Consolidation of TiAl Powder by Thermal Spray Processes


Article Preview

Thermal spray deposition has been widely used as a coating process for applying thin protective layers to the need-to-protect materials, or substrates. Recent technological developments in thermal spray processing, particularly cold gas spraying (CGS) and supersonic plasma spraying (S-PS), have enabled some emerging applications for making structural components. This paper reports on the results of our recent attempts to obtain thick TiAl coatings using three coating techniques: atmospheric plasma spraying (APS), S-PS and CGS. We successfully achieved a 3 mm thick coating using both APS and S-PS techniques, but failed in cold spray. A significant phase change was observed of the powder particles experienced during both APS and S-PS processes. Nevertheless, a considerable quantity of titanium oxides was observed in the APS coating.



Advanced Materials Research (Volumes 29-30)

Edited by:

Deliang Zhang, Kim Pickering, Brian Gabbitas, Peng Cao, Alan Langdon, Rob Torrens and Johan Verbeek




P. Cao et al., "Consolidation of TiAl Powder by Thermal Spray Processes", Advanced Materials Research, Vols. 29-30, pp. 159-162, 2007

Online since:

November 2007




[1] F. Appel and R. Wagner: Mater. Sci. Eng. R22 (1998), p.187.

[2] R. Gerling, H. Clemens and F.P. Schimansky: Adv. Eng. Mater. 6 (2004), p.23.

[3] L. Pawlowski: The Science and Engineering of Thermal Spray Coatings (Wiley, New York, 1995). p.94.

[4] V.L. Tellkamp, M.L. Lau, A. Fabel and E.J. Lavernia: Nanostr. Mater. 9 (1997), p.489.

[5] J.H. He, M. Ice, S. Dallek and E.J. Lavernia: Metall. Mater. Trans. 31A (2000), p.541.

[6] T. Grosdidier, A. Tidu and H.L. Liao: Scripta Mater. 44 (2001), p.387.

[7] R.R. Holmes, D.H. Burns and T.N. Mckechnie: in Proc. 3 rd national thermal spray conference, Long Beach, CA; 1990, p.363.

[8] T.S. Hussey, M.J. Koczak, R.W. Smith and S.R. Kalidindi: Mater. Sci. Eng. A229 (1997), p.137.

[9] G. Ji, T. Grosdidier, H.L. Liao, J.P. Morniroli and C. Codder: Intermetallics 13 (2005), p.596.

[10] F. Zhang, S.L. Chen. Y.A. Chang and U.R. Kattner: Intermetallics 5 (1997), p.471.

[11] A.E. Segall, A.N. Papyrin, J.C. Conway and D. Shapiro: JOM 1998 (9), p.52.

[12] F. Frank, T. Schmidt, T. Stoltenhoff and H. Kreye: Adv. Eng. Mater. 8 (2006), p.611.

[13] H.Y. Lee, S.H. Jung, S.Y. Lee and K.H. Ko: Mater. Sci. Eng. A433 (2006), p.139.

[14] T. Novoselova, S. Celotto, R. Morgan, P. Fox and W. O'Neill: J. Alloys Comp. 436 (2007), p.69.