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X‐ray powder diffraction studies of vitromet samples
Author(s) -
Langford J. I.
Publication year - 1971
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s002188987100654x
Subject(s) - crystallite , diffraction , materials science , x ray crystallography , spheres , deformation (meteorology) , maxima , coating , powder diffraction , optics , crystallography , composite material , chemistry , physics , metallurgy , art , astronomy , performance art , art history
Diffraction studies of samples of Vitromet, small glass spheres with a metallic coating, show that the surface deposit consists of very small crystallites (~100 Å) in which the internal stress is of the same order of magnitude as the ultimate tensile value. Using rapid methods of data collection and approximate procedures for analysing line breadths, a comparison is made between the degrees of perfection in four types of Vitromet. The usefulness and limitations of this technique are discussed. It is shown that reliable information about crystallite size and deformation can be obtained provided that several reflections over a wide range of angle can be recorded and that the broadening of diffraction maxima is not excessive.