Journal
MICROSCOPY AND MICROANALYSIS
Volume 14, Issue 6, Pages 561-570Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S1431927608080793
Keywords
atom probe tomography; 3D reconstruction; precipitates; alloys
Categories
Funding
- Office of Basic Energy Sciences
- Division of Materials Sciences
- U.S. Department of Energy [DEAC0494AL85000]
- EPSRC [EP/077664/1]
Ask authors/readers for more resources
Artifacts in the field evaporation behavior of small precipitates have limited the accuracy of atom probe tomography analysis of clusters and precipitates smaller than 2 nm. Here, we report on specific observations of reconstruction artifacts that were obtained in case of precipitates with radii less than 10 nm in Al alloys, focusing particularly on a shift that appears in the relative positioning of matrix and precipitate atoms. We show that this chemically dependent behavior, referred to as chromatic aberration, is due to the electrostatic field above the emitter and the variations in field evaporation of the elements constituting the precipitates.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available