Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11007796 | Corrosion Science | 2018 | 72 Pages |
Abstract
In this research, the effects of thin Al2O3 diffusion barrier layer (including Y-containing small oxide precipitates) and nanostructured YSZ top coat on the high temperature oxidation behavior of HVOF NiCoCrAlTaY/APS YSZ coatings were examined by using isothermal oxidation tests at 1100â°C. Nanostructured YSZ top coat could slightly reduce the double layered TGO growth rate and weight gain of thermal barrier coating systems. However, Al2O3 diffusion barrier layer (consisting of Y-containing small oxide precipitates) could substantially decline the oxidation rate and Ta movement (Ta-enriched oxides formation) in the NiCoCrAlTaY/Al2O3/nanostructured YSZ coating at 1100â°C.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Mohammadreza Daroonparvar, Muhamad Azizi Mat Yajid, Charls M. Kay, Hamidreza Bakhsheshi-Rad, Rajeev Kumar Gupta, Noordin Mohd Yusof, Hamidreza Ghandvar, Azrina Arshad, Intan Syaqirah Mohd Zulkifli,