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Comparison of the Size Distribution of Boron Powders as Measured by Malvern Diffractometer and Coulter Counter
Author(s) -
Davies J. Alwyn,
Collins Dilys L.
Publication year - 1988
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.19880050303
Subject(s) - coulter counter , materials science , diffractometer , particle size , range (aeronautics) , particle (ecology) , boron , particle size distribution , analytical chemistry (journal) , optics , composite material , chemistry , chromatography , physics , scanning electron microscope , oceanography , organic chemistry , microbiology and biotechnology , biology , geology
Aspects of measuring the particle size distribution and median diameters of fine boron powders have been investigated. It has been demonstrated that high concentrations, typically 20 w/o, of wetting agent are necessary in a predispersion stage, especially if the material has a wide range of particle size. Measurements were made with both Coulter counting and a light scattering technique from which it has been demonstrated that for particles of median diameter in the range 10–30 μm, the latter oversizes with respect to the former by as much as 30%.