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Density Measurements of Single Granules Using the Atomic Force Microscope
Author(s) -
Andersson Karin M.,
Bergström Lennart
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00419.x
Subject(s) - granule (geology) , atomic force microscopy , cantilever , materials science , dispersant , analytical chemistry (journal) , composite material , nanotechnology , chemistry , chromatography , optics , physics , dispersion (optics)
The density of single spray‐dried granules has been determined with a new method based on atomic force microscopy (AFM). Spherical granules with a well‐defined diameter are attached to the AFM cantilever, which acts as a beam‐type spring, and the mass of a granule is estimated from the shift in the resonant frequency. The error of the measurements associated with the method was estimated to vary between 1% and 5%, depending on the size and shape of the granule. Density measurements of spray‐dried WC–Co granules are presented, and the effect of a polymeric binder and dispersant on the consolidation during drying is discussed.