Size and shape analysis of micro- to nano-particles of quartz powders using advanced electron microscopy and laser diffraction methods

POWDER TECHNOLOGY(2024)

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Abstract
The paper deals with particle analysis and the evaluation of the shape and size distribution of micro- to nanosized quartz particles as a key parameter for the evaluation of quality in many industrial fields, particularly for high-purity applications. Samples are analyzed by laser diffraction, the most commonly used method for determining the size of the particles; for precise measurement with the possibility of high-resolution imaging of particles, scanning electron microscopy was applied. For morphological and size analysis of electrically nonconductive micro- to nano-particles under environmentally compatible conditions of elevated gas pressure and humidity, environmental scanning electron microscopy was selected as the most suitable. Moreover, the highend methods of focused ion beam scanning electron microscopy and serial block-face scanning electron microscopy enabled the analysis of particles in the epoxy resin volume including spatial imaging. The application of image post -processing as an important part of the electron microscopy workflow is also discussed.
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Key words
Quartz sand nano -particles,Particle size distribution,Laser diffraction,ESEM,SBF-SEM,FIB-SEM
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