Columnar and DVC-structured thermal barrier coatings deposited by suspension plasma spray: high-temperature stability and their corrosion resistance to the molten salt

Chen Xiaolong , Takuma Ohnuki , S. Kuroda , H. Araki , M. Watanabe , Yoshio Sakka , Maciej Giżyński

Abstract

High-temperature stability of SPS YSZ coatings with the columnar and deep vertically cracked (DVC) structures and their corrosion resistance to 56 wt% V2O5+44 wt% Na2SO4 molten salt mixture were investigated. Both the columnar and DVC-structured YSZ coatings were sintered at 1000 °C, but a significant increase in porosity in combination with significant reductions in Vickers’ hardness and Young's modulus were observed at the temperatures from 1200 °C to 1400 °C. The DVC-structured YSZ coating exhibited superior corrosion resistance against the molten salt mixture attack to the columnar-structured one due to its higher density behaving as a sealing protective top layer at 950 °C.
Author Chen Xiaolong - National Institute for Materials Science Tsukuba (NIMS)
Chen Xiaolong,,
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, Takuma Ohnuki - National Institute for Materials Science Tsukuba (NIMS)
Takuma Ohnuki,,
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, S. Kuroda
S. Kuroda,,
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, H. Araki
H. Araki,,
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, M. Watanabe
M. Watanabe,,
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, Yoshio Sakka
Yoshio Sakka,,
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, Maciej Giżyński WIM
Maciej Giżyński,,
- Faculty of Materials Science and Engineering
Journal seriesCeramics International, ISSN 0272-8842
Issue year2016
Vol42
No15
Pages16822-16832
Publication size in sheets0.5
Keywords in PolishKorozja; Natryskiwanie plazmowe; Zawiesiny; Powłoki TBC; Stabilizowany tlenek cyrkonu
Keywords in EnglishYSZ/ Corrosion; Plasma spraying; Suspension; Thermal barrier coating; YSZ
DOIDOI:10.1016/j.ceramint.2016.07.174
URL http://dx.doi.org/10.1016/j.ceramint.2016.07.174
Languageen angielski
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Columnar and DVC-structured thermal barrier coatings deposited by suspension plasma spray high-temperature stability and their corrosion resistance to the molten salt.pdf (file archived - login or check accessibility on faculty) Columnar and DVC-structured thermal barrier coatings deposited by suspension plasma spray high-temperature stability and their corrosion resistance to the molten salt.pdf 8.44 MB
Score (nominal)40
ScoreMinisterial score = 40.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 2.986 (2) - 2016=2.814 (5)
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