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Microstructural studies of fluidized‐bed β‐silicon carbide
Author(s) -
Walker D. E. Y.
Publication year - 1976
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/s0021889876011941
Subject(s) - silicon carbide , materials science , fluidized bed , planar , scanning electron microscope , carbide , phase (matter) , silicon , crystallography , composite material , metallurgy , chemistry , computer graphics (images) , organic chemistry , computer science
The fluidized‐bed vapour phase deposition of β‐SiC on nuclear fuel granules can produce polygonal crystals. The examination of these and their etch figures by scanning electron microscopy indicates an internal structure composed of {111} planar sheets. The disposition of these sheets is discussed with the aid of three‐dimensional models. It is concluded that a maximum of four sheet orientations can occur. From these, six families of sheet pairs can be made by appropriate combinations: these are labelled according to the [110] directions of the spines created by their intersections. The sheets produce traces on the external crystal faces, and the various possible juxtapositions of these traces are discussed.