Grain Size Effect in the Electrical Properties of Nanostructured Functional Oxides through Pressure Modification of the Spark Plasma Sintering Method

Abstract:

Through the use of a high-pressure modification of the spark plasma sintering method, it was possible to consolidate functional oxides (yttria- stabilized zirconia and doped ceria) to high densities and retain a grain size of < 20 nm. The role of the pressure on densification and on the grain size of the sintered samples was demonstrated. The pressure had a marked effect on density at relatively low temperature but an insignificant effect at relatively high temperature. It was found that when prepared with such small grain sizes, these oxides conduct protonically even at temperatures as low as room temperature. The dependence of the protonic conductivity is stronger dependence on grain size than what can be anticipated from a geometric consideration based on an increase in grain boundary area. This observation strongly suggests that factors other than an increase in grain boundary area play a role, a consideration that is being further investigated.

• Periodical: Key Engineering Materials (Volume 484)
• Pages: 107-116
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.484.107
• Online since: July 2011
• Authors: D.V. Quach, S. Kim, R.A. De Souza, Manfred Martin, Z.A. Munir
• Keywords: Doped Ceria, Nanometric Oxides, Protonic Conduction, Spark Plasma Sintering Method, YSZ

References

[1] L. Antoni: Materials Science Forum 461-464 (Pt. 2), 1073 (2004).

[2] E. Fabbri, D. Pergolisi and E. Traversa: Chem Soc. Rev., 39, 4355 (2010).

[3] M. Asamoto, H. Yamaura and H. Yahiro: J. Power Sources, 196, 1136-1140 (2011).

[4] H. Gleiter: Acta Mater., 48, 1 (2000).

[5] A. V. Chadwick and S. L. P. Savin: Solid State Ionics, 177, 3001 (2006).

[6] J. Maier: Solid State Ionics, 131, 13 ( 2000).

[7] S. Kim, U. Anselmi-Tamburini, H. J. Park, M. Martin and Z. A. Munir: Adv. Mater. 20, 556 (2008).

[8] M. C Martin and M. L. Mecartney: Solid State Ionics, 161, 67 (2003).

[9] D. D. Upadhyaya, A. Ghosh, K. R. Gurumurthy and R. Prasad: Ceram Int, 27, 415 (2001).

[10] X. J. Chen, K. A. Khor, S. H. Chan and L. G. Yu: Mater Sci Eng A 341, 43 (2003).

[11] H. J. Park and Y. H. Choa: Electrochem. Solid State Lett. 13, K49 (2010).

[12] K. Matsui, H. Yoshida and Y. Ikuhara: Acta Mater. 56, 1315 (2008).

[13] Z. A. Munir, U. Anselmi-Tamburini and M. Ohyanagi: J. Mater. Sci. 41, 763 (2006).

[14] Z. A. Munir, D. V. Quach and M. Ohyanagi: J. Am. Ceram. Soc. (2011), in press, doi: 10. 1111/j. 1551-2916. 2010. 04210. x.

[15] U. Anselmi-Tamburini, Z. A. Munir and J. E. Garay: U.S. Patent No. 7, 601, 403, October 13 (2009).

[16] R.M. German: Sintering Theory and Practice, p.170, Wiley, New York, NY, (1996).

[17] R.M. German: Rev. Particular Mater. 2, 117 (1994).

[18] J. Jamnik and R. Raj, J. Am. Ceram. Soc. 79, 193 (1996).

[19] R. J. Stokes and D. Evans, Fundamentals of Interfacial Engineering, pp.24-33, Wiley, New York, NY, (1996).

[20] G.Y. Onoda and J. Toner: J. Am. Ceram. Soc. 69, C278 (1986).

[21] M. A. C. G. Van de Graaf, J. H. H. Ter Maat and A. J. Burgraaf: J. Mater. Sci. 20, 1407 (1985).

[22] U. Anselmi-Tamburini, J.E. Garay and Z.A. Munir: Scripta Mater. 54, 823 (2006).

[23] D.V. Quach, H. Avila-Paredes, S. Kim, M. Martin and Z.A. Munir: Acta Mater. 58, 5022 (2010).

[24] A. Chokshi: Scripta Mater 48, 791 (2003).

[25] M. Okamotoa, Y. Akimune, K. Furuya, M. Hatano, M. Yamanaka and M. Uchiyama: Solid States Ionics 176, 675-680 (2005).

DOI: 10.1016/j.ssi.2004.10.022

[26] H. J. Avila-Paredes, J. Zhao, S. Wang, M. Pietrowski, R. A. De Souza, A. Reinholdt, Z. A. Munir, M. Martin and S. Kim: J. Mater. Chem., 20, 990 (2010).

DOI: 10.1039/b919100c

[27] H.J. Avila-Paredes, C.T. Chen, S. Wang, R. A. De Souza, M. Martin, Z. A. Munir and S. Kim, J. Mater. Chem. 20, 10110 (2010).