Study on Properties of Plasma Sprayed CoCrAlYCoating on TiAl Alloy Surface


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The CoNiCrAlY thermal barrier coating was prepared on the surface of TiAl alloy by plasma spraying technique. SEM observation shows that the bonding between thermal barrier coating and substrate is good. The surface hardness of TiAl alloy is improved, the microhardness of the coating surface is about 673HV after the oxidation test at 850°C. The oxidation tests at 850°C show that the oxidation resistance of the samples is improved remarkably. The surface morphology and microstructure of the thermal barrier coating are determined by SEM.



Key Engineering Materials (Volumes 353-358)

Edited by:

Yu Zhou, Shan-Tung Tu and Xishan Xie




H. Zhou et al., "Study on Properties of Plasma Sprayed CoCrAlYCoating on TiAl Alloy Surface", Key Engineering Materials, Vols. 353-358, pp. 1737-1740, 2007

Online since:

September 2007




[1] Cheng Z. Y., Cheng Z. C., Li J. S.: Metal Heat Treatment Vol. 18(11) (2003), p.5.

[2] Zhou H., Chen F., Yao B.: Transactions of Materials and Heat Treatment Vol. 25(2) (2004), p.35.

[3] Zhang Y. J., Sun X. F., Guan H. R.: The Chinese Journal of Nonferrous Metals Vol. 12(6) (2002), p.1099.

[4] Evans A. G., Hutchison J W: Int. J Solids Structures Vol. 74(2) (1993), p.1321.

[5] Luthra K. L., Briant C. L.: Oxid. Met. Vol. 26 (1986), p.397.

[6] Jiang C., Zhou J. L., Xiao Y. F.: Rare Metal Materials and Engineering Vol. 32(7) (2003), p.554.