Study of the microstructural control of Ba(Mg1/3Ta2/3)O3 perovskite thermal barrier coating deposited by solution precursor plasma spray

2020 ◽  
Vol 389 ◽  
pp. 125633 ◽  
Author(s):  
Huidong Hou ◽  
Jocelyn Veilleux ◽  
François Gitzhofer ◽  
Quansheng Wang
Keyword(s):  
Thermal Barrier Coating ◽  
Plasma Spray ◽  
Thermal Barrier ◽  
Solution Precursor Plasma Spray ◽  
Barrier Coating ◽  
Solution Precursor ◽  
Microstructural Control

Preparation of SrZrO3 Thermal Barrier Coating by Solution Precursor Plasma Spray

2017 ◽  
Vol 26 (3) ◽  
pp. 371-377 ◽  
Author(s):  
Xinhui Li ◽  
Wen Ma ◽  
Jing Wen ◽  
Yu Bai ◽  
Li Sun ◽  
...  
Keyword(s):  
Thermal Barrier Coating ◽  
Plasma Spray ◽  
Thermal Barrier ◽  
Solution Precursor Plasma Spray ◽  
Barrier Coating ◽  
Solution Precursor

The Solution Precursor Plasma Spray Process for Making Durable Thermal Barrier Coatings

2005 ◽  
Author(s):  
Maurice Gell ◽  
Fang Wu ◽  
Eric H. Jordan ◽  
Nitin P. Padture ◽  
Baki M. Cetegen ◽  
...  
Keyword(s):  
Plasma Spray ◽  
Plasma Plume ◽  
Thermal Barrier ◽  
Solution Precursor Plasma Spray ◽  
Spray Process ◽  
Plasma Spray Process ◽  
Barrier Coating ◽  
Solution Precursor ◽  
And Control ◽  
Thick Coatings

The Solution Precursor Plasma Spray (SPPS) process involves the injection of atomized droplets of precursor into the plasma plume, instead of powder that is used in conventional plasma spray. The resultant thermal barrier coating (TBC) microstructure consists of (1) through-coating-thickness cracks, (2) ultra-fine splats, and (3) nanometer and micrometer-sized dispersed pores. These unique SPPS microstructural features provide highly durable TBCs. The SPPS TBCs in 1121°C /1 hour cyclic furnace tests exhibit a significantly improved spallation life compared to APS, DVC, and EB-PVD/Pt-Al TBCs. Extensive process diagnostic and modeling studies have been conducted to provide a foundation for understanding and control of the process. Process/microstructure/property relationships have been defined. Extension of the process for making thick coatings (> 3mm) and low thermal conductivity coatings are described.

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