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ABSTRACT
ISSN: 0975-4024
| Title |
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Dilapidation of the TBC system during the Burner Rig Test |
| Authors |
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S Sreenivas, U Chandrasekhar, K Hemachandra Reddy, K Elangovan, B R Sridhar |
| Keywords |
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Inconel, APS Technique, High temperature oxidation, Thermally grown oxide (TGO), YSZ |
| Issue Date |
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Jun-Jul 2015 |
| Abstract |
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Substrate of Inconel 718 was deposited with a bond coat of nickel cobalt chromium aluminium yttriym (NiCoCrAlY). A top coat of thermal barrier coating of 8% Yttria stabilised zirconia (YSZ) was sprayed over the bond coat by an air plasma spray (APS) technique by employing standard process parameters. Static oxidation test conducted at 1000 0C and for 120 hours (h) revealed that main degradation modes of the TBC system were connected with formation of porous NiAl2O4 oxides in the thermally grown oxide area followed by formation of micro-cracks, delamination of ceramic layer and spallation of ceramic top-coat. |
| Page(s) |
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868-875 |
| ISSN |
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0975-4024 |
| Source |
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Vol. 7, No.3 |
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