Long term oxidation of NiCoCrAlY coated Ni-based superalloys: A comparison of observed and simulated interdiffusion

K. A. Kane; R. R. Pillai; M. J. Lance; B. A. Pint

doi:10.1016/j.corsci.2023.111213

Long term oxidation of NiCoCrAlY coated Ni-based superalloys: A comparison of observed and simulated interdiffusion

K. A. Kane, R. R. Pillai, M. J. Lance, B. A. Pint

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

5 Scopus citations

Abstract

Lifetimes of MCrAlY-type coatings can easily surpass 25 kh when the criteria of ß-depletion is used. To reduce experimental effort, it's necessary to develop models capable of simulating interdiffusion and oxidation. In the present study, NiCoCrAlY coatings were high velocity oxyfuel deposited on PWA 1483, MARM247, and CMSX-4 substrates, and samples were exposed at 900 °C for 5–20 kh in air+ 10 vol%H₂O to study interdiffusion rates. Thermo-Calc/DICTRA was used to reproduce the observed differences, and microstructures were compared. Based on the agreement between calculated and observed rates, simulations were projected past the experimental exposures, utilizing ß-depletion as lifetime criteria.

Original language	English
Article number	111213
Journal	Corrosion Science
Volume	219
DOIs	https://doi.org/10.1016/j.corsci.2023.111213
State	Published - Jul 15 2023

Funding

The authors would like to thank G. Garner, T. Geer, and M. Howell for their technical assistance throughout the years of this study. This study was funded by the Advanced Turbine Program , (R. Dennis) of the Office of Fossil Energy, Department of Energy.

Funders	Funder number
U.S. Department of Energy
Office of Fossil Energy

Keywords

Diffusion modelling
High temperature oxidation
Ni-based superalloys

Access to Document

10.1016/j.corsci.2023.111213

Cite this

@article{54ed15044d104fc59c532f1bc4600d81,

title = "Long term oxidation of NiCoCrAlY coated Ni-based superalloys: A comparison of observed and simulated interdiffusion",

abstract = "Lifetimes of MCrAlY-type coatings can easily surpass 25 kh when the criteria of {\ss}-depletion is used. To reduce experimental effort, it's necessary to develop models capable of simulating interdiffusion and oxidation. In the present study, NiCoCrAlY coatings were high velocity oxyfuel deposited on PWA 1483, MARM247, and CMSX-4 substrates, and samples were exposed at 900 °C for 5–20 kh in air+ 10 vol%H2O to study interdiffusion rates. Thermo-Calc/DICTRA was used to reproduce the observed differences, and microstructures were compared. Based on the agreement between calculated and observed rates, simulations were projected past the experimental exposures, utilizing {\ss}-depletion as lifetime criteria.",

keywords = "Diffusion modelling, High temperature oxidation, Ni-based superalloys",

author = "Kane, {K. A.} and Pillai, {R. R.} and Lance, {M. J.} and Pint, {B. A.}",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = jul,

day = "15",

doi = "10.1016/j.corsci.2023.111213",

language = "English",

volume = "219",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier",

}

TY - JOUR

T1 - Long term oxidation of NiCoCrAlY coated Ni-based superalloys

T2 - A comparison of observed and simulated interdiffusion

AU - Kane, K. A.

AU - Pillai, R. R.

AU - Lance, M. J.

AU - Pint, B. A.

PY - 2023/7/15

Y1 - 2023/7/15

N2 - Lifetimes of MCrAlY-type coatings can easily surpass 25 kh when the criteria of ß-depletion is used. To reduce experimental effort, it's necessary to develop models capable of simulating interdiffusion and oxidation. In the present study, NiCoCrAlY coatings were high velocity oxyfuel deposited on PWA 1483, MARM247, and CMSX-4 substrates, and samples were exposed at 900 °C for 5–20 kh in air+ 10 vol%H2O to study interdiffusion rates. Thermo-Calc/DICTRA was used to reproduce the observed differences, and microstructures were compared. Based on the agreement between calculated and observed rates, simulations were projected past the experimental exposures, utilizing ß-depletion as lifetime criteria.

AB - Lifetimes of MCrAlY-type coatings can easily surpass 25 kh when the criteria of ß-depletion is used. To reduce experimental effort, it's necessary to develop models capable of simulating interdiffusion and oxidation. In the present study, NiCoCrAlY coatings were high velocity oxyfuel deposited on PWA 1483, MARM247, and CMSX-4 substrates, and samples were exposed at 900 °C for 5–20 kh in air+ 10 vol%H2O to study interdiffusion rates. Thermo-Calc/DICTRA was used to reproduce the observed differences, and microstructures were compared. Based on the agreement between calculated and observed rates, simulations were projected past the experimental exposures, utilizing ß-depletion as lifetime criteria.

KW - Diffusion modelling

KW - High temperature oxidation

KW - Ni-based superalloys

UR - http://www.scopus.com/inward/record.url?scp=85162231286&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2023.111213

DO - 10.1016/j.corsci.2023.111213

M3 - Article

AN - SCOPUS:85162231286

SN - 0010-938X

VL - 219

JO - Corrosion Science

JF - Corrosion Science

M1 - 111213

ER -

Long term oxidation of NiCoCrAlY coated Ni-based superalloys: A comparison of observed and simulated interdiffusion

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this