 1990.
  12. K. Higashi, K. Sonoda, H. Ono, S. Sameshima, and Y. Horata, "Synthesis and Sintering of Rare-Earth-Doped Ceria Powder by Oxalate Coprecipitation Method," J. Mater. Res., 14 [3] 957-67 (1999). https://doi.org/10.1557/JMR.1999.0127