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Determination of Geometrical Properties of Mechanically Delaminated Ultrathin Talc Platelets
Author(s) -
Ishimori Toshihiro,
Yamashita Mika,
Senna Mamoru
Publication year - 1994
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.19940110508
Subject(s) - crystallite , materials science , transmission electron microscopy , talc , electron microscope , diffraction , scanning electron microscope , analyser , microscopy , composite material , particle size , optics , nanotechnology , chemistry , metallurgy , physics
The three‐dimensional particle size and shape of mechanically delaminated talc thin platelets were determined by combining two different methods. The plate diameter was determined by microscopy with the aid of an image analyser and the thickness from the X‐ray crystallite size perpendicular to the basal plane. The net line broadening of the X‐ray diffraction peak, necessary for the determination of X‐ray crystallite size, was evaluated by electron microscopy. In order to correct X‐ray diffractometry for instrumental broadening, the platelet thickness of a representative specimen was obtained directly using a transmission electron microscope coupled with a laborious slice technique with an ultramicrotome.