A first HREM observation of the ordered carbon sublattice in a transition-metal carbide (VC1-x)
- 1 April 1987
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Letters
- Vol. 55 (4) , 171-179
- https://doi.org/10.1080/09500838708207552
Abstract
The microstructure of long-range-ordered vanadium carbides based on V6C5 has been analysed by means of high-resolution electron microscopy (HREM). Lattice images have been produced by including in the objective-aperture superlattice spots associated with the ordered distribution of vacancies in the interstitial carbon sublattice of these substoichiometric compounds: ‘perfectly’ ordered structures have been imaged, and a direct discussion of the experimental micrographs is made in terms of positions of the vacancy-containing columns. This HREM study will soon be extended to theinvestigation of various kinds of planar defects within differently annealed specimens.Keywords
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