Towards durable thermal barrier coatings with novel microstructures deposited by solution-precursor plasma spray

The feasibility of a new processing method—solution precursor plasma spray (SPPS)—for the deposition of ZrO 2-based thermal barrier coatings (TBCs) with novel structures has been demonstrated. These desirable structures in the new TBCs appear to be responsible for their improved thermal cycling life...

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Bibliographic Details
Published in:Acta materialia 2001-07, Vol.49 (12), p.2251-2257
Main Authors: Padture, N.P, Schlichting, K.W, Bhatia, T, Ozturk, A, Cetegen, B, Jordan, E.H, Gell, M, Jiang, S, Xiao, T.D, Strutt, P.R, Garcı́a, E, Miranzo, P, Osendi, M.I
Format: Article
Language:English
Subjects:
Ceramics
Coating
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Methods of deposition of films and coatings
film growth and epitaxy
Physics
Plasma spray
Spray coating techniques
Thermal conductivity
Thermo-mechanical fatigue
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Summary:The feasibility of a new processing method—solution precursor plasma spray (SPPS)—for the deposition of ZrO 2-based thermal barrier coatings (TBCs) with novel structures has been demonstrated. These desirable structures in the new TBCs appear to be responsible for their improved thermal cycling life relative to conventional plasma-sprayed TBCs. Preliminary results from experiments aimed at understanding the SPPS deposition mechanisms suggest that nanometer-scale particles form in the plasma flame, followed by their deposition by sintering onto the substrate in the intense heat of the plasma flame. The SPPS method, which offers some unique advantages over the conventional plasma-spray process, is generic in nature and can be potentially used to deposit a wide variety of ceramic coatings for diverse applications.
ISSN:1359-6454
1873-2453
DOI:10.1016/S1359-6454(01)00130-6