Related Experiment Video
Updated: Jun 13, 2026

In Situ Detection and Single Cell Quantification of Metal Oxide Nanoparticles Using Nuclear Microprobe Analysis
Published on: February 3, 2018
Measurement of gamma' precipitates in a nickel-based superalloy using energy-filtered transmission electron
J S Tiley1, G B Viswanathan, A Shiveley
1Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH 45433, USA. jaimie.tiley@wpafb.af.mil
Abstract:
Precipitates of the ordered L1(2) gamma' phase (dispersed in the face-centered cubic or FCC gamma matrix) were imaged in Rene 88 DT, a commercial multicomponent Ni-based superalloy, using energy-filtered transmission electron microscopy (EFTEM). Imaging was performed using the Cr, Co, Ni, Ti and Al elemental L-absorption edges in the energy loss spectrum. Manual and automated segmentation procedures were utilized for identification of precipitate boundaries and measurement of precipitate sizes. The automated region growing technique for precipitate identification in images was determined to measure accurately precipitate diameters. In addition, the region growing technique provided a repeatable method for optimizing segmentation techniques for varying EFTEM conditions.
Related Concept Videos
Precipitation Gravimetry
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
Immunogold Electron Microscopy
Transmission Electron Microscopy
Washing, Drying, and Ignition of Precipitates
Preparation of Samples for Electron Microscopy

