Commercial thermal barrier coatings with a double-layer bond coat on turbine vanes and the process repeatability
2009; Elsevier BV; Volume: 203; Issue: 16 Linguagem: Inglês
10.1016/j.surfcoat.2009.02.007
ISSN1879-3347
Autores Tópico(s)Catalytic Processes in Materials Science
ResumoAn investigation was conducted to develop a commercial thermal barrier coating (TBC) system with a double-layer bond coat on Ni-base superalloy turbine vanes. Surface morphology and cross-section microstructure of the developed coatings were studied by using Optical Microscope and Scanning Electron Microscope (SEM). Experimental and production results showed that a TBC system with good adherence and a repeatable process to apply the coatings were obtained. Furthermore, the repeatability of the vapor phase coating process, high velocity oxy-fuel (HVOF), and air plasma spray (APS) process were discussed. Finally, the advantage and the future possible improvement of the investigated TBC system were also proposed.
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