Journal
SURFACE & COATINGS TECHNOLOGY
Volume 275, Issue -, Pages 276-282Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2015.05.006
Keywords
Thermal barrier coatings; Suspension plasma spray; Bond coat; Isothermal exposure; Stress
Funding
- Thousand Youth Talents program
- program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institution of Higher Learning [SHDP201303]
Ask authors/readers for more resources
The performance of suspension plasma sprayed (SPS) yttria stabilized zirconia (YSZ) thermal barrier coatings (TBCs) after isothermal treatment at 1150 degrees C was investigated. The NiCoCrAlY bond coats were applied by air plasma spray (APS) and high velocity oxygen fuel (HVOF) techniques. It was found that the microstructure of SPS TBCs depends on the surface morphology of the bond coat. The SPS TBCs with a rough APS bond coat exhibited a longer lifetime than those with a smooth HVOF bond coat. To understand this phenomenon, the evolution of the microstructure, mechanical properties and the residual stresses in the TBCs and TGO were systematically studied. Results showed that the surface roughness and oxidation behavior of the bond coat play dominant roles in the SPS TBC failure. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available