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Research And Development On Advanced Graphite Materilas. Volume III: Decoration Of Dislocations And Low Angle Grain Boundaries In Graphite Single Crystals

Report Number: WADD TR 61-72 Volume III
Author: Bacon, Roger
Author: Sprague, Richard
Corporate Author: National Carbon Company
Laboratory: Directorate of Materials and Processes
Date of Publication: 1962-02
Pages: 21
Contract: AF 33(616)-6915
Project: 7350
Task: 735002
AD Number: AD0274939

Dislocations and low angle grain boundaries in single crystal graphite have been decorated by introducing into the crystal Cs, Br, aad FeCl3, which are known to form lamellar compounds with graphite. The existence of pockets or internal cracks, initiated at and bounded by tilt boundaries, has been inferred. Circular pockets of trapped gas bubbles are believed to nucleate at the sites of condensed vacancy disks.

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