Studies on Al₂O₃ - ZrO₂ Coatings Structure before and after Thermal Treatment

Abstract:

Phase transitions occurring in the Al2O3-ZrO2 composite as a result of plasma spraying and subsequent coating annealing are described. X-ray diffraction and transmission electron microscopy methods are applied to study these effects. Separate layers of amorphous, nano- and fine-crystalline structure with the columnar crystals areas have been observed. Thermal treatment causes formation of more ordered phases. Effect of partial stabilization of cubic and tetragonal zirconia due to the presence of alumina has been remarked.

• Periodical: Solid State Phenomena (Volume 130)
• Pages: 297-301
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.130.297
• Online since: December 2007
• Authors: Ludwik Górski, Andrzej Pawłowski
• Keywords: Phase Transition, Plasma Spraying, Thermal Barrier Coating (TBC)

References

[1] S. Stecura, Am. Cer. Soc. Bull., Vol. 56, (1977), p.1082.

[2] S. Strangman, Thin Solid Films, Vol. 127, (1985), p.93.

[3] R.J. Brandon, R. Taylor, Surf. Coat. Technology, Vol. 50 (1992), p.141.

[4] L. Górski, Acta Phys. Polon., Vol. 96, (1999), p.275.

[5] L. Górski, Report of the IAE 47/A/(1999).

[6] T. Chraska, A.H. King, Mat. Sci. Forum, Vol. 294 - 296, (1999), p.779.

[7] L. Górski, A. Pawłowski, Acta Phys. Polon., Vol. 102, (2002), p.295.

[8] A. Pawłowski, T. Czeppe, L. Górski, W. Baliga, Arch. of Metallurgy and Materials, Vol. 50, (2005), p.719.

[9] A.M. Limarga, S. Widjaja, T.H. Yip, Mater. Let., Vol. 57, (2002), p.628.

[10] X. Miao, B. Ben - Nissan, J. Mater. Sci., Vol. 35, (2000), p.497.