High Temperature Cyclic Oxidation of Coatings on Ni-Based Superalloys

Marta Kianicova; Jaroslav Trník

doi:10.4028/www.scientific.net/SSP.226.137

Paper Titles

Porosity of Solid and Cored Turbine Blades of Aircraft Engines
p.115

Laser Remelting of Silicide Coatings on Mo and TZM Alloy
p.121

Profilometric Assessment of Surface Condition of Zinc Coatings Formed by the Continuous Galvanizing Method
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The Influence of Si Content in Steel on Growth Kinetics and Structure of Hot Dip ZnAl23Si Coatings
p.133

High Temperature Cyclic Oxidation of Coatings on Ni-Based Superalloys
p.137

Zinc Coatings Obtained by Hot Dip Method on the High Strength Steel for Link Chains
p.143

The Influence of High Velocity Thermal Spraying Methods on Top Surface Topography of WC-Co Coatings
p.149

The Structure of Coatings Obtained in a ZnAl23Si Bath by the Batch Hot Dip Method
p.155

Characteristics of Selected Tribological Properties of New Thermally Sprayed Coatings
p.161

HomeSolid State PhenomenaSolid State Phenomena Vol. 226High Temperature Cyclic Oxidation of Coatings on...

High Temperature Cyclic Oxidation of Coatings on Ni-Based Superalloys

Abstract:

The cyclic oxidation behavior of diffusion protective Al and SiAl coatings used on Ni-superalloy namely MAR-M247 at 1100°C for 38 cycles in the air under cyclic heating and cooling conditions has been investigated in the present work. Cyclic oxidation test was carried out in laboratories of Silesian University of Technology in Katowice, Poland. Cylindrical samples were casted from mentioned alloy in factory PBS Velká Bíteš, a.s., Czech Republic. The oxidation kinetics of coated and uncoated superalloys was analyzed by thermo-gravimetric technique. It was observed that all the coated and bare superalloys obey a parabolic rate law of oxidation. SEM/EDX techniques were used to analyses the oxidation products of all samples. MAR-M247 with Al coating showed good oxidation resistance due to the formation of a compact and adhesive thin Al₂O₃ scale on the surface of the coating during oxidation. SiAl coating showed equally good oxidation resistance. The oxidation progress of uncoated alloy MAR-M247 was very fast.

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Periodical:

Solid State Phenomena (Volume 226)

Pages:

137-142

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.226.137

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Online since:

January 2015

Authors:

Marta Kianicova*, Jaroslav Trník

Keywords:

Cyclic Oxidation Damage, Cyclic Oxidation Test, Ni-Superalloy, Protective Coatings

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References

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