Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1657070 | Surface and Coatings Technology | 2015 | 9 Pages |
Abstract
In this study, the surface topography of bond coats within a TBC system were modified by the combination of polishing and surface grit blasting. Yttria stabilized zirconia coatings were deposited using an axial feed suspension plasma spray gun. The surface topography of the resultant coatings was characterized using striped light projection. Samples were tested for thermo-cyclic fatigue lifetime at 1100 °C during 1 hour cycles. Thermal shock performance was evaluated using the burner rig test and thermal conductivity evaluated using the laser flash analysis. The results indicate that columnar SPS coating microstructure is strongly influenced by surface topography. Test results suggest that control of surface topography may be an important factor to improve the performance of SPS coatings.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Nicholas Curry, Zhaolin Tang, Nicolaie Markocsan, Per Nylén,