Abstract
ACCORDING to the theory of Burton, Cabrera and Frank1, crystals can only grow at supersaturations too low for two-dimensional nucleation, when dislocations are present. Where a screw dislocation terminates in a crystal face, an exposed edge is formed which, while growing, will persist and develop as a ‘growth spiral’ centred on the dislocation. This theory has been applied to the electrolytic production of titanium crystals.
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References
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STEINBERG, M. Growth Spirals originating from Screw Dislocations on Electrolytically Produced Titanium Crystals. Nature 170, 1119–1120 (1952). https://doi.org/10.1038/1701119a0
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DOI: https://doi.org/10.1038/1701119a0
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