Three-dimensional nanoscale characterisation of materials by atom probe tomography

Devaraj, Arun; Perea, Daniel E.; Liu, Jia; Gordon, Lyle M.; Prosa, Ty J.; Parikh, Pritesh; Diercks, David R.; Meher, Subhashish; Kolli, R. Prakash; Meng, Ying Shirley; Thevuthasan, Suntharampillai

doi:10.1080/09506608.2016.1270728

Cited by 136 publications

(88 citation statements)

References 266 publications

(469 reference statements)

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“…However, some length-scale challenges can be addressed by employing state-of-theart techniques such as atom probe tomography (APT) [183], high-resolution transmission electron microscopy (HRTEM), and high-angle annular dark-field imaging in scanning transmission electron microscope mode (HAADF-STEM). The use of complementary APT experimental techniques such as APT with HAADF-STEM can provide a combination of nano-scale compositional and structural information that one technique alone cannot provide possibly leading to greater scientific understanding [184].…”

Section: Discussionmentioning

confidence: 99%

A Review of Metastable Beta Titanium Alloys

Kolli

Devaraj

2018

Metals

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454

175

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Abstract:In this article, we provide a broad and extensive review of beta titanium alloys. Beta titanium alloys are an important class of alloys that have found use in demanding applications such as aircraft structures and engines, and orthopedic and orthodontic implants. Their high strength, good corrosion resistance, excellent biocompatibility, and ease of fabrication provide significant advantages compared to other high performance alloys. The body-centered cubic (bcc) β-phase is metastable at temperatures below the beta transus temperature, providing these alloys with a wide range of microstructures and mechanical properties through processing and heat treatment. One attribute important for biomedical applications is the ability to adjust the modulus of elasticity through alloying and altering phase volume fractions. Furthermore, since these alloys are metastable, they experience stress-induced transformations in response to deformation. The attributes of these alloys make them the subject of many recent studies. In addition, researchers are pursuing development of new metastable and near-beta Ti alloys for advanced applications. In this article, we review several important topics of these alloys including phase stability, development history, thermo-mechanical processing and heat treatment, and stress-induced transformations. In addition, we address recent developments in new alloys, phase stability, superelasticity, and additive manufacturing.

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Section: Discussionmentioning

confidence: 99%

A Review of Metastable Beta Titanium Alloys

Kolli

Devaraj

2018

Metals

Self Cite

454

175

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“…Two characterization techniques that provide high spatial resolution information are Atom Probe Tomography (APT) and Scanning Transmission X‐ray Microscopy (STXM) . APT is a single atom 3‐D microscopy that is able to reconstruct the 3‐D position and chemical identity of all atoms with sub‐nanometer resolution from a needle shaped specimen with dimensions of tens to hundreds of nanometers, making it the highest resolution technique to provide 3‐D elemental identification ,,. STXM relies on a zone plate to focus soft X‐rays emitted by a synchrotron onto a small spot on the sample, through which the sample is scanned, and by measuring the total transmitted intensity of the beam as a function of energy it can give information about local chemical environment and abundance.…”

Section: Introductionmentioning

confidence: 99%

Probing the Location and Speciation of Elements in Zeolites with Correlated Atom Probe Tomography and Scanning Transmission X‐Ray Microscopy

Schmidt

Ravenhorst

et al. 2018

ChemCatChem

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Characterizing materials at nanoscale resolution to provide new insights into structure property performance relationships continues to be a challenging research target due to the inherently low signal from small sample volumes, and is even more difficult for nonconductive materials, such as zeolites. Herein, we present the characterization of a single Cu‐exchanged zeolite crystal, namely Cu‐SSZ‐13, used for NO X reduction in automotive emissions, that was subject to a simulated 135,000‐mile aging. By correlating Atom Probe Tomography (APT), a single atom microscopy method, and Scanning Transmission X‐ray Microscopy (STXM), which produces high spatial resolution X‐ray Absorption Near Edge Spectroscopy (XANES) maps, we show that a spatially non‐uniform proportion of the Al was removed from the zeolite framework. The techniques reveal that this degradation is heterogeneous at length scales from micrometers to tens of nanometers, providing complementary insight into the long‐term deactivation of this catalyst system.

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“…is more difficult to quantitatively analyze with TEM-EDS or electron energy loss spectroscopy (EELS) [28][29][30]. The full range of techniques can be used to examine material before and different material after cycling as shown for STXM and XANES data in Fig.…”

Section: Example Measurementsmentioning

confidence: 99%

Multimodal and in-situ Chemical Imaging of Critical Surfaces and Interfaces in Advanced Batteries

Wang

Yan

Zhu

et al. 2017

JSA

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Interfaces play a critical role in the properties and lifetime of current generation and advanced batteries. However, detailed characterization of the critical interfaces during battery operation which can enable performance improvements and improved design has been a significant challenge requiring innovative technique development and creative experiments. This paper describes ways that information from a range of microscopy, spectroscopy, and spectrometry tools can be used to address important challenges associated with energy storage science and technology, in particular the development of advanced batteries for consumer use, transportation, and renewable storage. Expanding the types of measurements that can be made on operational model batteries has significantly expanded the type and quality of information that can be obtained. This paper first shows examples of approaches being used to collect in situ transmission electron microscopy (TEM), secondary ion mass spectrometry and x-ray photoelectron spectroscopy (XPS) data.The final section of the paper briefly shows two examples: the use of in situ XPS to examine solid-electrolyte interphase layers and a multimodal chemical imaging approach, including scanning TEM, atom probe tomography, scanning transmission x-ray microscopy, and x-ray adsorption near edge spectroscopy to understand the nanostructure and improve the performance of layered lithium transition metal oxide cathodes.

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Three-dimensional nanoscale characterisation of materials by atom probe tomography

Cited by 136 publications

References 266 publications

A Review of Metastable Beta Titanium Alloys

A Review of Metastable Beta Titanium Alloys

Probing the Location and Speciation of Elements in Zeolites with Correlated Atom Probe Tomography and Scanning Transmission X‐Ray Microscopy

Multimodal and in-situ Chemical Imaging of Critical Surfaces and Interfaces in Advanced Batteries

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