Surface energy of zinc

Journal Article · Fri Apr 01 00:00:00 EST 1983 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.332817· OSTI ID:5617410

Bilello, J C; Dew-Hughes, D; Pucino, A T

The influence of temperature and associated dislocation microstructure on the energetics of basal plane cleavage in zinc crystals has been investigated using the method of Hull, Beardmore, and Valentine (HBV). A marked temperature dependence was observed in the zinc surface energy, over the range 77--298 /sup 0/K, contrary to previous expectations. Plastic relaxation was associated with crack initiation at 77 /sup 0/K, but not propagation; while at room temperature a plastic zone of 1200--1500 ..mu..m in depth was produced by crack extension. The surface energy could be estimated, independent of the usual Griffith analysis, by measuring the energy dissipation in a fully relaxed deformed zone associated with an explosively formed precursor crack. This method yielded surface energies of 0.066 to 0.079 J m/sup -2/ which was in good agreement with previous work. It is demonstrated that the cleavage surface energy of zinc is well below the thermodynamic surface energy and that this discrepancy is not related to plastic deformation.

• Research Organization: Department of Materials Science and Engineering, State University of New York, Stony Brook, New York 11794
• OSTI ID: 5617410
• Journal Information: J. Appl. Phys.; (United States), Vol. 54:4
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ZINC
SURFACE ENERGY
CLEAVAGE
CRACKS
CRYSTALS
DEFORMATION
DISLOCATIONS
ENERGY LOSSES
EXPLOSIONS
LOW TEMPERATURE
MEDIUM TEMPERATURE
MICROSTRUCTURE
PLASTICITY
RELAXATION
TEMPERATURE DEPENDENCE
THICKNESS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DIMENSIONS
ELEMENTS
ENERGY
FREE ENERGY
LINE DEFECTS
LOSSES
MECHANICAL PROPERTIES
METALS
PHYSICAL PROPERTIES
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES
360104* - Metals & Alloys- Physical Properties