Microstructure, thermal conductivity and thermal cycling behavior of thermal barrier coatings prepared by plasma spray physical vapor deposition

2015 ◽  
Vol 276 ◽  
pp. 424-430 ◽  
Author(s):  
Lihua Gao ◽  
Hongbo Guo ◽  
Liangliang Wei ◽  
Chenyi Li ◽  
Huibin Xu
Keyword(s):  
Thermal Conductivity ◽  
Thermal Cycling ◽  
Thermal Barrier Coatings ◽  
Plasma Spray ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Thermal Cycling Behavior ◽  
Cycling Behavior

Porosity and Thermal Cycling Behavior of Plasma Sprayed and EBPVD Thermal Barrier Coatings

2010 ◽  
Author(s):  
Ogad Agu ◽  
Ravinder Diwan ◽  
Patrick F. Mensah ◽  
Monica B. Silva ◽  
S. M. Guo
Keyword(s):  
Thermal Cycling ◽  
Thermal Barrier Coatings ◽  
Plasma Spray ◽  
Physical Vapor Deposition ◽  
Atmospheric Plasma Spray ◽  
Atmospheric Plasma ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Thermal Cycling Behavior ◽  
Cycling Behavior

Traditionally, thermal barrier coatings (TBCs) are used in gas turbine engines to create an insulation layer between the metallic components and the gases in the hot section. Atmospheric plasma spray (APS) is a common method used to produce TBCs. The goal of this study is to study the porosity and thermal cycling behavior of standard (STD) and vertically cracked (VC) thermal barrier coatings (TBCs) fabricated by Atmospheric Plasma Spray (APS) for two different thicknesses, 300 and 600 μm respectively. Electron Beam Physical Vapor Deposition (EBPVD) coatings with 300 micron thickness prepared under tumbled and non-tumbled conditions were studied. For this study, mercury porosimeter equipment (POREMASTER 33) by Quantachrome Instruments was used to measure porosity, and pore size distribution. Scanning Electron Microscopy (SEM) images were obtained for all the samples. The images showed clear microstructural difference between the APS and EBPVD coatings. All the coatings were thermal cycled to 1200°C and the conventional APS-STD (300μm) performed the best followed by APS-VC coatings and EBPVD coatings which performed similarly.

Plasma spray–physical vapor deposition toward advanced thermal barrier coatings: a review

Rare Metals ◽  
2020 ◽  
Vol 39 (5) ◽  
pp. 479-497 ◽  
Author(s):  
Mei-Jun Liu ◽  
Gao Zhang ◽  
Yan-Hong Lu ◽  
Jia-Qi Han ◽  
Guang-Rong Li ◽  
...  
Keyword(s):  
Thermal Barrier Coatings ◽  
Plasma Spray ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Thermal Barrier ◽  
Barrier Coatings
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