Recent advances in surface elemental mapping via glow discharge atomic spectrometry

Gamez, Gerardo; Finch, Kevin

doi:10.1016/j.sab.2018.06.015

Cited by 15 publications

(11 citation statements)

References 43 publications

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“…However, although no substantial differences have been obtained by EPMA attending to the oxygen signal, the compositional profile by GDOES reveals a significantly higher penetration of this element in the former. The differences between both techniques evidences the high accuracy of GDOES to detect and quantify light elements [33,34], compared to EPMA.…”

Section: Discussionmentioning

confidence: 97%

Insights into the role of the layer architecture of Cr–Ti–N based coatings in long-term high temperature oxidation experiments in steam atmosphere

Mato

Sánchez-López

Barriga

et al. 2021

Ceramics International

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Knowledge on hard coatings has been applied in the energy field extending their use as protecting coatings of steam power generation plants components. The role of the layer architecture of Cr-Ti-N based coatings deposited by reactive cathodic arc evaporation on P92 steel substrates was studied with the focus on their oxidation resistance at 650 o C in 100% steam atmosphere up to 2000 h. Characterization of the coatings was performed by gravimetry, scanning electron microscopy, electron probe microanalysis, glow discharge optical emission spectroscopy, X-ray diffraction, thermodynamic simulations using the CALPHAD method, Rockwell C indentation and nanoindentation.The layered arrangement improves the oxidation resistance of TiN under the working conditions of steam power plants, as well as the mechanical properties of CrN. The produced architectures performance under the described working conditions boosts the understanding of the processes taking place at high temperature, making possible the design of optimal coatings combine the best behavior of both nitrides for each specific application, reaching a corrosion protection at high temperature in water vapor comparable to that of CrN and a hardness and Young's modulus as high as those of TiN.

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Section: Discussionmentioning

confidence: 97%

Insights into the role of the layer architecture of Cr–Ti–N based coatings in long-term high temperature oxidation experiments in steam atmosphere

Mato

Sánchez-López

Barriga

et al. 2021

Ceramics International

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“…The cell growth was determined by MTT assays [51]. Briefly, an MTT solution (5 mg/mL) was added to each well, where MG63 cells were grown for 24 h on 3 cm 2 AR or EBM surfaces in 3 mL media and were further incubated for 3 h at 37 • C. To dissolve the formazan product of the MTT, cell media was removed and 300 µL/surface of 100% anhydrous isopropanol was added.…”

Section: In Vitro Cell Culturingmentioning

confidence: 99%

Electrochemical, Tribological and Biocompatible Performance of Electron Beam Modified and Coated Ti6Al4V Alloy

Nikolova

Ormanova

Nikolova

et al. 2021

IJMS

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Vacuum cathodic arc TiN coatings with overlaying TiO2 film were deposited on polished and surface roughened by electron beam modification (EBM) Ti6Al4V alloy. The substrate microtopography consisted of long grooves formed by the liner scan of the electron beam with appropriate frequencies (500 (AR500) and 850 (AR850) Hz). EBM transformed the α + β Ti6Al4V mixed structure into a single α’-martensite phase. Тhe gradient TiN/TiO2 films deposited on mechanically polished (AR) and EBM (AR500 and AR850) alloys share the same surface chemistry and composition (almost stoichiometric TiN, anatase and rutile in different ratios) but exhibit different topographies (Sa equal to approximately 0.62, 1.73, and 1.08 μm, respectively) over areas of 50 × 50 μm. Although the nanohardness of the coatings on AR500 and AR850 alloy (approximately 10.45 and 9.02 GPa, respectively) was lower than that measured on the film deposited on AR alloy (about 13.05 GPa), the hybrid surface treatment offered improvement in critical adhesive loads, coefficient of friction, and wear-resistance of the surface. In phosphate buffer saline, all coated samples showed low corrosion potentials and passivation current densities, confirming their good corrosion protection. The coated EBM samples cultured with human osteoblast-like MG63 cells demonstrated increased cell attachment, viability, and bone mineralization activity especially for the AR500-coated alloy, compared to uncoated polished alloy. The results underline the synergetic effect between the sub-micron structure and composition of TiN/TiO2 coating and microarchitecture obtained by EBM.

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“…8–15 Leveraging the inherent GDOES advantages of direct solid sampling, simultaneous multi-elemental analysis, fast sputtering rates, multi-matrix calibration schemes, and depth profiling in the nm scale, results in ultra-high throughput elemental mapping capabilities that can be several orders-of-magnitude faster vs. typical techniques. 2,11,16…”

Section: Introductionmentioning

confidence: 99%

“…Mapping the distribution of elements in solid samples is critical for understanding the underlying mechanisms of natural and engineered materials. [1][2][3][4][5][6][7] There are several elemental mapping (EM) techniques currently available but, while they possess different advantages, a common limitation is long acquisition times, which can require several hours or more. Glow discharge optical emission spectroscopy (GDOES) has been shown to permit EM from within the sputtered area when operated in pulsed power mode and sustained under higher-than-typical pressures.…”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10][11][12][13][14][15] Leveraging the inherent GDOES advantages of direct solid sampling, simultaneous multi-elemental analysis, fast sputtering rates, multi-matrix calibration schemes, and depth proling in the nm scale, results in ultra-high throughput elemental mapping capabilities that can be several orders-ofmagnitude faster vs. typical techniques. 2,11,16 One of the aspects that enables GDOES EM is its coupling to an appropriate spectral imaging system for data collection, with several embodiments reported. On the one hand, wavelengthscan approaches, also known as staring-camera type, allow measuring monochromatic images one wavelength at a time, with the advantage of giving access to both spatial dimensions simultaneously.…”

Section: Introductionmentioning

confidence: 99%

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High-throughput single pixel spectral imaging system for glow discharge optical emission spectrometry elemental mapping enabled by compressed sensing

Gamez

She

Rivera

et al. 2022

J. Anal. At. Spectrom.

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Recent advances in surface elemental mapping via glow discharge atomic spectrometry

Cited by 15 publications

References 43 publications

Insights into the role of the layer architecture of Cr–Ti–N based coatings in long-term high temperature oxidation experiments in steam atmosphere

Insights into the role of the layer architecture of Cr–Ti–N based coatings in long-term high temperature oxidation experiments in steam atmosphere

Electrochemical, Tribological and Biocompatible Performance of Electron Beam Modified and Coated Ti6Al4V Alloy

High-throughput single pixel spectral imaging system for glow discharge optical emission spectrometry elemental mapping enabled by compressed sensing

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