Skip to main content
SpringerLink
Log in

Improvements in oxidation resistance and conductivity of Fe-Cr metallic interconnector by (La0.8Ca0.2)(Cr0.9Co0.1)O3 coating

  • Published:
Metals and Materials International Aims and scope Submit manuscript

Abstract

In this study, the effect of perovskite (Ca,Co)-doped LaCrO3 (LCCC) coating on a commercial ferritic stainless steel (SS430) as metallic interconnector in intermediate-temperature solid oxide fuel cell has been investigated in terms of oxidation kinetics and area specific resistance (ASR) at 800 °C in air environment. The LCCC coating was deposited on SS430 by atmospheric plasma spraying from a spray-dried (La0.8Ca0.2)(Cr0.9Co0.1)O3 powder of 10–30 um. The plasma-sprayed LCCC coating had a low porosity of ∼1.0 area% and a good electrical conductivity of 33 S/cm at 800 °C. The protective LCCC coating significantly lowered the growth rate of thermally grown oxide scale of SS430 by inhibiting oxygen inward diffusion. The oxidation of the LCCC coated SS430 for 1200 h led to the formation of duplex Cr2O3-LaCrO3 scale layer of ∼1 um in thickness. A high conductive LaCrO3 phase in the oxide scale was formed by the chemical interactions between the Cr2O3 scale and the LCCC coating. The ASR for the LCCC coated sample was limited to 9.2 mΩ·cm2 after oxidation for 1200 h at 800 °C, which was much lower than ASR for the uncoated sample.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. W. Z. Zhu and S. C. Deevi, Mater. Sci. Eng. A 348, 227 (2003).

    Article  Google Scholar 

  2. N. Shaigan, W. Qu, D. G. Ivey and W. Chen, J. Power Sources 195, 1529 (2010).

    Article  Google Scholar 

  3. J. W. Fergus, Mater. Sci. Eng. A 397, 271 (2005).

    Article  Google Scholar 

  4. W. J. Quadakkers, J. Piron-Abellan, V. Shemet and L. Singheiser, Mater. High Temp. 20, 115 (2003).

    Google Scholar 

  5. S. J. Geng, J. H. Zhu and Z. G. Lu, Scripta Mater. 55, 239 (2006).

    Article  Google Scholar 

  6. Z. G. Yang, J. S. Hardy, M. S. Walker, G. Xia, S. P. Simner and J. W. Stevenson, J. Electrochem. Soc. 151, A1825 (2004).

    Article  Google Scholar 

  7. W. Qu, L. Jian, J. M. Hill and D. G. Ivey, J. Power Sources 153, 114 (2006).

    Article  Google Scholar 

  8. S. H. Song, Z. X. Yuan and P. Xiao, J. Mater. Sci. Lett. 22, 755 (2003).

    Article  Google Scholar 

  9. C. Chu, J. Wang and S. Lee, Int. J. Hydrogen Energy 33, 2536 (2008).

    Article  Google Scholar 

  10. Z. Yang, G. Xia, X. H. Li and J. W. Stevenson, Int. J. Hydrogen Energy 32, 3648 (2007).

    Article  Google Scholar 

  11. G. V. Pattarkine, N. Dasgupta and A. V. Virtar, J. Electrochem. Soc. 155, B1036 (2008).

    Article  Google Scholar 

  12. J. Puranen, J. Lagerbom, L. Hyvarinen, T. Mantyla, E. Levanen, M. Kylmalahti and P. Vuoristo, Surf. Coat. Technol. 205, 1029 (2010).

    Article  Google Scholar 

  13. D. P. Lim, D. S. Lim, J. S. Oh and I. W. Lyo, Surf. Coat. Technol. 200, 1248 (2005).

    Article  Google Scholar 

  14. S. Park, S. Kumar, H. Na and C. Lee, J. Therm. Spray Tech. 17, 708 (2008).

    Article  Google Scholar 

  15. H. Y. Lee and K. H. Baik, Met. Mater. Int. 15, 783 (2009).

    Article  Google Scholar 

  16. C. Li, C. Li and M. Wang, Surf. Coat. Technol. 198, 278 (2005).

    Article  Google Scholar 

  17. K. H. Baik, J. Electrochem. Soc. 160, F560 (2013).

    Article  Google Scholar 

  18. M. Gao, C. Li, C. Li, G. Yang and S. Fan, J. Power Sources 191, 275 (2009).

    Article  Google Scholar 

  19. C. Zhang, W. Li, H. Liao, C. Li, C. Li and C. Coddet, J. Therm. Spray Tech. 16, 1005 (2007).

    Article  Google Scholar 

  20. W. J. Quadakkers, D. Naumenko, E. Wessel, V. Kochubey and L. Singheiser, Oxid. Met. 61, 17 (2004).

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Nanomaterials Engineering, Chungnam National University, 99 Daehag-ro, Yuseong, Daejeon, 305-764, Korea

    Chang-Hyun Park & Kyeong-Ho Baik

Authors
  1. Chang-Hyun Park
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Kyeong-Ho Baik
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Kyeong-Ho Baik.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Park, CH., Baik, KH. Improvements in oxidation resistance and conductivity of Fe-Cr metallic interconnector by (La0.8Ca0.2)(Cr0.9Co0.1)O3 coating. Met. Mater. Int. 20, 63–67 (2014). https://doi.org/10.1007/s12540-014-1005-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12540-014-1005-1

Key words

Search

Navigation