scholarly journals Elemental Distribution Imaging by Energy-Filtering Transmission Electron Microscopy (EFTEM) and its Applications

1996 ◽  
Vol 16 (62) ◽  
pp. 168-173_1
Author(s):  
Hiroki KURATA
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Elemental Distribution ◽  
Energy Filtering ◽  
Transmission Electron

Quantitative Energy-filtering Transmission Electron Microscopy in Materials Science

2000 ◽  
Vol 6 (2) ◽  
pp. 161-172 ◽  
Author(s):  
Werner Grogger ◽  
Ferdinand Hofer ◽  
Peter Warbichler ◽  
Gerald Kothleitner
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Materials Science ◽  
Steel Specimen ◽  
Elemental Distribution ◽  
Secondary Phases ◽  
Energy Filtering ◽  
Transmission Electron ◽  
The Matrix ◽  
Titanate Ceramics

Energy-filtered transmission electron microscopy (EFTEM) can be used to acquire elemental distribution images at high lateral resolution within short acquisition times. In this article, we present an overview of typical problems from materials science which can be preferentially solved by means of EFTEM. In the first example, we show how secondary phases in a steel specimen can be easily detected by recording jump ratio images of the matrix element under rocking beam illumination. Secondly, we describe how elemental maps can be converted into concentration maps. A Ba-Nd-titanate ceramics serves as a typical materials science example exhibiting three different compounds with varying composition.

The use of an energy-filtering electron microscope to reduce chromatic aberration in images of thick biological specimens

1986 ◽  
Vol 44 ◽  
pp. 88-91
Author(s):  
L. D. Peachey ◽  
J. P. Heath ◽  
G. Lamprecht
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Electron Beam ◽  
Cross Section ◽  
Electron Scattering ◽  
Chromatic Aberration ◽  
Image Resolution ◽  
Incident Electron Energy ◽  
Energy Filtering ◽  
Transmission Electron

Biological specimens of cells and tissues generally are considerably thicker than ideal for high resolution transmission electron microscopy. Actual image resolution achieved is limited by chromatic aberration in the image forming electron lenses combined with significant energy loss in the electron beam due to inelastic scattering in the specimen. Increased accelerating voltages (HVEM, IVEM) have been used to reduce the adverse effects of chromatic aberration by decreasing the electron scattering cross-section of the elements in the specimen and by increasing the incident electron energy.

scholarly journals Development of a New Acquisition Scheme for Energy-Filtering Transmission Electron Microscopy Spectrum-Imaging toward Quantification

2011 ◽  
Vol 17 (S2) ◽  
pp. 790-791
Author(s):  
M Watanabe ◽  
F Allen
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Energy Filtering ◽  
Transmission Electron ◽  
Acquisition Scheme ◽  
Spectrum Imaging

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

scholarly journals Analysis of Metal/Plastic Interfaces by Energy-Filtering Transmission Electron Microscopy

2012 ◽  
Vol 48 (9) ◽  
pp. 322-330 ◽  
Author(s):  
Shin HORIUTI ◽  
Takeshi HANADA ◽  
Takayuki MIYAMAE ◽  
Tadae YAMANAKA ◽  
Kogoro OOSUMI ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Energy Filtering ◽  
Transmission Electron

scholarly journals Microstructure characterization of ODS-RAFM steels

2008 ◽  
Vol 1125 ◽  
Author(s):  
R. Mateus ◽  
P.A. Carvalho ◽  
D. Nunes ◽  
L.C. Alves ◽  
N. Franco ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Proton Beam ◽  
Nuclear Microprobe ◽  
Elemental Distribution ◽  
Electron Backscattered Diffraction ◽  
Ods Steel ◽  
Transmission Electron ◽  
Eurofer 97

ABSTRACTResults of the microstructural characterization of four different RAFM ODS Eurofer 97 batches are presented and discussed. Analyses and observations were performed by nuclear microprobe and scanning and transmission electron microscopy. X-ray elemental distribution maps obtained with proton beam scans showed homogeneous composition within the proton beam spatial resolution and, in particular, pointed to a uniform distribution of ODS (yttria) nanoparticles in the Eurofer 97 matrix. This was confirmed by transmission electron microscopy. Scanning electron microscopy coupled with energy dispersive spectroscopy made evident the presence of chromium carbide precipitation. Precipitates occurred preferentially along grain boundaries (GB) in three of the batches and presented a discrete distribution in the other, as a result of different thermo-mechanical routes. Additional electron backscattered diffraction experiments revealed the crystalline textures in the ferritic polycrystalline structure of the ODS steel samples.

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