Abstract
Bulk zinc crystals having low dislocation density ∼108/m2 and without any sub-grain boundary were produced under the conditions mentioned below. Dislocations were observed on the {11\bar20} surface using an etch pit technique.(1) Rod single crystals were grown using the Bridgman method from high purity material which was refined from 99.99% zinc using five-fold distillations and one-fold rectification.(2) Bulk crystals shaped into parallelepiped of (3∼6)×(3∼6)×(30∼60) mm3 from the above crystals were annealed for 96∼384 h (345.6∼1382.4 ks) in the thermal cycle in which the temperature was changed between 573 K and 673 K with a period of 12 h (43.2 ks).(3) The atmosphere during crystal growth and annealing was 50%Ar and 50%H2 gas which was made to pass through P2O5 after platinum asbest in 823 K.\ oindentIt was concluded that the crystal perfection was affected remarkably by fine particles of zinc oxide in the crystals, since crystals purified by distillation only had lower perfections.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Japan Institute of Metals and Materials
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
