Quantitative element distribution maps using energy-filtering TEM

    Project: Research project

    Description

    An Imaging Filter (Gatan) was attached to a 200 kV transmission electron microscope. This instrumentation enables the recording of parallel EEL-spectra from small specimen regions and of elemental maps at nanometer resolution. The project centred on the development of new methods, such as 1. improvement of specimen preparation by a new low-angle ion milling apparatus, 2. computer programs for image processing (correlation of elemental maps), 3. quantification of elemental maps (concentration maps).
    The Imaging Filter was successfully applied to a broad range of materials science problems, such as characterization of precipitates and grain boundaries in steels and alloys, analysis of heterogeneous ceramics, semiconductor devices, composite materials and polymers.
    StatusFinished
    Effective start/end date1/02/9330/11/95