scholarly journals Combining Experiments and Atom Probe Tomography‐Informed Simulations on γ′ Precipitation Strengthening in the Polycrystalline Ni‐Base Superalloy A718Plus

2020 ◽  
Vol 22 (9) ◽  
pp. 2000149
Author(s):  
Andreas Kirchmayer ◽  
Hao Lyu ◽  
Martin Pröbstle ◽  
Frédéric Houllé ◽  
Andreas Förner ◽  
...  
Keyword(s):  
Atom Probe Tomography ◽  
Atom Probe ◽  
Precipitation Strengthening ◽  
Base Superalloy

APT Investigation of Effect of Minor Zr on Precipitation Strength of Al-Sc Alloy

2016 ◽  
Vol 877 ◽  
pp. 245-250 ◽  
Author(s):  
Na Xue ◽  
Hui Song ◽  
Chang Bing Zhou ◽  
Xiao Jiao Wang ◽  
Wen Qing Liu
Keyword(s):  
Aging Time ◽  
Atom Probe Tomography ◽  
Diffusion Rate ◽  
Atom Probe ◽  
Precipitation Strengthening ◽  
Number Density ◽  
Zr Addition ◽  
Zr Alloy ◽  
Zr Alloys

As-cast Al-Sc alloys and Zr-containing Al-Sc-Zr alloys were aged at 300°C for different times, the Al-Sc-Zr alloy showed more excellent precipitation strengthening. The atom probe tomography (APT) was applied to characterize the precipitates in the two alloys, the results show that the precipitates in Al-Sc-Zr alloy is smaller in size and is higher in number density than that in the Al-Sc alloy at same aging time, it is because that the Zr addition reduces the diffusion rate of Sc, and which retains the growth of precipitates and results in the excellent precipitation strengthening of Al-Sc-Zr alloy.

scholarly journals A Correlative Study of an Iron-Base Superalloy Using Transmission Electron Microscopy and Atom Probe Tomography

2006 ◽  
Vol 12 (S02) ◽  
pp. 1748-1749 ◽  
Author(s):  
D Larson ◽  
T Prosa ◽  
S Kostrna ◽  
A Moe ◽  
T Kelly ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Atom Probe Tomography ◽  
Atom Probe ◽  
Iron Base ◽  
Correlative Study ◽  
Transmission Electron ◽  
Base Superalloy

Extended abstract of a paper presented at Microscopy and Microanalysis 2006 in Chicago, Illinois, USA, July 30 – August 3, 2005

scholarly journals Correlating nanoscale secondary ion mass spectrometry and atom probe tomography analysis of uranium enrichment in metallic nuclear fuel

The Analyst ◽  
2021 ◽  
Vol 146 (1) ◽  
pp. 69-74
Author(s):  
Elizabeth Kautz ◽  
John Cliff ◽  
Timothy Lach ◽  
Dallas Reilly ◽  
Arun Devaraj
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Fuel ◽  
Atom Probe Tomography ◽  
Secondary Ion Mass Spectrometry ◽  
Atom Probe ◽  
Uranium Enrichment ◽  
Length Scales ◽  
Atom Probe Tomography Analysis ◽  
Secondary Ion ◽  
Tomography Analysis

235U enrichment in a metallic nuclear fuel was measured via NanoSIMS and APT, allowing for a direct comparison of enrichment across length scales and resolutions.

scholarly journals Inside Front Cover: Atom Probe Tomography of Encapsulated Hydroxyapatite Nanoparticles (Small Methods 2/2021)

Small Methods ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 2170004
Author(s):  
Daniel S. Mosiman ◽  
Yi‐Sheng Chen ◽  
Limei Yang ◽  
Brian Hawkett ◽  
Simon P. Ringer ◽  
...  
Keyword(s):  
Atom Probe Tomography ◽  
Atom Probe ◽  
Hydroxyapatite Nanoparticles ◽  
Front Cover

scholarly journals The distribution of O and N in the surface region of laser-patterned titanium revealed by atom probe tomography

2021 ◽  
pp. 150193
Author(s):  
D. Kuczyńska-Zemła ◽  
G. Sundell ◽  
M. Zemła ◽  
M. Andersson ◽  
H. Garbacz
Keyword(s):  
Atom Probe Tomography ◽  
Surface Region ◽  
Atom Probe

scholarly journals 3D sub-nanometer analysis of glucose in an aqueous solution by cryo-atom probe tomography

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
T. M. Schwarz ◽  
C. A. Dietrich ◽  
J. Ott ◽  
E. M. Weikum ◽  
R. Lawitzki ◽  
...  
Keyword(s):  
Atom Probe Tomography ◽  
Density Functional ◽  
Chemical Characterization ◽  
Analytical Techniques ◽  
Atom Probe ◽  
Characterization Methods ◽  
Signal Deconvolution ◽  
The Stability ◽  
Frozen Solutions ◽  
3D Volume

AbstractAtom Probe Tomography (APT) is currently a well-established technique to analyse the composition of solid materials including metals, semiconductors and ceramics with up to near-atomic resolution. Using an aqueous glucose solution, we now extended the technique to frozen solutions. While the mass signals of the common glucose fragments CxHy and CxOyHz overlap with (H2O)nH from water, we achieved stoichiometrically correct values via signal deconvolution. Density functional theory (DFT) calculations were performed to investigate the stability of the detected pyranose fragments. This paper demonstrates APT’s capabilities to achieve sub-nanometre resolution in tracing whole glucose molecules in a frozen solution by using cryogenic workflows. We use a solution of defined concentration to investigate the chemical resolution capabilities as a step toward the measurement of biological molecules. Due to the evaporation of nearly intact glucose molecules, their position within the measured 3D volume of the solution can be determined with sub-nanometre resolution. Our analyses take analytical techniques to a new level, since chemical characterization methods for cryogenically-frozen solutions or biological materials are limited.

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