Microstructure of Thermal Barrier Coatings Deposited by Low Pressure Plasma Spraying and Chemical Vapour Deposition Methods on Rene 80 Nickel Superalloy

Marek Goral; Maciej Pytel; Wojciech Cmela; Sławomir Kotowski

doi:10.4028/www.scientific.net/SSP.227.333

Paper Titles

The Formation of TBCs Using LPPS, CVD and PS-PVD Methods on CMSX-4 Single-Crystal Nickel Superalloy
p.317

The Influence of Overaluminizing on TGO Formation on Thermal Barrier Coatings Deposited by Low Pressure Plasma Spraying and Chemical Vapour Deposition Methods on Rene 80 Nickel Superalloy
p.321

Microstructure and Isothermal Oxidation Resistance of Thermal Barrier Coatings Deposited by LPPS, CVD and PS-PVD Methods on Inconel 617 Nickel Superalloy
p.325

Heat Resistance and Heat Capacity of the Selected Nickel Superalloys
p.329

Microstructure of Thermal Barrier Coatings Deposited by Low Pressure Plasma Spraying and Chemical Vapour Deposition Methods on Rene 80 Nickel Superalloy
p.333

Evaluation of Hot Corrosion Resistance of Directionally Solidified Nickel-Based Superalloy
p.337

The Impact of the Organic Form of Sulphur Originating from Coal on the Performance of Solid Oxide Fuel Cells
p.341

Oxidation Behavior of Aluminide Coated Ti-Al-Cr-Nb-Zr-Y Alloys at High Temperatures
p.345

Degradation of Diffusive Aluminide Coating after Service in ZhS6K Superalloy
p.349

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Microstructure of Thermal Barrier Coatings Deposited by Low Pressure Plasma Spraying and Chemical Vapour Deposition Methods on Rene 80 Nickel Superalloy

Abstract:

The paper presents results of research into thermal barrier coatings characterized by high oxidation resistance and hot corrosion. Bondcoats were formed by overaluminizing of an MeCrAlY–type coating deposited by low pressure plasma spraying. The outer ceramic layer of yttrium oxide stabilized zirconia oxide (Metco 6700) was deposited by plasma spray physical vapour deposition (PS-PVD). For comparison purposes additionally LPPS-sprayed were MeCrAlY bondcoats, which were not subsequently aluminized. Used as base material was Rene 80 nickel superalloy. The research has shown that as a result of aluminizing by the CVD method there was formed in the bondcoat a deposit zone built of the β-NiAl phase which protects from oxidation. Preserved below increased chromium content ensures resistance to hot corrosion. The outer ceramic layer was characterized by columnar structure similar to that obtained in the EB-PVD process.

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Periodical:

Solid State Phenomena (Volume 227)

Pages:

333-336

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.227.333

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Online since:

January 2015

Authors:

Marek Goral*, Maciej Pytel, Wojciech Cmela, Sławomir Kotowski

Keywords:

CVD Aluminizing, Hot Corrosion, Low Pressure Plasma Spraying, Plasma Spray Physical Vapour Depositon, TBC

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