Microstructures and deposition mechanisms of quasi-columnar structured yttria-stabilized zirconia coatings by plasma spray physical vapor deposition

2017 ◽  
Vol 43 (15) ◽  
pp. 12920-12929 ◽  
Author(s):  
Baopeng Zhang ◽  
Liangliang Wei ◽  
Hongbo Guo ◽  
Huibin Xu
Keyword(s):  
Plasma Spray ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia

Dense yttria-stabilized zirconia coatings fabricated by plasma spray-physical vapor deposition

2017 ◽  
Vol 43 (2) ◽  
pp. 2305-2313 ◽  
Author(s):  
Fang Shao ◽  
Huayu Zhao ◽  
Chenguang Liu ◽  
Xinghua Zhong ◽  
Yin Zhuang ◽  
...  
Keyword(s):  
Plasma Spray ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia

Deposition mechanisms of yttria-stabilized zirconia coatings during plasma spray physical vapor deposition

2016 ◽  
Vol 42 (4) ◽  
pp. 5530-5536 ◽  
Author(s):  
Lihua Gao ◽  
Liangliang Wei ◽  
Hongbo Guo ◽  
Shengkai Gong ◽  
Huibin Xu
Keyword(s):  
Plasma Spray ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia

Microstructures of Yttria-Stabilized Zirconia Coatings by Plasma Spray-Physical Vapor Deposition

2014 ◽  
Vol 24 (3) ◽  
pp. 534-541 ◽  
Author(s):  
Chenyi Li ◽  
Hongbo Guo ◽  
Lihua Gao ◽  
Liangliang Wei ◽  
Shengkai Gong ◽  
...  
Keyword(s):  
Plasma Spray ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia

Burner Rig Evaluation of Ceramic Coatings With Vanadium-Contaminated Fuels

1990 ◽  
Vol 112 (4) ◽  
pp. 536-542 ◽  
Author(s):  
B. A. Nagaraj ◽  
D. J. Wortman
Keyword(s):  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Ceramic Coatings ◽  
Yttria Stabilized Zirconia ◽  
Reaction Products ◽  
Stabilized Zirconia ◽  
Test Environment ◽  
Turbine Engine ◽  
Partial Pressures ◽  
Ysz Coating

The performance of yttria-stabilized zirconia (YSZ), ceria-stabilized zirconia (CSZ), and magnesia-stabilized zirconia (MSZ) coatings was evaluated using an atmospheric burner rig; test environment contained compounds of vanadium, sodium, and sulfur. The coatings were deposited by plasma spraying and electron beam physical vapor deposition (EB-PVD); sputtered sealant layers of hafnia, alumina, and platinum were deposited on the YSZ coating. The tests were performed for up to 500 hours at 1650°F and 1300°F. The tests were designed to simulate the deposit chemistry and sulfur trioxide partial pressures expected in a marine gas turbine engine operating on contaminated fuel. YSZ, CSZ, and MSZ coatings all underwent reaction in the burner rig environment; the reaction products and their effects on spallation were varied. MSZ was by far the most reactive, readily forming MgSO4 in both 1650°F and 1300°F tests. The observed reaction products provided a measure of “protection” for the bond coat by preventing molten salt infiltration for the duration of the test. The mechanism of ceramic spallation is discussed. Sputtered overlayers of platinum, hafnia, and alumina did not prevent salt infiltration and reaction with the underlying ceramic, although no reaction product between the overlayer and the salt was observed.

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