NDLI: Thermal Cycling Behavior of Quasi-Columnar YSZ Coatings Deposited by PS-PVD

Content Provider	Springer Nature Link
Author	Yang, Jiasheng Zhao, Huayu Zhong, Xinghua Shao, Fang Liu, Chenguang Zhuang, Yin Ni, Jinxing Tao, Shunyan
Copyright Year	2016
Abstract	Columnar-structured thermal barrier coatings, owing to their high strain tolerance, are expected for their potential possibilities to substantially extend turbine lives and improve engine efficiencies. In this paper, plasma spray-physical vapor deposition (PS-PVD) process was used to deposit yttria partially stabilized zirconia (YSZ) coatings with quasi-columnar structures. Thermal cyclic tests on burner rigs and thermal shock tests by heating and water-quenching method were involved to evaluate the thermal cycling and thermal shock behaviors of such kind of structured thermal barrier coatings (TBCs). Evolution of the microstructures, phase composition, residual stresses and failure behaviors of quasi-columnar YSZ coatings before and after the thermal tests was investigated. The quasi-columnar coating obtained had an average life of around 623 cycles when the spallation area reached about 10% of the total coating surface during burner rig tests with the coating surface temperature of ~1250 °C. Failure of the coating is mainly due to the break and pull-out of center columnar segments.
Starting Page	132
Ending Page	139
Page Count	8
File Format	PDF
ISSN	10599630
Journal	Journal of Thermal Spray Technology
Volume Number	26
Issue Number	1-2
e-ISSN	15441016
Language	English
Publisher	Springer US
Publisher Date	2016-12-05
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	plasma spray-physical vapor deposition (PS-PVD) quasi-columnar structure thermal barrier coating thermal cyclic test thermal shock test Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings Characterization and Evaluation of Materials Operating Procedures, Materials Treatment Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Materials Chemistry Condensed Matter Physics

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