Effect of substrate alloy composition on the oxidation behaviour and degradation of aluminide coatings on two Ni base superalloys

W. Leng; R. Pillai; D. Naumenko; T. Galiullin; W. J. Quadakkers

doi:10.1016/j.corsci.2020.108494

Effect of substrate alloy composition on the oxidation behaviour and degradation of aluminide coatings on two Ni base superalloys

W. Leng, R. Pillai, D. Naumenko, T. Galiullin, W. J. Quadakkers

Corrosion Science & Technology

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

The oxidation behaviour and microstructural evolution of aluminide coatings on the Ni base superalloys Rene 80 and alloy 625 were investigated during 1050 °C oxidation in air. Alumina based oxide scales formed on the coating surfaces of both alloys and only minor differences in scale growth and spallation kinetics were found. A coupled thermodynamic-kinetic model was employed to describe the effect of the base material on the depletion processes and microstructural changes in the aluminide coating thus providing a tool for coating life time prediction without very extensive test programs.

Original language	English
Article number	108494
Journal	Corrosion Science
Volume	167
DOIs	https://doi.org/10.1016/j.corsci.2020.108494
State	Published - May 1 2020

Funding

The authors are grateful to Mr. Gianpaolo Mor and Dr. Francesco Mor from FLAME SPRAY North America for supplying the aluminized materials. This work was conducted in the Institute of Energy and Climate Research (IEK-2) at Forschungszentrum Jülich GmbH . The authors would like to acknowledge Mr. H. Cosler for carrying out the high temperature exposures, Dr. D. Grüner for SEM/EDX analyses and Dr. E. Wessel for the EBSD measurements. The China Scholarship Council (Grant No. 201507040024 ) is kindly acknowledged for the financial support of this work. The authors are grateful to Mr. Gianpaolo Mor and Dr. Francesco Mor from FLAME SPRAY North America for supplying the aluminized materials. This work was conducted in the Institute of Energy and Climate Research (IEK-2) at Forschungszentrum J?lich GmbH. The authors would like to acknowledge Mr. H. Cosler for carrying out the high temperature exposures, Dr. D. Gr?ner for SEM/EDX analyses and Dr. E. Wessel for the EBSD measurements. The China Scholarship Council (Grant No. 201507040024) is kindly acknowledged for the financial support of this work.

Funders	Funder number
Institute of Energy and Climate Research
China Scholarship Council	201507040024

Keywords

Aluminide coating
Diffusion
Microstructural evolution
Modelling
Ni base alloy
Oxide scale

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title = "Effect of substrate alloy composition on the oxidation behaviour and degradation of aluminide coatings on two Ni base superalloys",

abstract = "The oxidation behaviour and microstructural evolution of aluminide coatings on the Ni base superalloys Rene 80 and alloy 625 were investigated during 1050 °C oxidation in air. Alumina based oxide scales formed on the coating surfaces of both alloys and only minor differences in scale growth and spallation kinetics were found. A coupled thermodynamic-kinetic model was employed to describe the effect of the base material on the depletion processes and microstructural changes in the aluminide coating thus providing a tool for coating life time prediction without very extensive test programs.",

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AU - Leng, W.

AU - Pillai, R.

AU - Naumenko, D.

AU - Galiullin, T.

AU - Quadakkers, W. J.

PY - 2020/5/1

Y1 - 2020/5/1

N2 - The oxidation behaviour and microstructural evolution of aluminide coatings on the Ni base superalloys Rene 80 and alloy 625 were investigated during 1050 °C oxidation in air. Alumina based oxide scales formed on the coating surfaces of both alloys and only minor differences in scale growth and spallation kinetics were found. A coupled thermodynamic-kinetic model was employed to describe the effect of the base material on the depletion processes and microstructural changes in the aluminide coating thus providing a tool for coating life time prediction without very extensive test programs.

AB - The oxidation behaviour and microstructural evolution of aluminide coatings on the Ni base superalloys Rene 80 and alloy 625 were investigated during 1050 °C oxidation in air. Alumina based oxide scales formed on the coating surfaces of both alloys and only minor differences in scale growth and spallation kinetics were found. A coupled thermodynamic-kinetic model was employed to describe the effect of the base material on the depletion processes and microstructural changes in the aluminide coating thus providing a tool for coating life time prediction without very extensive test programs.

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KW - Diffusion

KW - Microstructural evolution

KW - Modelling

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KW - Oxide scale

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JO - Corrosion Science

JF - Corrosion Science

M1 - 108494

ER -

Effect of substrate alloy composition on the oxidation behaviour and degradation of aluminide coatings on two Ni base superalloys

Abstract

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Keywords

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