Hot corrosion behavior of solution precursor and atmospheric plasma sprayed thermal barrier coatings
DSpace at IIT Bombay
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Title |
Hot corrosion behavior of solution precursor and atmospheric plasma sprayed thermal barrier coatings
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Creator |
AJAY, A
RAJA, VS SIVAKUMAR, G JOSHI, SV |
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Subject |
STABILIZED ZIRCONIA COATINGS
SULFATE-VANADATE SALT VERTICAL CRACKS BASE SUPERALLOY YTTRIA DEGRADATION MICROSTRUCTURES DEPOSITION RESISTANCE SPALLATION Hot corrosion Ceramic SEM XRD Superalloys |
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Description |
Hot corrosion behavior of solution precursor plasma spray (SPPS) thermal barrier coating (TBC) in molten salt mixtures of 90 wt.% Na2SO4 + 5 wt.% V2O5 + 5 wt.% NaCl and 50 wt.% Na2SO4 + 50 wt.% V2O5 at 900 degrees C is compared vis-a-vis atmospheric plasma spray (APS) coating. APS TBCs show better hot corrosion resistance than SPPS TBCs in both the salt mixtures. The vertical cracks in SPPS coatings, meant for strain tolerance and high thermal cycling life, serve as channels for transporting salts across the coating to bond coat/top coat interface and accelerate failure. (C) 2015 Elsevier Ltd. All rights reserved.
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Publisher |
PERGAMON-ELSEVIER SCIENCE LTD
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Date |
2016-01-14T13:31:50Z
2016-01-14T13:31:50Z 2015 |
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Type |
Article
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Identifier |
CORROSION SCIENCE, 98,271-279
0010-938X 1879-0496 http://dx.doi.org/10.1016/j.corsci.2015.05.034 http://dspace.library.iitb.ac.in/jspui/handle/100/17622 |
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Language |
en
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