Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Transient Liquid Phase Sintering of LCCC(La0.8Ca0.2Cr0.9Co0.1O3-δ) with the Addition of CaCrO4

CaCrO4 첨가에 따른 LCCC(La0.8Ca0.2Cr0.9Co0.1O3-δ)의 전이액상소결거동

  • Lee, Ho-Chang (School of Materials Science and Engineering, Kyungpook National University) ;
  • Kang, Bo-Kyung (School of Materials Science and Engineering, Kyungpook National University) ;
  • Lee, Joon-Hyung (School of Materials Science and Engineering, Kyungpook National University) ;
  • Heo, Young-Woo (School of Materials Science and Engineering, Kyungpook National University) ;
  • Kim, Jae-Yuk (Ssangyong Materials Corp.) ;
  • Kim, Jeong-Joo (School of Materials Science and Engineering, Kyungpook National University)
  • Received : 2012.02.20
  • Accepted : 2012.03.15
  • Published : 2012.03.31
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Abstract

In this study, in order to improve densification of $La_{0.8}Ca_{0.2}Cr_{0.9}Co_{0.1}O_{3-\delta}$ (LCCC), which is known for one of the most proper candidate interconnector materials in the solid oxide fuel cells, $CaCrO_4$ was prepared via solid oxide synthesis route and added to the LCCC with different amount and particle sizes. As the amount of the $CaCrO_4$ increased, porosity of the sintered samples increased, and the pore size was proportional to the particle size of the $CaCrO_4$. This supports the fact that the $CaCrO_4$ phase forms liquid during sintering and permeate into the matrix leaving behind large pores. Then the liquid reacts with the matrix through the solid solution. However, when the samples were sintered with a slow ramp up rates, the porosity decreased. This is thought to be caused by the progressive solid solution of $CaCrO_4$ before the temperature reach to the melting temperature and forms a fluent amount of liquids. The sintering behavior of the LCCC with the addition of $CaCrO_4$ was analyzed through the transient liquid phase sintering on the basis of the microstructure observation and phase identification by x-ray diffraction.

Keywords

References

  1. S. P. Jiang and S. H. Chan, "A Review of Anode Materials Development in Solid Oxide Fuel Cell," J. Mater. Sci., 394405-39 (2004).
  2. W. Z. Zhu and S. C. Deevi, "A Review on the Status of Anode Materials for Solid Oxide Fuel Cells," Mater. Sci.Eng. A, 362 228-39 (2003). https://doi.org/10.1016/S0921-5093(03)00620-8
  3. K. C. Wincewicz and J. S. Cooper, "Axonomies of SOFC Material and Manufacturing Alternatives," J. Power Sources, 140 280-96 (2005). https://doi.org/10.1016/j.jpowsour.2004.08.032
  4. W. Z. Zhu and S.C. Deevi, "Evelopment of Interconnect Materials for Solid Oxide Fuel Cells," Mater. Sci. Eng. A, 348 227-43 (2003). https://doi.org/10.1016/S0921-5093(02)00736-0
  5. J. G. M. Furtado and R.N. Oliveira, "Evelopement of Lathanum Chromites-based Materials for Solid Oxide Fuel Cell Interconnects," Revista Materia, 13 147-53 (2008). https://doi.org/10.1590/S1517-70762008000100018
  6. N. Sakai, T. Kawada, H. Yokokawa, and M. Dokiya, "Sinterability and Electrical Conductivity of Calcium-Doped Lanthanum Chromites," J. Mater. Sci., 25 4531-34 (1990). https://doi.org/10.1007/BF00581119
  7. N. Q. Minh, "Ceramic Fuel Cells," J. Am. Ceram. Soc., 76 563-88 (1993). https://doi.org/10.1111/j.1151-2916.1993.tb03645.x
  8. J. Wang, C. B. Ponton, and P. M. Marquis, "Sintering and Microstructrural Development of $La_{0.8}Ca_{0.22}CrO_3$," J. Mater. Sci. Lett., 15, 658-661 (1996). https://doi.org/10.1007/BF00264104
  9. F. Boroomand, E. Wessel, H. Bausinger, and K. Hilpert, "Correlation between Defect Chemistry and Expansion during Reduction of Doped $LaCrO_3$ Interconnects for SOFCS," Solid State Ionics., 129 251-58 (2000). https://doi.org/10.1016/S0167-2738(99)00330-6
  10. A. Zuev, L. Singheiser, and K. Hilpert, "Defect Structure and Isothermal Expansion of A-site and B-site Substituted Lanthanum Chromite," Solid State Ionics, 147 1-11 (2002). https://doi.org/10.1016/S0167-2738(02)00010-3
  11. D. B. Meadowcro, and J. M. Wimmer, "Oxidation and Vaporization Processes in Lanthanum Chromite," Am. Ceram. Soc. Bull., 58 [6] 610-15 (1979).
  12. P. S. Devi and M. S. Fao, "Preparation, Structure, and Properties of Strontium-Doped Lanthanum Chromites : $La_{1-x}Sr_xCrO_3$," J. Solid State Chemistry, 98 237-44 (1992). https://doi.org/10.1016/S0022-4596(05)80231-2
  13. X. Ding, Y. Liu, L. Gao, and L. Guo, "Effects of Cation Substitution on Thermal Expansion and Electrical Properties of Lanthanum Chromites," J. Alloys Comps., 425 318-22 (2006). https://doi.org/10.1016/j.jallcom.2006.01.030
  14. X. Zhou, J. Ma, F. Deng, G. Meng, and X. Liu, "Preparation and Properties of Ceramic Interconnecting Materials, $La_{0.7}Ca_{0.3}CrO_{3-a}$ Doped with GDC for $IT-SOFC_S$," J. Power Sources, 162 279-85 (2006). https://doi.org/10.1016/j.jpowsour.2006.06.091
  15. X. L. Zhou, J. J. Ma, F. J. Deng, G. Y. Meng, and X. Q. Liu, "A High Performance Interconnecting Ceramics for Solid Oxide Fuel Cells(SOFCs)," Solid State Ionics, 177 3461-66 (2007). https://doi.org/10.1016/j.ssi.2006.10.007
  16. M. Mori, Y. Hiei, and N. M. Sammes, "Sintering behavior of Ca- or Sr-doped Perovskites Including Second Phase of (AE = Sr, Ca) in Air," Solid State Ionics, 135 743-48 (2000) https://doi.org/10.1016/S0167-2738(00)00372-6
  17. M. Mori and N.M. Sammes, "Sintering and Thermal Expansion Characterization of Al-doped and Co-doped Lanthanum Strontium Chromites Synthesis by the Pechini Method," Solid state Ionics, 146 301-12 (2002). https://doi.org/10.1016/S0167-2738(01)01020-7
  18. K. Deshpande, A. Mukasyan, and A. Varma, "Aqueous combustion Synthesis of Strontium-doped Lanthanum Chromite Ceramics," J. Am. Ceram. Soc., 86 [7] 1149-54 (2003). https://doi.org/10.1111/j.1151-2916.2003.tb03439.x
  19. J. Ovenstone, K.C. Chan, and C.B. Ponton, "Hydrothermal Processing and Characterization of Doped Lanthanum Chromite for Use in SOFCs," J. Mater. Sci., 37 3315-22(2002). https://doi.org/10.1023/A:1016151521180
  20. S.-T. Park, B.-H. Choi, M.-J. Ji, Y.-T. An, and H.-J. Choi, "Effects of Ca-Source on the Sintering and Electrical Properties of $La_{0.7}Ca_{0.3}Cr_{0.9}Co_{0.1}O_{3-{\delta}}$ for Solid Oxide Fuel Cell Interconnects," J. Kor. Ceram. Soc., 48 [3] 205-62 (2011) https://doi.org/10.4191/KCERS.2011.48.3.205
  21. R. Koc and H.U. Anderson, "Liquid Phase Sintering of Lanthanum Chromite," J. Eur. Ceram. Soc., 9 285-92 (1992) https://doi.org/10.1016/0955-2219(92)90063-J
  22. Y.-S. Youu, J.-J. Kim, and D.-Y. Kim., "Effect of Heating Rate on the Microstructural Evolution During Sintering of $BaTiO_3$ Ceramics," J. Am. Ceram. Soc., 70 [11] C-322-C-324 (1987)
  23. G. M. Christie, P. H. Middleton, and B. C. H. Steele. "Liquid Phase Sintering, Electical Conductivity, and Chemical Stability of Lanthanum Chromite Doped with Calcium and Nickel," J. Eur. Ceram. Soc., 14 163-75 (1994) https://doi.org/10.1016/0955-2219(94)90104-X

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  1. (LCCC) Ceramics for SOFC Interconnects vol.25, pp.5, 2012, https://doi.org/10.4313/JKEM.2012.25.5.392