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Comparison of the hot corrosion of nanostructured and microstructured thermal barrier coatings
Author(s) -
Zhou C. H.,
Zhang Z. Y.,
Zhang Q. M.,
Li Y.
Publication year - 2014
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201206571
Subject(s) - materials science , corrosion , yttria stabilized zirconia , thermal barrier coating , cubic zirconia , monoclinic crystal system , phase (matter) , metallurgy , substrate (aquarium) , thermal spraying , composite material , crystallography , coating , crystal structure , ceramic , chemistry , oceanography , organic chemistry , geology
Thermal barrier coatings of nanostructured and microstructured yttria stabilized zirconia (YSZ) were deposited on GH4049 substrate by air plasma spray, respectively. Hot corrosion behaviors of both coatings were evaluated in comparative aspects. Results revealed that the nanostructured YSZ displayed higher resistance to the hot corrosion attack by Na 2 SO 4 and V 2 O 5 . It was also shown, through X‐ray diffraction quantitative phase analysis, that the nanostructured YSZ had good resistance to the tetragonal‐monoclinic phase transformation during the hot corrosion process.