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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
 
Creator AJAY, A
RAJA, VS
SIVAKUMAR, G
JOSHI, SV
 
Subject STABILIZED ZIRCONIA COATINGS
SULFATE-VANADATE SALT
VERTICAL CRACKS
BASE SUPERALLOY
YTTRIA
DEGRADATION
MICROSTRUCTURES
DEPOSITION
RESISTANCE
SPALLATION
Hot corrosion
Ceramic
SEM
XRD
Superalloys
 
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.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2016-01-14T13:31:50Z
2016-01-14T13:31:50Z
2015
 
Type Article
 
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
 
Language en