BERYLLIUM OXIDE AND ITS USES

Journal Article · Fri Apr 01 04:00:00 EST 1960 · Nuclear Power

OSTI ID:4174815

Elston, J

Sintered specimens of BeO were irradiated to determine the changes in the physical and mechanical properties caused by radiation below 100 deg C. These changes can be explained partially by displacement of ions, creation of faults in the crystal lattice (Wigner effect), and the formation of Be/sup 9/ gas under the action of fast neutrons from the (n,2n) and (n, alpha ) reactions. The use of beryllium oxide at high temperatures, apart from irradiation effects, is limited by the risks of volatilization in the presence of steam above 1100 deg C. In addition the mechanical characteristics sensibly worsen with temperature. It is probable that an optimum density exists for particular uses of BeO made by sintering. In that case, it is possible that bars obtained by natural sintering give better results than those produced by sintering under pressure because of their greater homogeneity. (B.O.G.)

• Research Organization: Commissariat a l'Energie Atomique, Saclay, France
• NSA Number: NSA-14-012979
• OSTI ID: 4174815
• Journal Information: Nuclear Power, Journal Name: Nuclear Power Journal Issue: 48 Vol. 5; ISSN 0546-8981; ISSN NUPOAS
• Country of Publication: United Kingdom
• Language: English

Related Subjects

BERYLLIUM 9
BERYLLIUM OXIDES
CRYSTALS
DEFECTS
DENSITY
FAST NEUTRONS
GASES
HIGH TEMPERATURE
IONS
IRRADIATION
LATTICES
MECHANICAL PROPERTIES
METALS, CERAMICS, AND MATERIALS
PRESSURE
QUANTITATIVE ANALYSIS
RADIATION EFFECTS
RODS
SINTERED MATERIALS
SINTERING
STEAM
TENSILE PROPERTIES
USES
VOLATILITY