Properties of Multi-Function Micro-Plasma Sprayed Nanostructured Al2O3-13wt%TiO2 Coatings


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Nonastructured Al2O3-13wt%TiO2 (AT13) coatings were deposited by multi-function micro-plasma spray and Metco 9M plasma spray, respectively. Constituent phases and the microstructure of the powder particles and coatings prepared were examined with the aid of scanning electronic microscope (SEM) and X-ray diffraction (XRD). Mechanical properties including hardness and bonding strength were also evaluated by microhardness tester and electron tensile tester. Multi-function micro plasma sprayed nanostructured AT13 Coating is fully-melted, dense and uniform. However, AT13 Coating deposited by Metco 9M plasma spray is partial-melted. The microhardness of multi-functional micro plasma sprayed AT13 Coating is HV975.7~1441.7, much higher than that of Metco 9M plasma sprayed AT13 Coating (HV655.3~946.6). The bonding strength results present the same, increased from 19.8 MPa to 42.7 MPa.



Key Engineering Materials (Volumes 373-374)

Main Theme:

Edited by:

M.K. Lei, X.P. Zhu, K.W. Xu and B.S. Xu




L. Y. Wang et al., "Properties of Multi-Function Micro-Plasma Sprayed Nanostructured Al2O3-13wt%TiO2 Coatings", Key Engineering Materials, Vols. 373-374, pp. 59-63, 2008

Online since:

March 2008




[1] Dai Tahuang, Zhou Kesong et al. Modern material surface technique science. Beijing: National defense Industry Press,2004, p.163.

[2] T. Danny Xiao, You Wang and Stephen Jiang, Proceeding of the second international conference on surface engineering (1999), p.119.

[3] Daniel George Goberman. University of Connecticut(2002).

[4] Liuying Wang, Hangong Wang, Shaochun Hua and Xiaoping Cao. Transactions of The China Welding Institution. Vol. 27(2006), p.81.

[5] Liuying Wang, Hangong Wang, Shaochun Hua and Xiaoping Cao. Plasma science and technology. Vol. 9(2007),p.52.


[6] Zhijun Yan, Dalian Maritime University(2003).

[7] Jining He,Dianran Yan and Yanchun Dong. Heat treatment of metals. Vol. 30(2005), p.46.