A review on atom probe and correlative microscopy studies of corrosion in nickel-based superalloys

Rodenkirchen, Cynthia; Appleton, Matthew; Ryan, M. P.; Pedrazzini, S.

doi:10.1557/s43577-022-00366-7

Cited by 10 publications

(3 citation statements)

References 74 publications

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“…Material degradation by corrosion is another key area where correlative microscopy with APT can make a significant impact. Rodenkirchen et al 44 discuss the contributions made by correlative microscopy and APT in the area of understanding high-temperature corrosion of Ni-based superalloys used in turbine engines. Specific examples of use of directly correlated STEM and APT in analyzing stress-corrosion cracks in steel are discussed.…”

Section: In This Issuementioning

confidence: 99%

Correlative microscopy and techniques with atom probe tomography: Opportunities in materials science

Cojocaru-Mirédin

Devaraj²

2022

MRS Bulletin

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In the last decade, the applicability of atom probe tomography (APT) has been strongly extended from highly conductive materials such as metals and alloys to semiconductors and insulators as well as to more sophisticated systems. However, atom probe tomography can only provide information about composition for most of these complex materials, while the correlation between composition and other material properties such as structural, functional, and mechanical properties remains challenging to be analyzed by APT alone. Therefore, various groups worldwide have put notable efforts recently in combining APT with other microscopy methods and techniques ex situ and in situ with the goal to understand the composition–property interrelationships at the same position of the sample. Hence, the present work not only provides a short overview of such works, but also describes three short examples of possible opportunities in materials science when using correlative microscopy and techniques with atom probe tomography. Graphical abstract

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Section: In This Issuementioning

confidence: 99%

Correlative microscopy and techniques with atom probe tomography: Opportunities in materials science

Cojocaru-Mirédin

Devaraj²

2022

MRS Bulletin

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“…[24] APT is increasingly being used to analyze oxides and corrosion processes. [25][26][27][28] For example, the transport mechanisms of impurities such as C and Cl [29,30] or the accumulation of S species in oxides, [31] as well as the oxygen and hydrogen diffusion pathways in the early stages of corrosion, have been proved using trace elements such as 18 O or 2 H. [32,33] The segregation alloy elements toward the gas / liquid / metal interface and the formation of a quasi-passivating layer of Al 2 0 3 have also been observed. [34] However, the experiments were performed either in an additional reaction chamber for the gas-solid reaction or the samples were corroded in an aqueous medium liquid and the specimens must be prepared ex situ for APT and therefore the corrosion products etc.…”

Section: Introductionmentioning

confidence: 99%

Quasi‐“In Situ” Analysis of the Reactive Liquid‐Solid Interface during Magnesium Corrosion Using Cryo‐Atom Probe Tomography

Schwarz,

Yang,

Aota

et al. 2024

Advanced Materials

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The early stages of corrosion occurring at liquid‐solid interfaces controls the evolution of the material's degradation process, yet due to their transient state, their analysis remains a formidable challenge. Here we perform corrosion tests on a MgCa alloy, a candidate material for biodegradable implants using pure water as a model system. The corrosion reaction was suspended by plunge freezing into liquid nitrogen. We studied the evolution of the early‐stage corrosion process on the nanoscale by correlating cryo‐atom probe tomography with transmission‐electron microscopy and spectroscopy. We observed the outward growth of Mg hydroxide and the inward growth of an intermediate corrosion layer consisting of hydroxides of different compositions, mostly monohydroxide Mg(OH) instead of the expected MgO layer. In addition, Ca partitions to these newly formed hydroxides and oxides. Density‐functional theory calculations suggest a domain of stability for this previously experimental unreported Mg(OH) phase. These new approach and findings advance the understanding of the early stages of magnesium corrosion, and in general reactions and processes at liquid‐solid interfaces, which can further facilitate the development of corrosion‐resistant materials or better control of the biodegradation rate of future implants.This article is protected by copyright. All rights reserved

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“…For example, in modern, nanoscale FinFET devices, a deficit or excess of only a few tens of dopant atoms can make or break performance (Khan et al, 2016;Martin et al, 2018). At the other extreme, catastrophic failure of jet engine turbine blades can arise from the nanoscale segregation of just a few atoms (Rodenkirchen et al, 2022). Therefore, precisely knowing the position and identity of constituent atoms down to the isotopic level is of paramount importance.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Specimens for Atom Probe Tomography using a Combined Gallium and Neon Focused Ion Beam Milling Approach

Allen¹,

Blanchard²,

Lake³

et al. 2023

Preprint

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We demonstrate a new focused ion beam sample preparation method for atom probe tomography. The key aspect of the new method is that we use a neon ion beam for the final tip shaping after conventional annulus milling using gallium ions. This dual-ion approach combines the benefits of the faster milling capability of the higher current gallium ion beam with the chemically inert and higher precision milling capability of the noble gas neon ion beam. Using a titanium-aluminum alloy and a layered aluminum/aluminum oxide material as test cases, we show that atom probe tips prepared using the combined gallium and neon ion approach are free from the gallium contamination that typically frustrates composition analysis of these materials due to implantation, diffusion, and embrittlement effects. We propose that by using a focused ion beam from a noble gas species, such as the neon ions demonstrated here, atom probe tomography can be more reliably performed on a larger range of materials than is currently possible using conventional techniques.

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A review on atom probe and correlative microscopy studies of corrosion in nickel-based superalloys

Cited by 10 publications

References 74 publications

Correlative microscopy and techniques with atom probe tomography: Opportunities in materials science

Correlative microscopy and techniques with atom probe tomography: Opportunities in materials science

Quasi‐“In Situ” Analysis of the Reactive Liquid‐Solid Interface during Magnesium Corrosion Using Cryo‐Atom Probe Tomography

Fabrication of Specimens for Atom Probe Tomography using a Combined Gallium and Neon Focused Ion Beam Milling Approach

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