Development of Nanostructured Al2O3-Ni HVOF Coatings


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HVOF thermal spraying has been developed to deposit dense Al2O3-coatings for improved protective properties. As compared to generally used plasma sprayed coatings HVOF coatings can be prepared much denser and thus are better suited for applications where protective properties of the coating are needed. In this paper we describe the development of HVOF spraying technologies for nanocrystalline Al2O3- and Al2O3-Ni-coatings. The microstructure and the mechanical properties of these novel coatings are reported and compared to a conventionally processed Al2O3-coating.



Key Engineering Materials (Volumes 317-318)

Edited by:

T. Ohji, T. Sekino and K. Niihara




S. P. Hannula et al., "Development of Nanostructured Al2O3-Ni HVOF Coatings", Key Engineering Materials, Vols. 317-318, pp. 539-544, 2006

Online since:

August 2006




[1] S. -P. Hannula, J. Koskinen, E. Haimi, and R. Nowak: Encyclopedia of Nanoscience and Nanotechnology, vol. 5, H.S. Nalwa, Ed, American Scientific Publishers, USA, 2004, p.131.

[2] S. -T. Oh, J. -S. Lee, T. Sekino and K. Niihara: Scripta Materialia, 44 (2001) p.2117.

[3] B. S. Kim, J. S. Lee, T. Sekino, Y. H. Choa and K. Niihara: Scripta Materialia, 44 (2001) p.2121.

[4] S. -T. Oh, M. Sando and K. Niihara:. Scripta Materialia, 39 (1998) p.1413.

[5] J. Lu, L. Gao, J. Guo and K. Niihara: Materials Research Bulletin, 35 (2000) p.2387.

[6] M. Gell, E. H. Jordan, Y. H. Sohn, D. Goberman, L. Shaw and T. D. Xiao: Surface and Coatings Technology, 146-147 (2001) p.48.


[7] E. H. Jordan, M. Gell, Y. H. Sohn, D. Goberman, L. Shaw, S. Jiang, M. Wang, T. D. Xiao, Y. Wang and P. Strutt: Mater. Sci. Eng., 301 (March 2001) p.80.

[8] D. Goberman, Y. H. Sohn, L. Shaw, E. Jordan and M. Gell: Acta Materialia, 50, (2002) p.1141.

[9] E. Rajamäki, T. Varis, K. Ruusuvuori, T.E. Gustafsson, S. -P. Hannula, M. Gasik and E. Antila, Proceedings of the International Thermal Spray Conference, ITSC 2003. Orlando, Florida, 5-8 May, 2003. (2003) p.1531.

[10] S. Ranganath, J. Mater. Sci. 32 (1997) 1.

[11] E. Turunen, T. Varis, T.E. Gustafsson, J. Keskinen, P. Lintunen, T. Fält, R. Nowak, S-P. Hannula: submitted to be published, (EnCera 2004).

[12] J.S. Field and M.V. Swain: J. Mater. Res., 8 (1993) p.297.

[13] J.S. Field and M.V. Swain, J. Mater. Res., 10 (1995) p.101.

[14] A. Kulkarni, J. Gutleber, S. Sampath, A. Goland, W.B. Lindquist, H. Herman, A.J. Allen, B. Dowd: Materials Science and Engineering A369 (2004) 124-137.