OXYGEN DIFFUSION IN BERYLLIUM OXIDE

Technical Report · Fri Sep 15 04:00:00 EDT 1961

OSTI ID:4837142

Austerman, S B; Meyer, R A; Swarthout, D G

Polycrystalline BeO diffusion samples were prepared with a surface layer of BeO/sup 18/. The samples were annealed at 1600 to 1900 deg C to allow the O/ sup 18/ to diffuse inward. The samples were analyzed by a sectioning technique, with determination of the O/sup 18//O/sup 18/ ratio by vacuum fusion and mass spectrometric methods. The O/sup 18/ concentration profile revealed two (and possibly three) data regions, indicating a complex oxygen diffusion process in BeO. Comparison of net O/sup 18/ diffusion transport with Be transport in nearly identical samples indicates 0 to be several orders of magnitude slower, in partial qualitative agreement with recent data on sintering kinetics of BeO powder. (auth)

• Research Organization: Atomics International. Div. of North American Aviation, Inc., Canoga Park, Calif.
• DOE Contract Number: AT(11-1)-GEN-8
• NSA Number: NSA-15-029707
• OSTI ID: 4837142
• Report Number(s): NAA-SR-6427
• Country of Publication: United States
• Language: English

Related Subjects

ANNEALING
BERYLLIUM OXIDES
DIFFUSION
HIGH TEMPERATURE
LAYERS
MASS SPECTROMETERS
MELTING
METALS, CERAMICS, AND OTHER MATERIALS
OXYGEN 16
OXYGEN 18
POWDERS
QUANTITY RATIO
SAMPLING
SINTERING
SURFACES
VACUUM