Nondestructive Nanoscale 3D Elemental Mapping and Analysis of a Solid Oxide Fuel Cell Anode

Grew, Kyle N.; Chu, Yong S.; Yi, Jaemock; Peracchio, Aldo A.; Izzo, John R.; Hwu, Y.; Carlo, Francesco De; Chiu, Wilson K. S.

doi:10.1149/1.3355957

Cited by 136 publications

(121 citation statements)

References 69 publications

(141 reference statements)

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“…SRXTM methods may be complemented with nanoscale approaches such as focused-ion-beam scanning electron microscopy (Keller et al, 2011;Bera et al, 2011), transmission electron microscopy (Kanitpanyacharoen et al, 2011) and X-ray nanotomography (Nelson et al, 2011;Grew et al, 2010). Overall, this round-robin experiment of SRXTM documented that all three beamlines produce similar results with microstructural resolution of approximately 2 mm.…”

Section: Discussionmentioning

confidence: 77%

A comparative study of X-ray tomographic microscopy on shales at different synchrotron facilities: ALS, APS and SLS

Kanitpanyacharoen

Parkinson

Carlo

et al. 2012

J Synchrotron Radiat

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Synchrotron radiation X-ray tomographic microscopy (SRXTM) was used to characterize the three-dimensional microstructure, geometry and distribution of different phases in two shale samples obtained from the North Sea (sample N1) and the Upper Barnett Formation in Texas (sample B1). Shale is a challenging material because of its multiphase composition, small grain size, low but significant amount of porosity, as well as strong shape-and lattice-preferred orientation. The goals of this round-robin project were to (i) characterize microstructures and porosity on the micrometer scale, (ii) compare results measured at three synchrotron facilities, and (iii) identify optimal experimental conditions of high-resolution SRXTM for fine-grained materials. SRXTM data of these shales were acquired under similar conditions at the Advanced Light Source (ALS) of Lawrence Berkeley National Laboratory, USA, the Advanced Photon Source (APS) of Argonne National Laboratory, USA, and the Swiss Light Source (SLS) of the Paul Scherrer Institut, Switzerland. The data reconstruction of all datasets was handled under the same procedures in order to compare the data quality and determine phase proportions and microstructures. With a 10Â objective lens the spatial resolution is approximately 2 mm. The sharpness of phase boundaries in the reconstructed data collected from the APS and SLS was comparable and slightly more refined than in the data obtained from the ALS. Important internal features, such as pyrite (high-absorbing), and low-density features, including pores, fractures and organic matter or kerogen (low-absorbing), were adequately segmented on the same basis. The average volume fractions of low-density features for sample N1 and B1 were estimated at 6.3 (6)% and 4.5 (4)%, while those of pyrite were calculated to be 5.6 (6)% and 2.0 (3)%, respectively. The discrepancy of data quality and volume fractions were mainly due to different types of optical instruments and varying technical set-ups at the ALS, APS and SLS.

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Section: Discussionmentioning

confidence: 77%

A comparative study of X-ray tomographic microscopy on shales at different synchrotron facilities: ALS, APS and SLS

Kanitpanyacharoen

Parkinson

Carlo

et al. 2012

J Synchrotron Radiat

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“…Element-sensitive XNT measurements were performed at X-ray beam energies above and below elemental absorption edges, in order to invoke substantial elemental contrast in the absorption images. 25,28 For the materials in this study, tomographic imaging spanning the Fe K edge (7112 eV) and Gd L 3 edge (7243 eV) was performed by imaging at 7090, 7200, and 7280 eV, as shown in Fig. 3.…”

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confidence: 99%

Characterization of 3D interconnected microstructural network in mixed ionic and electronic conducting ceramic composites

et al. 2014

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The microstructure and connectivity of the ionic and electronic conductive phases in composite ceramic membranes are directly related to device performance. Transmission electron microscopy (TEM) including chemical mapping combined with X-ray nanotomography (XNT) have been used to characterize the composition and 3-D microstructure of a MIEC composite model system consisting of a Ce 0.8 Gd 0.2 O 2 (GDC) oxygen ion conductive phase and a CoFe 2 O 4 (CFO) electronic conductive phase. The microstructural data is discussed, including the composition and distribution of an emergent phase which takes the form of isolated and distinct regions. Performance implications are considered with regards to the design of new material systems which evolve under non-equilibrium operating conditions.

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“…Images taken above and below characteristic X-ray absorption edges can be used to determine the distribution of the corresponding elements within a sample (Grew et al, 2010). A command-line script to acquire images at multiple energies for these experiments can be easily set up using the script generator described in the previous section.…”

Section: Features Of the 2e Imaging Toolkitmentioning

confidence: 99%

“…The second, the ability to tune the energy of the incident photons with high resolution, opens the vast field of applications of X-ray absorption spectroscopic (XAS) imaging. XAS imaging applications range from dual-energy (2E) contrast imaging techniques (Yin et al, 2006;Grew et al, 2010), in which images directly below and above the absorption edge of a specific element of interest are recorded, to full-field TXM XANES imaging , in which a stack of images is recorded at different energies, generating an absorption spectrum for each pixel within the field of view. The combination of both imaging speed and energy tunability poses a challenge to data handling and processing, and requires automated instrumental control.…”

Section: Introductionmentioning

confidence: 99%

TXM-Wizard: a program for advanced data collection and evaluation in full-field transmission X-ray microscopy

et al. 2012

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Transmission X-ray microscopy (TXM) has been well recognized as a powerful tool for non-destructive investigation of the three-dimensional inner structure of a sample with spatial resolution down to a few tens of nanometers, especially when combined with synchrotron radiation sources. Recent developments of this technique have presented a need for new tools for both system control and data analysis. Here a software package developed in MATLAB for script command generation and analysis of TXM data is presented. The first toolkit, the script generator, allows automating complex experimental tasks which involve up to several thousand motor movements. The second package was designed to accomplish computationally intense tasks such as data processing of mosaic and mosaic tomography datasets; dual-energy contrast imaging, where data are recorded above and below a specific X-ray absorption edge; and TXM X-ray absorption near-edge structure imaging datasets. Furthermore, analytical and iterative tomography reconstruction algorithms were implemented. The compiled software package is freely available.

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Nondestructive Nanoscale 3D Elemental Mapping and Analysis of a Solid Oxide Fuel Cell Anode

Cited by 136 publications

References 69 publications

A comparative study of X-ray tomographic microscopy on shales at different synchrotron facilities: ALS, APS and SLS

A comparative study of X-ray tomographic microscopy on shales at different synchrotron facilities: ALS, APS and SLS

Characterization of 3D interconnected microstructural network in mixed ionic and electronic conducting ceramic composites

TXM-Wizard: a program for advanced data collection and evaluation in full-field transmission X-ray microscopy

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