Year: 1966
Type: article
Abstract: A study was performed with respect to the crystal growth and the perfection of the rod-like single crystals of zinc grown by the Bridgman technique.The substructures in the crystals were examined by optical microscopy and X-ray diffraction techinques.The preferred orientation of the growth direction of unseeded crystals of 99.9% zinc was approximately (1100), the preference of which is explained by the survival of the grain having the growth direction of (1100) at the cellular interface.The preferred orientations of 99.999% zinc crystals were the orientations parallel to the basal plane, the preference of which is explained by the growth of the grains developed from the nuclei satisfying the minimum surface free energy in the heterogeneous nucleation on the inner wall of a glass crucible.The size and shape of the cell of the impurity.substructureobserved in the low purity zinc crystals (99.9%) were related to the crystallographic orientation of the growth direction.Zinc crystals free from subboundaries of larger misorientation than 1 min. of arc were obtained by using a method devised by one of the authors (Maeda).The origin of this misoriented subboundary in zinc was also explained by his conclusion in the case of tin, namely, that mechanical stress due to adhesion between crystal and crucible had been an important factor.
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W632210404