Characterization of Detonation Sprayed Thermal Barrier Coatings

J Mater Sci Technol ›› 2004, Vol. 20 ›› Issue (Supl.): 85-88.

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Characterization of Detonation Sprayed Thermal Barrier Coatings

Fuhe YUAN, Zhiwei HUANG,Zhongguang WANG, Chao SUN, Shijie ZHU

Shenyang National Laboratory for Materials Science, Institute of Metal Research, CAS, Shenyang,China...

Received:1900-01-01 Revised:1900-01-01 Online:2004-12-28 Published:2009-10-10
Contact: Shijie ZHU

Abstract

Abstract: Detonation spraying has advantages of strong bonding without heating substrates, high coating speed, low requirements for the quality of surface treatment of substrates and others. In the present research, yttria stabilized zirconia powders were used for detonation spraying thermal barrier coatings (TBCs) on a Ni-base superalloy with a bond coat of NiCrAlY. Thermal exposure tests were conducted at a constant temperature in air. After thermal exposure, microstructure observation, element distribution analysis and hardness measurement were carried out. The cracking behavior of the as-prepared and preoxidized TBCs specimens was investigated.

Key words: Detonation spraying, Thermal barrier coating, Oxidation, Interfacial adhesion

Fuhe YUAN, Zhiwei HUANG, Zhongguang WANG, Chao SUN, Shijie ZHU. Characterization of Detonation Sprayed Thermal Barrier Coatings[J]. J Mater Sci Technol, 2004, 20(Supl.): 85-88.

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Characterization of Detonation Sprayed Thermal Barrier Coatings

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