Dislocations, Slip, and Fracture in BeO Single Crystals
- 1 October 1967
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 38 (11), 4248-4257
- https://doi.org/10.1063/1.1709112
Abstract
Dislocations formed during the growth and deformation of BeO single crystals were studied with x-ray and electron microscopy. The stresses for slip on the systems (0001) 〈112̄0〉, {101̄0} [0001], {101̄0} 〈112̄0〉, and {112̄2} 〈112̄3〉 are approximately 3.5×108, 1.1×109, 4.9×108, and >2.5×109 dyn/cm2, respectively, at 1000°C. Slip directions in deformed specimens were shown with x-ray microscopy. Defects in the specimens were shown to interfere with slip. Dislocation pinning and elastic interactions were observed in electron micrographs. These observations are correlated with theory.Keywords
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