Delayed Parabolic Oxidation via Transient Thermal Exposures on a Polycrystalline Nickel-Based Superalloy

Jackson Wo; David Collins; Mary Taylor; Mark Hardy; Howard Stone

doi:10.1016/j.corsci.2023.111675

Delayed Parabolic Oxidation via Transient Thermal Exposures on a Polycrystalline Nickel-Based Superalloy

Jackson Wo, David Collins, Mary Taylor, Mark Hardy, Howard Stone^*

^*Corresponding author for this work

Metallurgy and Materials

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

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Abstract

Multiple oxides were observed during the transient oxidation stage of the polycrystalline Ni-based superalloy, RR1000, before a protective Cr₂O₃ scale formed. Thermogravimetric analysis, synchrotron grazing incidence X-ray diffraction, and electron microscopy were performed on samples subjected to isothermal exposures at 800 °C for up to 100 hours. Transient effects governed the early stages up to 40 hours. NiO, spinels (NiCr₂O₄, (Ni,Co)(Cr,Co)₂O₄), Cr₂O₃/(Cr_0.88Ti_0.12)₂O₃, NiTiO₃, and CrTaO₄ formed during the initial stage with pseudo-linear kinetics. At the onset of parabolic kinetics, extensive Cr₂O₃ and TiO₂ growth dominated scale formation with the former emerging as the major passivating oxide.

Original language	English
Article number	111675
Number of pages	19
Journal	Corrosion Science
Early online date	22 Nov 2023
DOIs	https://doi.org/10.1016/j.corsci.2023.111675
Publication status	E-pub ahead of print - 22 Nov 2023

Bibliographical note

Funding
The authors are grateful to the Cambridge Trusts and Rolls-Royce plc for financial support. The provision of beamtime at the I11 instrument, Diamond Light Source is acknowledged under Proposal EE18972. JWXW acknowledges the support of the Natural Sciences and Engineering Research Council of Canada (NSERC), [funding reference number PGSD3-532682-2019]. Cette recherche a été financée par le Conseil de recherches en sciences naturelles et en génie du Canada (CRSNG), [numéro de référence PGSD3-532682-2019].

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@article{e153d01925d942599403aad71f5733c4,

title = "Delayed Parabolic Oxidation via Transient Thermal Exposures on a Polycrystalline Nickel-Based Superalloy",

abstract = "Multiple oxides were observed during the transient oxidation stage of the polycrystalline Ni-based superalloy, RR1000, before a protective Cr2O3 scale formed. Thermogravimetric analysis, synchrotron grazing incidence X-ray diffraction, and electron microscopy were performed on samples subjected to isothermal exposures at 800 °C for up to 100 hours. Transient effects governed the early stages up to 40 hours. NiO, spinels (NiCr2O4, (Ni,Co)(Cr,Co)2O4), Cr2O3/(Cr0.88Ti0.12)2O3, NiTiO3, and CrTaO4 formed during the initial stage with pseudo-linear kinetics. At the onset of parabolic kinetics, extensive Cr2O3 and TiO2 growth dominated scale formation with the former emerging as the major passivating oxide.",

author = "Jackson Wo and David Collins and Mary Taylor and Mark Hardy and Howard Stone",

note = "Funding The authors are grateful to the Cambridge Trusts and Rolls-Royce plc for financial support. The provision of beamtime at the I11 instrument, Diamond Light Source is acknowledged under Proposal EE18972. JWXW acknowledges the support of the Natural Sciences and Engineering Research Council of Canada (NSERC), [funding reference number PGSD3-532682-2019]. Cette recherche a {\'e}t{\'e} financ{\'e}e par le Conseil de recherches en sciences naturelles et en g{\'e}nie du Canada (CRSNG), [num{\'e}ro de r{\'e}f{\'e}rence PGSD3-532682-2019].",

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doi = "10.1016/j.corsci.2023.111675",

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journal = "Corrosion Science",

issn = "0010-938X",

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T1 - Delayed Parabolic Oxidation via Transient Thermal Exposures on a Polycrystalline Nickel-Based Superalloy

AU - Wo, Jackson

AU - Collins, David

AU - Taylor, Mary

AU - Hardy, Mark

AU - Stone, Howard

N1 - Funding The authors are grateful to the Cambridge Trusts and Rolls-Royce plc for financial support. The provision of beamtime at the I11 instrument, Diamond Light Source is acknowledged under Proposal EE18972. JWXW acknowledges the support of the Natural Sciences and Engineering Research Council of Canada (NSERC), [funding reference number PGSD3-532682-2019]. Cette recherche a été financée par le Conseil de recherches en sciences naturelles et en génie du Canada (CRSNG), [numéro de référence PGSD3-532682-2019].

PY - 2023/11/22

Y1 - 2023/11/22

N2 - Multiple oxides were observed during the transient oxidation stage of the polycrystalline Ni-based superalloy, RR1000, before a protective Cr2O3 scale formed. Thermogravimetric analysis, synchrotron grazing incidence X-ray diffraction, and electron microscopy were performed on samples subjected to isothermal exposures at 800 °C for up to 100 hours. Transient effects governed the early stages up to 40 hours. NiO, spinels (NiCr2O4, (Ni,Co)(Cr,Co)2O4), Cr2O3/(Cr0.88Ti0.12)2O3, NiTiO3, and CrTaO4 formed during the initial stage with pseudo-linear kinetics. At the onset of parabolic kinetics, extensive Cr2O3 and TiO2 growth dominated scale formation with the former emerging as the major passivating oxide.

AB - Multiple oxides were observed during the transient oxidation stage of the polycrystalline Ni-based superalloy, RR1000, before a protective Cr2O3 scale formed. Thermogravimetric analysis, synchrotron grazing incidence X-ray diffraction, and electron microscopy were performed on samples subjected to isothermal exposures at 800 °C for up to 100 hours. Transient effects governed the early stages up to 40 hours. NiO, spinels (NiCr2O4, (Ni,Co)(Cr,Co)2O4), Cr2O3/(Cr0.88Ti0.12)2O3, NiTiO3, and CrTaO4 formed during the initial stage with pseudo-linear kinetics. At the onset of parabolic kinetics, extensive Cr2O3 and TiO2 growth dominated scale formation with the former emerging as the major passivating oxide.

U2 - 10.1016/j.corsci.2023.111675

DO - 10.1016/j.corsci.2023.111675

M3 - Article

SN - 0010-938X

JO - Corrosion Science

JF - Corrosion Science

M1 - 111675

ER -

Delayed Parabolic Oxidation via Transient Thermal Exposures on a Polycrystalline Nickel-Based Superalloy

Abstract

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