Volume fraction measurement of dispersoids in a thin foil by parallel energy-loss spectroscopy: development and assessment of the technique
作者： G. A. BOTTON , G. L'ESPÉRANCE , C. E. GALLERNEAULT , M. D. BALL
DOI: 10.1111/J.1365-2818.1995.TB03681.X
关键词: Chemical imaging 、 Phase (waves) 、 Optics 、 Mean free path 、 Analytical chemistry 、 Linearity 、 Inelastic mean free path 、 Materials science 、 FOIL method 、 Volume fraction 、 Volume (thermodynamics)
摘要: SUMMARY A method to determine the volume fraction of a dispersoid phase based on measurements carried out thin foils is presented. The involves reconstruction shape and volume, by electron energy-loss spectroscopy thickness measurements, analysed foil determination dispersoids using more conventional microscopy imaging techniques. Hence technique does not require use stereology theorems. procedure measure total inelastic mean free path linearity its measurement for thicknesses (t) relative (t/λ) up t/λ ∼ 4 described. A allowing conversion one single experimental λ-value various collection conditions either graphically or parameterization also outlined. Various methods (CTEM, STEM chemical mapping) were evaluated their ability retrieve distribution thus volume. Artefacts sample preparation are discussed. possibility applying such techniques in-column post-column filters limitations Although system has been applied relevant metallurgical in aluminium industry, it can be used any other material provided that values obtained.
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