Depletion Model of Aluminum in Bond Coat for Plasma-Sprayed Thermal Barrier Coatings

Chang Che; G.Q. Wu; Hong Yu Qi; Z. Huang; Xiao Guang Yang

doi:10.4028/www.scientific.net/AMR.75.31

Paper Titles

A Study of the Structural, Mechanical and Tribological Properties of Ti-Al-N Coatings Post-Treated by Carbon Implantation
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Study on Photocatalytic Degradation of Electroless Ni-P-TiO₂ Composite Coating
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A Study on the Properties, Friction, Wear and Adhesion of HVOF Thermal Spray Coating of Micron Size Co-Alloy Powder
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Wear and Cutting Performance of Microdrills Coated Hard Film Deposited Using Closed Field Unbalanced Magnetron Sputter Ion Plating
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Depletion Model of Aluminum in Bond Coat for Plasma-Sprayed Thermal Barrier Coatings
p.31

Oxidation Resistance of Multicomponent CrTiAlN Hard Coatings at Elevated Temperatures
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Development of Spherical Iron-Based Composite Powder with Carried Alumina Abrasive Grains by Plasma Spray
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Ceramic Coatings by Electrophoretic Deposition: Processing and Properties
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Electroless Ni-Co-P Coatings on Sintered Nd-Fe-B Magnets with Improved Corrosion Resistance
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 75Depletion Model of Aluminum in Bond Coat for...

Depletion Model of Aluminum in Bond Coat for Plasma-Sprayed Thermal Barrier Coatings

Abstract:

The aluminum depletion of NiCrAlY bond coat in an air-plasma-sprayed thermal barrier coating (TBC) has been studied by experimental and simulative approaches. Upon thermal exposure, Al depletion regions were observed. The depletion of aluminum is resulting from Al diffusion towards the surface of bond coat and into substrate. A mathematical model of Al depletion was presented. The model is able to explain the observed results in a qualitative way and has been shown that Al depletes within the bond coat by diffusion.

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Periodical:

Advanced Materials Research (Volume 75)

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31-35

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https://doi.org/10.4028/www.scientific.net/AMR.75.31

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Online since:

June 2009

Authors:

Chang Che, G.Q. Wu, Hong Yu Qi, Z. Huang, Xiao Guang Yang

Keywords:

Diffusion, Model, Thermal Barrier Coating (TBC)

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